ISDN commands -- display isdn active-channel

Use display isdn active-channel to display information about successful calls on ISDN interfaces.

Syntax

display isdn active-channel [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Specifies an ISDN BRI or PRI interface by its type and number. If you do not specify an interface, the command displays information about successful calls for all ISDN interfaces.

Examples

# Display information about successful Q.931 calls on BRI 2/4/0.

<Sysname> display isdn active-channel interface bri 2/4/0

Bri 2/4/0

Channel Info: B1

Call Property: Analog

Call Type: Out

Calling Number: 1111

Calling Subaddress:

Called Number: 2222

Called Subaddress:

Start Time: 13-03-14 15:22:26

Time Used: 00:01:10

# Display information about successful Q.931 calls on PRI interface Serial 2/3/0:15.

<Sysname> display isdn active-channel interface serial 2/3/0:15

Serial2/3/0:15

Serial2/3/0:15

Channel Info: B2

Call Property: Digital

Call Type: Out

Calling Number: 8306001

Calling Subaddress:

Called Number: 8306002

Called Subaddress:

Start Time: 13-02-14 12:22:26

Time Used: 00:11:20

Table 1 Command output

Field | Description
Channel Info | B-channel for the call.
Call Property | Call property: Digital or Analog.
Call Type | Call type: · In—Incoming call. · Out—Outgoing call. In ISDN, In and Out describe a call as viewed by the user side of the interface.
Start Time | Time when the call was established.
Time Used | Duration of the connection since the call was established.

ISDN commands -- display isdn call-info

Use display isdn call-info to display information about calls on ISDN interfaces.

Syntax

display isdn call-info [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Specifies an ISDN BRI or PRI interface by its type and number. If you do not specify an interface, the command displays call information for all ISDN interfaces.

Usage guidelines

The command displays information about each ISDN layer, including Q.921, Q.931, and CC. When a call setup fails, you can use the command to identify the layer that caused the failure.

Examples

# Display call information for BRI 2/4/0.

<Sysname> display isdn call-info interface bri 2/4/0

Bri2/4/0(User-side): ACTIVE

Link Layer 1: TEI = 65, State = MULTIPLE_FRAME_ESTABLISHED

Link Layer 2: TEI = NONE, State = TEI_UNASSIGNED

Link Layer 3: TEI = NONE, State = TEI_UNASSIGNED

Link Layer 4: TEI = NONE, State = TEI_UNASSIGNED

Link Layer 5: TEI = NONE, State = TEI_UNASSIGNED

Link Layer 6: TEI = NONE, State = TEI_UNASSIGNED

Link Layer 7: TEI = NONE, State = TEI_UNASSIGNED

Link Layer 8: TEI = NONE, State = TEI_UNASSIGNED

Network Layer: 1 connections

Connection 1:

CallID: 0x0001, State: ACTIVE, CES: 1, Channel: 0x00000001

TEI: 65

Calling_Num[:Sub]: 2014:1325

Called_Num[:Sub]: 50401:24136

# Display call information for PRI interface Serial 2/3/0:15.

<Sysname> display isdn call-info interface serial 2/3/0:15

Serial2/3/0:15(User-side):

Link Layer 1: TEI = 0, State = MULTIPLE_FRAME_ESTABLISHED

Network Layer: 1 connections

Connection 1:

CallID: 0x0000ffff, State: ACTIVE, CES: 1, Channel: 0x00200000

TEI: 0

Calling_Num[:Sub]: 8306001

Called_Num[:Sub]: 8305001

Table 2 Command output

Field | Description
Bri2/4/0(User-side): ACTIVE | Physical layer activation state of the interface: · ACTIVE—The physical layer is active. · DEACTIVE—The physical layer is inactive. The command displays the physical layer activation state only for BRI interfaces. The physical layer of a BRI interface is activated only when it receives an activation request from Q.931. However, the physical layer of a PRI interface does not require an activation request. It becomes active when the physical link comes up. The ISDN role of the interface is bracketed.
Link Layer | Data link connections on the ISDN interface. ISDN establishes a connection for each terminal and uses a TEI to identify each connection. A BRI interface can have eight connections, but a PRI interface can have only one connection.
TEI | Terminal endpoint identifier that identifies an end-user terminal such as an ISDN phone. TEIs are assigned by the network side.
State | Data link layer state: · TEI_UNASSIGNED—No TEI is assigned to the data link connection. · ASSIGN_AWAITING_TEI—The data link layer is waiting for TEI assignment. · ESTABLISH_AWAITING_TEI—The data link layer is waiting for TEI assignment and multiple-frame establishment. · TEI_ASSIGNED—A TEI has been assigned to the data link connection. · AWAITING_ESTABLISHMENT—The data link layer is waiting for multiple-frame establishment. · MULTIPLE_FRAME_ESTABLISHED—The multiple-frame operation is successful. The Send Sequence Number and the Receive Sequence Number for Q.921 frames are synchronized. · TIMER_RECOVER—On timer expiration, the data link layer is attempting to recover the link. · AWAITING_RELEASE—The data link layer is waiting for the multiple-frame operation to be released. · TEI_ASSIGNED_EXT1—The data link layer receives a deactivation instruction from the physical layer when the data link connection is present. · TEI_ASSIGNED_EXT2—The data link layer receives a multiple-frame operation request for a new call.
Network Layer: 1 connections | A Q.931 network layer connection is present on the interface.
CallID | Index of the call at the CC layer.
State | Layer 3 call control state: · NULL—Initial state. No call exists. · CALL_INITIATED—The user has initiated a call establishment, but the network has not answered yet. · OVERLAP_SENDING—Q.931 sends called number information in overlap mode. In this mode, called number information can be absent or incomplete in the outgoing SETUP messages. · OUTGOING_CALL_PROCEEDING—The user has sent all information required for call establishment. This state is available for outgoing calls. · CALL_DELIVERED—The network side has initiated remote user alerting, but it has not answered the call yet. This state is available for outgoing calls. · CALL_PRESENT—The user has received a call establishment request from the network, but it has not responded yet. This state is available for incoming calls. · CALL_RECEIVED—The user has indicated alerting for a call, but it has not answered the call yet. This state is available for incoming calls. · CONNECT_REQUEST—The user has answered the call, but the network has not awarded the call yet. This state is available for incoming calls. · INCOMING_CALL_PROCEEDING—The user has received all information necessary for call setup. This state is available for incoming calls. · ACTIVE—For an incoming call, this state indicates that the network has awarded the call. For an outgoing call, this state indicates that the remote user has answered the call. · DISCONNECT_REQUEST—The user has requested the network to clear the end-to-end connection. · DISCONNECT_INDICATION—The user received an instruction to disconnect the call because the network has disconnected the end-to-end connection. · SUSPEND_REQUEST—The user has requested the network to suspend the call. · RESUME_REQUEST—The user has requested the network to resume the suspended call. · RELEASE_REQUEST—The user has requested the network to release the call. · OVERLAP_RECEIVING—Q.931 receives called-number information in overlap mode.
CES | Connection endpoint suffix used between Q.931 and Q.921 to identify a call connection.
Channel | Bitmap of the ISDN B-channel for the call. Each bit in the bitmap represents a B channel. If a bit is set to 1, the B channel is used.
Calling_Num[:Sub] | Calling number and calling subaddress.
Called_Num[:Sub] | Called number and called subaddress.

ISDN commands -- display isdn call-record

Use display isdn call-record to display the history records for ISDN calls.

Syntax

display isdn call-record [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Specifies an ISDN BRI or PRI interface by its type and number. If you do not specify an interface, the command displays call history records for all ISDN interfaces.

Usage guidelines

The command displays the most recent 100 history records for successful ISDN calls.

Examples

# Display ISDN call history records.

<Sysname> display isdn call-record

Type Caller Called Start time End time Duration(s)

Out - 232303 13-03-20 14:10:12 - 273

In - 262609 13-03-20 14:04:50 13-03-20 14:08:54 244

Out - 232303 13-03-20 14:00:47 13-03-20 14:04:07 200

In 232303 262609 13-03-20 13:48:15 13-03-20 13:49:06 51

Out 262609 232303 13-03-20 13:46:39 13-03-20 13:47:31 52

Table 3 Command output

Field | Description
Type | Call type: · In—Incoming call. · Out—Outgoing call. In ISDN, In and Out describe a call as viewed by the user side of the interface.
Caller | Calling number.
Called | Called number.
Start time | Time when the call was established.
End time | Time when the call was terminated.
Duration | Duration (in seconds) of the connection since the call was established.

ISDN commands -- display isdn parameters

Use display isdn parameters to display ISDN Layer 2 and Layer 3 parameters.

Syntax

display isdn parameters { protocol | interface interface-type interface-number }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

protocol: Specifies an ISDN protocol. Available options include 5ess, ansi, at&t, dss1, etsi, ni, ni2, ntt, and qsig. If you specify a protocol, the command displays the default parameters for the protocol.

interface interface-type interface-number: Specifies an ISDN BRI or PRI interface by its type and number. If you specify an interface, the command displays the ISDN Layer 2 and Layer 3 parameters for the specified interface.

Examples

# Display the default DSS1 parameters.

<Sysname> display isdn parameters dss1

DSS1 ISDN Layer 2 system parameters:

T200(sec) T201(sec) T202(sec) T203(sec) N200 K(BRI) K(PRI)

1 1 2 10 3 1 7

DSS1 ISDN Layer 3 system timers(default values):

Timer Value(sec)

T301 240

T302 15

T303 4

T304 30

T305 30

T308 4

T309 90

T310 40

T313 4

T322 4

# Display the ISDN parameters for PRI interface Serial 2/3/0:15.

<Sysname> display isdn parameters interface serial 2/3/0:15

Serial2/3/0:15(Network-side):

QSIG ISDN Layer 2 system parameters:

T200(sec) T201(sec) T202(sec) T203(sec) N200 K(PRI)

1 1 2 10 3 7

QSIG ISDN Layer 3 system timers:

Timer Value(sec)

T301 35

T302 37

T303 8

T304 50

T305 20

T308 3

T309 130

T310 130

T313 6

T322 8

Table 4 Command output

Field | Description
T200(sec) | Q.921 T200 timer sets the retransmission interval (in seconds).
T201(sec) | Q.921 T201 timer sets the minimum interval (in seconds) between the retransmissions of a TEI Identity check message.
T202(sec) | Q.921 T202 timer sets the minimum interval (in seconds) between transmissions of TEI Identity request messages.
T203(sec) | Q.921 T203 timer sets the maximum amount of time that the data link can be idle.
N200 | Q.921 N200 counter sets the maximum number of retransmissions.
K(BRI) | Maximum number of unacknowledged frames (sliding window size) on the ISDN BRI interface.
K(PRI) | Maximum number of unacknowledged frames (sliding window size) on the ISDN PRI interface.

ISDN commands -- display isdn spid

Use display isdn spid to display SPID information for NI-enabled BRI interfaces.

Syntax

display isdn spid [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface interface-type interface-number: Specifies a BRI interface that runs the NI protocol. If you do not specify an interface, the command displays SPID information for all NI-enabled BRI interfaces.

Examples

# Display SPID information for NI-enabled interface BRI 2/4/0 (the SPID type is AUTO).

<Sysname> display isdn spid interface bri 2/4/0

Interface Bri2/4/0:

SPID Type: AUTO

SPID B1:

SPID Num: 235

Neg State: SPID_UNASSIGNED

Init State: INIT_NULL

SPID B2:

SPID Num: 326

Neg State: SPID_UNASSIGNED

Init State: INIT_NULL

SPID timer: 30 seconds

SPID resend: 1 times

# Display SPID information for NI-enabled interface BRI 2/4/0 (the SPID type is STATIC).

<Sysname> display isdn spid interface bri 2/4/0

Interface Bri2/4/0:

SPID Type: STATIC

SPID B1:

SPID Num: 134

LDN: 3251

Init State: INIT_NULL

SPID B2:

SPID Num: 257

LDN: 3657

Init State: INIT_NULL

SPID timer: 30 seconds

SPID resend: 1 times

# Display SPID information on NI-enabled interface BRI 2/4/0 (the SPID type is NIT).

<Sysname> display isdn spid interface bri 2/4/0

Interface Bri2/4/0:

SPID Type: NIT

Table 5 Command output

Field | Description
SPID Type | SPID assignment type: · NIT—Not initial terminal mode. You must enable NIT mode on the BRI interface if the NI-type service provider switch does not support SPID negotiation. · STATIC—Static SPID assignment. You must manually configure the SPIDs assigned by the service provider on the BRI interface. · AUTO—Dynamic SPID assignment. The interface obtains SPIDs dynamically from the service provider switch.
SPID B1 | SPID information for the B1 channel on the BRI interface.
SPID B2 | SPID information for the B2 channel on the BRI interface.
SPID Num | SPID value. It is manually configured or dynamically obtained from the service provider, depending on the SPID assignment type.
LDN | Local dialing number. You must configure an LDN depending on the service provider requirement.
Neg State | SPID negotiation state: · SPID_UNASSIGNED—The SPID is not assigned, or the SPID assignment has failed. · ASSIGN_AWAITING_SPID—The user terminal has initiated an auto-SPID request and is waiting for SPID assignment. · SPID_ASSIGNED—The user terminal has selected one SPID from the SPID options provided by the network. · ASSIGN_AWAITING_CALL_CLEAR—The B-channel transits to this state if a call is present when it receives an Auto-SPID request.
Init State | Layer 3 initialization state for the SPID: · INIT_NULL—No Layer 3 initialization has occurred. · INIT_IND—The service provider switch starts Layer 3 initialization. · INIT_PROCEEDING—Layer 3 is initializing. · INIT_END—Layer 3 initialization is finished successfully. · INIT_AWAITING_CALL_CLEAR—The B-channel transits to this state if a call is present when Q.931 receives a Layer 3 initialization request.
SPID timer | TSPID timer. This timer sets the maximum interval that ISDN waits for a response after it sends an INFORMATION message. To configure this timer, use the isdn spid timer command.
SPID resend | Maximum number of INFORMATION retransmissions. To configure this counter, use the isdn spid resend command.

ISDN commands -- isdn bch-local-manage

Use isdn bch-local-manage to enable an ISDN interface to select ISDN B-channels for calls.

Use undo isdn bch-local-manage to restore the default.

Syntax

isdn bch-local-manage [ exclusive ]

undo isdn bch-local-manage

Default

B-channel selection is disabled on ISDN interfaces. The service provider switch selects B-channels for calls.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

exclusive: Specifies exclusive B-channel selection. If you do not specify this keyword, the command enables non-exclusive B-channel selection.

Usage guidelines

Typically, B-channel selection is done by the service provider switch. To improve call establishment efficiency and reduce call losses on ISDN lines, you can enable the ISDN interface to select B-channels for calls. This is particularly true for PRI ISDN lines.

· If non-exclusive B-channel selection is enabled, the interface selects a preferred B-channel for a call. However, it will use the B-channel selected by the peer end when a selection conflict occurs.

· If exclusive B-channel selection is enabled, the interface selects a preferred B-channel for a call. It does not accept the B-channel selected by the peer end when a selection conflict occurs.

| IMPORTANT: Configure exclusive B-channel selection only when the interface is in network mode. In user mode, exclusive B-channel selection will cause a call establishment failure when a B-channel selection conflict occurs.

Examples

# Enable non-exclusive B-channel selection on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn bch-local-manage

ISDN commands -- isdn bch-select-way

Use isdn bch-select-way to set a B-channel selection method.

Use undo isdn bch-select-way to restore the default.

Syntax

isdn bch-select-way { ascending | descending }

undo isdn bch-select-way

Default

The device selects B channels in ascending order of channel IDs.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ascending: Selects ISDN B channels in ascending order of channel IDs.

descending: Selects ISDN B channels in descending order of channel IDs.

Usage guidelines

If the interface is operating in user mode, this command takes effect only when the isdn bch-local-manage command is configured.

Examples

# Set the B channel selection method to descending order on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn bch-select-way descending

Related commands

isdn bch-local-manage

ISDN commands -- isdn bri-slipwnd-size

Use isdn bri-slipwnd-size to set the sliding window size on an ISDN BRI interface.

Use undo isdn bri-slipwnd-size to restore the default.

Syntax

isdn bri-slipwnd-size window-size

undo isdn bri-slipwnd-size

Default

The sliding window size is 1 on an ISDN BRI interface.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

window-size: Specifies a sliding window size in the range of 1 to 7.

Usage guidelines

Q.921 sends frames in order of their sequence numbers and requires an acknowledgment of each transmitted frame. The sliding window mechanism enables Q.921 to send multiple continuous frames without waiting for the acknowledgment of the previous frame. The sliding window size sets the maximum number of unacknowledged frames. You can tune the size depending on the link status to maximize the throughput.

When sending a frame, Q.921 checks the number of unacknowledged frames. Suppose V(A) is the sequence number of the previous acknowledged frame, V(S) is the sequence number of the frame to be sent, and k is the sliding window size. If V(A) + k = V(S), the system stops sending frames.

Examples

# Set the sliding window size to 7 on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn bri-slipwnd-size 7

Related commands

isdn pri-slipwnd-size

ISDN commands -- isdn caller-number

Use isdn caller-number to configure calling number verification for incoming calls.

Use undo isdn caller-number to restore the default.

Syntax

isdn caller-number caller-number

undo isdn caller-number

Default

An ISDN interface accepts calls from any calling numbers.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

caller-number: Specifies an acceptable calling number, a case-insensitive string of 1 to 24 characters.

Usage guidelines

Calling number verification enables an ISDN interface to accept calls only from a specific calling party.

Call setup will fail in the following situations:

· The calling number in the incoming SETUP message is not configured on the ISDN interface.

· The incoming SETUP message does not include a calling number.

Examples

# Configure BRI 2/4/0 to accept incoming calls only from the calling number 400.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn caller-number 400

Related commands

isdn calling

ISDN commands -- isdn calling

Use isdn calling to configure ISDN calling number identification.

Use undo isdn calling to restore the default.

Syntax

isdn calling calling-number

undo isdn calling

Default

ISDN interfaces do not send a calling number in outgoing SETUP messages for any services except voice services.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

calling-number: Specifies a calling number, a case-insensitive string of 1 to 24 characters.

Usage guidelines

ISDN calling number identification enables an ISDN interface to include the call number of a calling party in the outgoing call SETUP messages. The calling number information can be used for different purposes. For example, the service provider can use this information to identify the pricing scheme for the calling party. The called party can use this information to verify the origin of calls.

For the called party to receive the calling number, the connected service provider switch must support transmitting calling numbers.

As a best practice, do not configure the calling number to be sent for voice services.

Examples

# Configure BRI 2/4/0 to include 8060170 as the calling number in outgoing SETUP messages.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn calling 8060170

Related commands

display isdn call-info

isdn caller-number

ISDN commands -- isdn carry calling-name

Use isdn carry calling-name to configure ISDN to include the calling-name field in outgoing packets on an ISDN interface.

Use undo isdn carry calling-name to restore the default.

Syntax

isdn carry calling-name

undo isdn carry calling-name

Default

ISDN does not include the calling-name field in outgoing packets on an ISDN interface.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The command enables a called party to identify the name of a calling party attached to the interface.

You can execute the command only when no call is present on the ISDN interface.

Examples

# Configure ISDN to include the calling-name field in outgoing packets on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn carry calling-name

Related commands

isdn carry connected-name

ISDN commands -- isdn carry connected-name

Use isdn carry connected-name to configure ISDN to include the connected-name field in outgoing packets on an ISDN interface.

Use undo isdn carry connected-name to restore the default.

Syntax

isdn carry connected-name

undo isdn carry connected-name

Default

ISDN does not include the connected-name field in outgoing packets.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The command enables a calling party to identify the name of a called party attached to the interface.

You can execute the command only when no call is present on the ISDN interface.

Examples

# Configure ISDN to include the connected-name field in outgoing packets on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn carry connected-name

Related commands

isdn carry calling-name

ISDN commands -- isdn check-called-number

Use isdn check-called-number to configure called-number verification for incoming calls on an ISDN interface.

Use undo isdn check-called-number to remove an acceptable called number.

Syntax

isdn check-called-number check-index called-party-number

undo isdn check-called-numbe r check-index

Default

ISDN does not check the called number or subaddress in incoming SETUP messages.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

check-index: Specifies a called-number verification index in the range of 1 to 3.

called-party-number: Specifies an acceptable called number. You can include a colon-separated subaddress when you specify the called number, for example, 66668888:13525. The value must be a case-sensitive string of 1 to 40 characters.

Usage guidelines

Called-number verification enables an ISDN interface to accept only calls placed to specific called numbers. You can configure the ISDN interface to verify only the called number or both the called number and the called subaddress. The ISDN interface will accept a call only if the called-number information matches one entry in the list of acceptable called numbers.

Examples

# Add 66668888:13525 to the list of acceptable called-numbers on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn check-called-number 1 66668888:13525

ISDN commands -- isdn crlength

Use isdn crlength to set the length of the call reference for calls placed on an ISDN interface.

Use undo isdn crlength to restore the default.

Syntax

isdn crlength call-reference-length

undo isdn crlength

Default

The call reference length is 2 bytes for CE1/PRI and CT1/PRI interfaces and 1 byte for BRI interfaces.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

call-reference-length: Specifies an ISDN call reference length, in bytes. Available values include 1 and 2.

Usage guidelines

Call reference is a sequence number that identifies a call. A call reference can be reused after it is released when its associated call is released.

When the router is connected to a peer device that cannot recognize the call reference length, you must configure the router with the same call reference length as the peer device.

You can configure the command only when no calls are present on the ISDN interface.

Examples

# Set the call reference length to 1 byte on PRI interface Serial 2/3/0:15.

<Sysname> system-view

[Sysname] interface serial 2/3/0:15

[Sysname-Serial2/3/0:15] isdn crlength 1

ISDN commands -- isdn ignore connect-ack

Use isdn ignore connect-ack to enable ISDN to enter the ACTIVE state without an acknowledgment after it sends or receives a CONNECT request.

Use undo isdn ignore connect-ack to disable ISDN from entering the ACTIVE state without an acknowledgment after it sends or receives a CONNECT request.

Syntax

isdn ignore connect-ack [ incoming | outgoing ]

undo isdn ignore connect-ack [ incoming | outgoing ]

Default

After sending a CONNECT request, ISDN waits for a CONNECT ACK before it changes to the ACTIVE state for traffic transmission.

After receiving a CONNECT request, ISDN sends a CONNECT ACK and changes to the ACTIVE state.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

incoming: Specifies the incoming CONNECT ACK.

outgoing: Specifies the outgoing CONNECT ACK.

Usage guidelines

The setting for the command must be consistent with the setting on the service provider switch.

· If the service provider switch does not send CONNECT ACK, configure the isdn ignore connect-ack incoming command. After sending a CONNECT message, ISDN changes to the ACTIVE state without waiting for an acknowledgment.

· If the service provider switch does not receive CONNECT ACK, configure the isdn ignore connect-ack outgoing command. After receiving a CONNECT message, ISDN changes to the ACTIVE state without sending an acknowledgment.

You can configure the command only when no calls are present on the ISDN interface.

Examples

# On BRI 2/4/0, enable ISDN to change to the ACTIVE state after it sends a CONNECT request without waiting for a CONNECT ACK.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn ignore connect-ack incoming

# On BRI 2/4/0, enable ISDN to change to the ACTIVE state after it receives a CONNECT request without sending a CONNECT ACK.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn ignore connect-ack outgoing

ISDN commands -- isdn ignore hlc

Use isdn ignore hlc to exclude the HLC information element from the outgoing SETUP message.

Use undo isdn ignore hlc to restore the default.

Syntax

isdn ignore hlc

undo isdn ignore hlc

Default

All ISDN protocols except 5ESS and QSIG include the HLC information element in the SETUP message.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The high layer compatibility (HLC) element provides high layer compatibility check information for the called party. The called party will reject the call setup request if it detects an incompatibility.

For a successful call setup, make sure the ISDN interface uses the same HLC setting as the service provider switch.

You can execute the command only when no call is present on the ISDN interface.

Examples

# Exclude the HLC information element from the outgoing SETUP message on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn ignore hlc

ISDN commands -- isdn ignore llc

Use isdn ignore llc to exclude the LLC information element from the outgoing SETUP message.

Use undo isdn ignore llc to restore the default.

Syntax

isdn ignore llc

undo isdn ignore llc

Default

All ISDN protocols except 5ESS and QSIG include the LLC information element in the SETUP message.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The lower layer compatibility (LLC) element provides low layer compatibility check information for the called party. The called party will reject the call setup request if it detects an incompatibility.

For a successful call setup, make sure the ISDN interface uses the same LLC setting as the service provider switch.

You can execute the command only when no call is present on the ISDN interface.

Examples

# Exclude the LLC information element from the outgoing SETUP message on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn ignore llc

ISDN commands -- isdn ignore sending-complete

Use isdn ignore sending-complete to exclude or ignore the sending complete indication for call setup.

Use undo isdn ignore sending-complete to restore the default.

Syntax

isdn ignore sending-complete [ incoming | outgoing ]

undo isdn ignore sending-complete [ incoming | outgoing ]

Default

The device checks incoming SETUP messages for the sending complete indication.

The device includes a sending complete indication in outgoing SETUP messages.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

incoming: Ignores the sending complete indication in the incoming SETUP message.

outgoing: Excludes the sending complete indication from the outgoing SETUP message.

Usage guidelines

A sending complete indication in the SETUP message indicates the completion of information sending or receiving.

If you do not specify a call direction, the command takes effect on both incoming and outgoing ISDN calls.

The command takes effect only when the ISDN protocol is DSS1, QSIG, or ETSI. For a successful call setup, you must use the same sending complete indication setting as the service provider switch.

You can execute the command only when no call is present on the ISDN interface.

Examples

# Ignore the sending complete indication in the incoming SETUP message on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn ignore sending-complete incoming

# Exclude the sending complete indication in the outgoing SETUP message on BRI 2/4/0.

[Sysname-Bri2/4/0] isdn ignore sending-complete outgoing

Related commands

isdn protocol-type

ISDN commands -- isdn l3-timer

Use isdn l3-timer to set an ISDN L3 timer.

Use undo isdn l3-timer to restore the default.

Syntax

isdn l3-timer timer-name time-interval

undo isdn l3-timer { timer-name | all }

Default

Table 6 lists the default L3 timer settings for DSS1. For the default L3 timer values for other ISDN protocols, use the display isdn parameters command.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

timer-name: Specifies an ISDN L3 timer name.

time-interval: Specifies a timer value.

all: Restores the default values of all ISDN L3 timers.

Table 6 DSS1 ISDN L3 timers

Keyword for the timer-name argument | Timer name | Value range (in seconds) | Default (in seconds)
t301 | T301 | 30 to 1200 | 240
t302 | T302 | 1 to 60 | 15
t303 | T303 | 2 to 10 | 4
t304 | T304 | 10 to 60 | 30
t305 | T305 | 4 to 30 | 30
t308 | T308 | 2 to 10 | 4
t309 | T309 | 1 to 240 | 90
t310 | T310 | 10 to 240 | 40
t313 | T313 | 2 to 10 | 4
t322 | T322 | 2 to 10 | 4

Usage guidelines

T302 and T304 are timers for overlap sending. They are not available in overlap sending-incapable ISDN protocols, including AT&T, NTT, NI2, and 5ESS.

Examples

# Set the T301 timer to 160 seconds on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn l3-timer t301 160

Related commands

display isdn parameters

isdn overlap-sending

ISDN commands -- isdn link-mode p2p

Use isdn link-mode p2p to configure a BRI interface to operate in point-to-point mode.

Use undo isdn link-mode to restore the default.

Syntax

isdn link-mode p2p

undo isdn link-mode

Default

A BRI interface operates in point-to-multipoint mode.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The data link type of an ISDN BRI interface can be one of the following:

· point-to-point—The BRI interface can be connected only to one terminal device.

· point-to-multipoint—The BRI interface can be connected to multiple terminal devices.

Set the data link type of an ISDN BRI interface to be the same as its connected service provider switch.

If the isdn two-tei command is configured, the data link of the BRI interface must be point-to-multipoint.

You cannot change an ISDN BRI interface's data link type when a call is present.

Examples

# Configure BRI 2/4/0 to operate in point-to-point mode.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn link-mode p2p

Related commands

isdn two-tei

ISDN commands -- isdn number-property

Use isdn number-property to set the number type and numbering plan identification for calling or called numbers in incoming or outgoing ISDN calls.

Use undo isdn number-property to restore the default.

Syntax

isdn number-property number-property [ calling | called ] [ in | out ]

undo isdn number-property [ calling | called ] [ in | out ]

Default

The system automatically selects a number type and numbering plan appropriate to the upper-layer service.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

number-property: Specifies the type and numbering identification plan of ISDN numbers, a hexadecimal string in the range of 0 to 7F. In binary form, the string contains 8 bits:

· Bits 1 through 4 represent the numbering identification plan.

· Bits 5 through 7 represent type of the number.

· Bit 8 is reserved for extension.

Table 7 through Table 12 show the ISDN number type and numbering plan identification bitmaps for different ISDN protocols.

calling: Specifies calling numbers.

called: Specifies called numbers.

in: Specifies incoming ISDN calls.

out: Specifies outgoing ISDN calls.

Table 7 ISDN number type and numbering plan identification bitmap for AT&T

Ext | Type of number | Numbering plan identification | Information element | Type of number | Numbering plan identification
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |  |  |
|  |  |  | 0 | 0 | 0 | 0 | Calling party number | N/A | Unknown
|  |  |  | 0 | 0 | 0 | 1 | Calling party number | N/A | ISDN/telephony numbering plan (Recommendation E.164)
|  |  |  | 0 | 0 | 1 | 1 | Calling party number | N/A | Data numbering plan (Recommendation X.121)
|  |  |  | 0 | 1 | 0 | 0 | Calling party number | N/A | Telex numbering plan (Recommendation F.69)
|  |  |  | 1 | 0 | 0 | 0 | Calling party number | N/A | National standard numbering plan
|  |  |  | 1 | 0 | 0 | 1 | Calling party number | N/A | Private numbering plan
|  |  |  | 1 | 1 | 1 | 1 | Calling party number | N/A | Reserved for extension

Table 8 ISDN number type and numbering plan identification bitmap for ANSI, ETSI, DSS1, and NTT

Ext | Type of number | Numbering plan identification | Information element | Type of number | Numbering plan identification
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |  |  |
|  |  |  | 0 | 0 | 0 | 0 | Calling party number Called party number | N/A | Unknown
|  |  |  | 0 | 0 | 0 | 1 | Calling party number Called party number | N/A | ISDN/telephony numbering plan (Recommendation E.164)
|  |  |  | 0 | 0 | 1 | 1 | Calling party number Called party number | N/A | Data numbering plan (Recommendation X.121)
|  |  |  | 0 | 1 | 0 | 0 | Calling party number Called party number | N/A | Telex numbering plan (Recommendation F.69)
|  |  |  | 1 | 0 | 0 | 0 | Calling party number Called party number | N/A | National standard numbering plan
|  |  |  | 1 | 0 | 0 | 1 | Calling party number Called party number | N/A | Private numbering plan
|  |  |  | 1 | 1 | 1 | 1 | Calling party number Called party number | N/A | Reserved for extension

Table 9 ISDN number type and numbering plan identification bitmap for NI

Ext | Type of number | Numbering plan identification | Information element | Type of number | Numbering plan identification
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |  |  |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | Called party number | Unknown | Unknown
| 0 | 0 | 0 | 0 | 0 | 0 | 1 | Calling party number | Unknown | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 0 | 0 | 0 | 0 | 1 | 1 | Calling party number | Unknown | Data numbering plan (Recommendation X.121)
| 0 | 0 | 0 | 0 | 1 | 0 | 0 | Calling party number | Unknown | Telex numbering plan (Recommendation F.69)
| 0 | 0 | 0 | 1 | 0 | 0 | 0 | Calling party number | Unknown | National standard numbering plan
| 0 | 0 | 0 | 1 | 0 | 0 | 1 | Calling party number | Unknown | Private numbering plan
| 0 | 0 | 0 | 1 | 1 | 1 | 1 | Calling party number | Unknown | Reserved for extension
| 0 | 1 | 0 | 0 | 0 | 0 | 1 | Called party number | National number | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 1 | 1 | 1 | 0 | 0 | 1 | Called party number | Network specific number | ISDN/telephony numbering plan (Recommendation E.164)
| 1 | 0 | 0 | 0 | 0 | 0 | 1 | Called party number | Unknown | ISDN/telephony numbering plan (Recommendation E.164)
| 1 | 1 | 0 | 1 | 0 | 0 | 1 | Called party number | Abbreviated number | Private numbering plan

Table 10 ISDN number type and numbering plan identification bitmap for NI2

Ext | Type of number | Numbering plan identification | Information element | Type of number | Numbering plan identification
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |  |  |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | Calling party number | Unknown | Unknown
| 0 | 0 | 1 | 0 | 0 | 0 | 1 | Calling party number | International number | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 1 | 0 | 0 | 0 | 0 | 1 | Calling party number | National number | ISDN/telephony numbering plan (Recommendation E.164)
| 1 | 0 | 0 | 0 | 0 | 0 | 1 | Calling party number | Subscriber number | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 0 | 1 | 0 | 0 | 1 | 1 | Calling party number | International number | Data numbering plan (Recommendation X.121)
| 1 | 0 | 0 | 1 | 0 | 0 | 1 | Calling party number | Subscriber number | Private numbering plan
| 1 | 1 | 0 | 1 | 0 | 0 | 1 | Calling party number | Abbreviated number | Private numbering plan

Table 11 ISDN number type and numbering plan identification bitmap for 5ESS

Ext | Type of number | Numbering plan identification | Information element | Type of number | Numbering plan identification
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |  |  |
| 0 | 0 | 0 |  |  |  |  | Calling party number Called party number | Unknown | N/A
| 0 | 0 | 1 |  |  |  |  | Calling party number Called party number | International number | N/A
| 0 | 1 | 0 |  |  |  |  | Calling party number Called party number | National number | N/A
| 0 | 1 | 1 |  |  |  |  | Calling party number Called party number | Network specific number | N/A
| 1 | 0 | 0 |  |  |  |  | Calling party number Called party number | Subscriber number | N/A
|  |  |  | 0 | 0 | 0 | 0 | Calling party number Called party number | N/A | Unknown
|  |  |  | 0 | 0 | 0 | 1 | Calling party number Called party number | N/A | ISDN/telephony numbering plan (Recommendation E.164)
|  |  |  | 0 | 0 | 1 | 0 | Calling party number Called party number | N/A | Private numbering plan
|  |  |  | 1 | 0 | 0 | 1 | Calling party number Called party number | N/A | Unknown

Table 12 ISDN number type and numbering plan identification bitmap for QSIG

Ext | Type of number | Numbering plan identification | Information element | Type of number | Numbering plan identification
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |  |  |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | Calling party number Called party number | Unknown | Unknown
| 0 | 0 | 0 | 0 | 0 | 0 | 1 | Calling party number Called party number | Unknown | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 0 | 1 | 0 | 0 | 0 | 1 | Calling party number Called party number | International number | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 1 | 0 | 0 | 0 | 0 | 1 | Calling party number Called party number | National number | ISDN/telephony numbering plan (Recommendation E.164)
| 1 | 0 | 0 | 0 | 0 | 0 | 1 | Calling party number Called party number | Network specific number | ISDN/telephony numbering plan (Recommendation E.164)
| 0 | 0 | 0 | 1 | 0 | 0 | 1 | Calling party number Called party number | Unknown | Private numbering plan
| 0 | 0 | 1 | 1 | 0 | 0 | 1 | Calling party number Called party number | International number | Level 2 regional number in private numbering plan
| 0 | 1 | 0 | 1 | 0 | 0 | 1 | Calling party number Called party number | National number | Private numbering plan
| 0 | 1 | 1 | 1 | 0 | 0 | 1 | Calling party number Called party number | Network specific number | Private numbering plan
| 1 | 0 | 0 | 1 | 0 | 0 | 1 | Calling party number Called party number | Subscriber number | Private numbering plan

Examples

# Set the type of number and numbering plan identification both to unknown for the calling numbers in incoming ISDN calls on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn number-property 0 calling in

# Set the type of number and numbering plan identification both to unknown for the called numbers in outgoing ISDN calls on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn number-property 0 called out

ISDN commands -- isdn overlap-sending

Use isdn overlap-sending to enable overlap sending on an ISDN interface for called numbers.

Use undo isdn overlap-sending to restore the default.

Syntax

isdn overlap-sending [ digits ]

undo isdn overlap-sending

Default

En-bloc sending is enabled for called numbers. In the SETUP message, ISDN includes all information required by the network to process the call.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

digits: Specifies the maximum number of digits that can be sent in each SETUP message. The value range is 1 to 15, and the default is 10.

Usage guidelines

In overlap mode, called number information is absent or incomplete in each outgoing SETUP message.

Overlap sending is not available in ANSI, DSS1, ETSI, NI, or QSIG.

You can execute the command only when no call is present on the ISDN interface.

Examples

# Enable overlap sending on BRI 2/4/0, and configure the interface to send a maximum of 12 called-number digits in each SETUP message.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn overlap-sending 12

ISDN commands -- isdn pri-slipwnd-size

Use isdn pri-slipwnd-size to set the sliding window size on an ISDN PRI interface.

Use undo isdn pri-slipwnd-size to restore the default.

Syntax

isdn pri-slipwnd-size window-size

undo isdn pri-slipwnd-size

Default

The sliding window size is 7 on ISDN PRI interfaces.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

window-size: Specifies a sliding window size in the range of 5 to 64.

Usage guidelines

Q.921 sends frames in order of their sequence numbers and requires an acknowledgment of each transmitted frame. To improve transmission efficiency, Q.921 does not wait for a transmitted frame to be acknowledged before it sends the next frame. Instead, it uses a sliding window mechanism for transmission.

The sliding window mechanism enables Q.921 to send multiple continuous frames without waiting for the acknowledgment of the previous frame. The sliding window size sets the maximum number of unacknowledged frames. You can tune the size depending on the link status to maximize the throughput.

When sending a frame, Q.921 checks the number of unacknowledged frames. Suppose V(A) is the sequence number of the previous acknowledged frame, V(S) is the sequence number of the frame to be sent, and k is the sliding window size. If V(A) + k = V(S), the system stops sending frames.

Examples

# Set the sliding window size to 10 on ISDN PRI interface Serial 2/3/0:15.

<Sysname> system-view

[Sysname] controller e1 2/3/0

[Sysname-E1 2/3/0] using ce1

[Sysname-E1 2/3/0] pri-set

[Sysname-E1 2/3/0] quit

[Sysname] interface serial 2/3/0:15

[Sysname-Serial2/3/0:15] isdn pri-slipwnd-size 10

Related commands

isdn bri-slipwnd-size

ISDN commands -- isdn progress-indicator

Use isdn progress-indicator to set the progress description in the progress indicator information element of ISDN signaling messages.

Use undo isdn progress-indicator to restore the default.

Syntax

isdn progress-indicator indicator

undo isdn progress-indicator

Default

ISDN uses the progress description assigned by the upper-layer voice service.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

indicator: Specifies one of the progress descriptions in Table 13.

Table 13 Progress descriptions

Value | Description
1 | Call is not an end-to-end ISDN call. Further call progress information might be available in-band.
2 | Destination address is non-ISDN.
3 | Origination address is non-ISDN.
4 | Call has returned to the ISDN network.
5 | Interworking has occurred and has resulted in a telecommunication service change. For example, the ISDN network changes to the VoIP network.
8 | Signals of other protocols than ISDN are present on the D channel.

Usage guidelines

The progress indicator information element describes an event that has occurred during the life of the call.

You only need to set the progress description manually only if you are required by the service provider to do so for compatibility.

Examples

# Set the progress description code to 8 on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn progress-indicator 8

ISDN commands -- isdn progress-to-alerting enable

Use isdn progress-to-alerting enable to enable an ISDN interface to interpret the PROGRESS message as the ALERTING message.

Use undo isdn progress-to-alerting enable to disable an ISDN interface from interpreting the PROGRESS message as the ALERTING message.

Syntax

isdn progress-to-alerting enable

undo isdn progress-to-alerting enable

Default

The progress message is not interpreted as the ALERTING message.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Typically, ISDN devices use the ALERTING message to indicate that called user alerting has been initiated. To work with ISDN devices that use the PROGRESS message to convey this information, you must configure the command.

Examples

# Interpret the PROGRESS message as the ALERTING message on ISDN PRI interface Serial 2/3/0:15.

<Sysname> system-view

[Sysname] interface serial 2/3/0:15

[Sysname-Serial2/3/0:15] isdn progress-to-alerting enable

ISDN commands -- isdn protocol-mode

Use isdn protocol-mode to configure the ISDN functionality of an ISDN interface.

Use undo isdn protocol-mode to restore the default.

Syntax

isdn protocol-mode { network | user }

undo isdn protocol-mode

Default

An ISDN interface provides the ISDN user-side functionality.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

network: Specifies the network-side functionality.

user: Specifies the user-side functionality.

Usage guidelines

An ISDN interface can provide the ISDN user-side or network-side functionality. For two ISDN devices to communicate with each other, you must configure one end as the network side and configure the other end as the user side.

Typically, an ISDN interface is operating on the user side. However, when a BRI interface on a BSV card is connected directly to an ISDN phone, you must configure the BRI interface as the network side.

You must configure the ISDN interface as the user side in the following situations:

· The BRI interface for data services must operate on the user side.

· ANSI, AT&T, ETSI, NI, or NTT is configured.

You cannot configure the command when a call is present on the ISDN interface.

Examples

# Configure BRI 2/4/0 as the network side.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn protocol-mode network

ISDN commands -- isdn protocol-type

Use isdn protocol-type to configure the ISDN switch type on an ISDN interface.

Use undo isdn protocol-type to restore the default.

Syntax

isdn protocol-type protocol

undo isdn protocol-type

Default

The ISDN switch type is DSS1 for both BRI and PRI.

Views

ISDN interface view

Predefined user roles

network-admin

mdc-admin

Parameters

protocol: Specifies an ISDN switch type. Available options include 5ess, ansi, at&t, dss1, etsi, ni, ni2, ntt, and qsig. To specify ANSI, AT&T, ETSI, NI, or NTT, make sure the interface is operating on the user side.

Usage guidelines

You can configure the command only when no call is present on the ISDN interface.

ISDN service providers in different countries implement variants of ISDN to provide varied ISDN services. When you configure an ISDN interface, you must set the switch type on the interface to be the same as the service provider switch type.

Table 14 shows the ISDN switch types available on an ISDN interface.

Table 14 ISDN switch type and ISDN interface compatibility matrix

Switch type | BRI | CT1/PRI | CE1/PRI
ANSI | Yes | Yes | No
AT&T | No | Yes | No
5ESS | No | Yes | No
DSS1 | Yes | Yes | Yes
ETSI | Yes | Yes | Yes
NI | Yes | No | No
NI2 | No | Yes | No
QSIG | No | Yes | Yes
NTT | Yes | Yes | No

Examples

# Set the ISDN switch type to ETSI on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn protocol-type etsi

# Set the ISDN switch type to 5ESS on ISDN PRI interface Serial 2/3/0:23.

<Sysname> system-view

[Sysname] interface serial 2/3/0:23

[Sysname-Serial2/3/0:23] isdn protocol-type 5ess

Related commands

isdn protocol-mode

ISDN commands -- isdn q921-permanent

Use isdn q921-permanent to enable permanent Q.921 link connectivity on a BRI interface.

Use undo isdn q921-permanent to disable permanent Q.921 link connectivity on a BRI interface.

Syntax

isdn q921-permanent

undo isdn q921-permanent

Default

Permanent Q.921 link connectivity is disabled on ISDN BRI interfaces.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

You can enable permanent Q.921 link connectivity only on user-side ISDN BRI interfaces.

When this feature is enabled, the ISDN BRI interface establishes and maintains permanent data link connections automatically, regardless of whether or not a call is present. If the isdn two-tei command is also configured, the ISDN BRI interface establishes and maintains two permanent data link connections.

When this feature is disabled, the ISDN BRI interface transits to the multiframe established state only when a call is present. In multiframe established state, the interface disconnects the Q.921 link if no Q.931 call is present when the T325 timer expires.

To ensure successful call setup when ISDN NI is used, you must enable permanent Q.921 link connectivity.

Examples

# Enable permanent Q.921 link connectivity on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn q921-permanent

Related commands

isdn protocol-mode

isdn two-tei

ISDN commands -- isdn spid auto-trigger

Use isdn spid auto-trigger to initiate a SPID negotiation on an NI-enabled BRI interface.

Syntax

isdn spid auto-trigger

Default

The NI-enabled BRI interface initiates a SPID negotiation when it receives a call request.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The command is available only on NI-enabled BRI interfaces.

When the BRI interface uses dynamic SPID negotiation, you can initiate a SPID negotiation for testing purposes or after an automatic dynamic SPID negotiation fails. If NIT mode is enabled or static SPIDs are configured, you cannot initiate a SPID negotiation on the interface.

You can configure the command only when no call or SPID negotiation is present on the BRI interface.

Examples

# Initiate a SPID negotiation on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn spid auto-trigger

ISDN commands -- isdn spid nit

Use isdn spid nit to enable Not Initial Terminal (NIT) mode on an NI-enabled BRI interface.

Use undo isdn spid nit to restore the default.

Syntax

isdn spid nit

undo isdn spid nit

Default

NIT mode is disabled. NI-enabled BRI interfaces perform dynamic SPID negotiation.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

The command is available only on NI-enabled BRI interfaces.

Typically, an NI-enabled BRI interface must pass SPID negotiation or initiation before it can place a call.

You must enable Not Initial Terminal (NIT) mode on the BRI interface if the NI-type service provider switch does not support SPID negotiation.

You can configure the command only when no call or SPID negotiation is present on the BRI interface.

Examples

# Enable NIT mode on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn spid nit

Related commands

display isdn spid

ISDN commands -- isdn spid resend

Use isdn spid resend to set the maximum number of INFORMATION message retransmissions for SPID negotiation or initialization on an NI-enabled BRI interface.

Use undo isdn spid resend to restore the default.

Syntax

isdn spid resend times

undo isdn spid resend

Default

The number of INFORMATION message retransmission attempts is 1.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Parameters

times: Specifies the maximum number of INFORMATION message retransmissions, in the range of 1 to 255.

Usage guidelines

The command is available only on NI-enabled BRI interfaces.

An NI-enabled BRI interface sends SPID information in the Q.931 INFORMATION message during SPID negotiation and Layer 3 initialization.

The TSPID timer sets the maximum interval that ISDN waits for a response after it sends an INFORMATION message. The timer starts when the device initiates an SPID negotiation or Layer 3 initialization.

The interface retransmits the INFORMATION message if it has not received a response from the service provider switch before the TSPID timer expires. This process continues until the interface receives a response or the maximum number of INFORMATION retransmissions is reached.

You cannot execute the command when a SPID negotiation is present on the interface.

Examples

# Set the maximum number of INFORMATION message retransmissions to 5 on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn spid resend 5

Related commands

isdn spid timer

ISDN commands -- isdn spid service

Use isdn spid service to specify services subscribed to by the device on an NI-enabled BRI interface.

Use undo isdn spid service to specify any service types.

Syntax

isdn spid service [ audio | data | speech ]

undo isdn spid service

Default

During a dynamic SPID negotiation, the device chooses the SPID that includes both speech and data services.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Parameters

audio: Specifies the audio service.

data: Specifies the data service.

speech: Specifies the speech service.

Usage guidelines

You can repeat the command to specify multiple services. To specify all the services, execute the command without specifying any services.

If dynamic SPID negotiation is used, the service provider switch sends available SPIDs to the device. The device selects the SPID that best suits its service configuration. For example, if you specify the data service, the device preferentially selects the SPID that includes only the data service. If you specify the audio and data services, the device preferentially selects the SPID that includes both services.

For the device to accept a SPID that includes any service types, use the undo form of the command.

You cannot execute the command when a SPID negotiation is present on the interface.

Examples

# Specify the audio service on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn service audio

ISDN commands -- isdn spid timer

Use isdn spid timer to set the TSPID timer on an NI-enabled BRI interface.

Use undo isdn spid timer to restore the default.

Syntax

isdn spid timer seconds

undo isdn spid timer

Default

The TSPID timer on an NI-enabled BRI interface is 30 seconds.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Sets the TSPID timer in the range of 1 to 255 seconds.

Usage guidelines

The command is available only on NI-enabled BRI interfaces. You cannot configure the command when a SPID negotiation is present on the interface.

An NI-enabled BRI interface sends SPID information in Q.931 INFORMATION messages during SPID negotiation and Layer 3 initialization.

The TSPID timer sets the maximum interval that ISDN waits for a response after it sends an INFORMATION message. The timer starts when the device initiates a SPID negotiation or Layer 3 initialization.

The interface retransmits the INFORMATION message if it has not received a response from the service provider switch before the TSPID timer expires. This process continues until the interface receives a response or the maximum number of INFORMATION retransmissions is reached.

Examples

# Set the TSPID timer to 50 seconds on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn spid timer 50

Related commands

isdn spid resend

ISDN commands -- isdn spid1

Use isdn spid1 to assign a SPID to the B1 channel on an NI-enabled BRI interface.

Use undo isdn spid1 to restore the default.

Syntax

isdn spid1 spid [ ldn ]

undo isdn spid1

Default

No SPID or LDN is configured for the B1 channel on an NI-enabled BRI interface.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Parameters

spid: Sets a SPID, a string of 1 to 20 digits.

ldn: Sets a local dialing number, a string of 1 to 30 digits.

Usage guidelines

The command is available only on NI-enabled BRI interfaces.

When you use the command, follow these guidelines:

· Make sure the configured SPID is the same as the SPID assigned by the service provider.

· Configure an LDN depending on the service provider requirement. If an LDN is configured, the setting for the isdn calling command becomes invalid.

· You cannot configure a SPID in the following situations:

?span style='font:7.0pt "Times New Roman"'> A call is present.

?span style='font:7.0pt "Times New Roman"'> A SPID negotiation is present.

Examples

# Assign a SPID of 012345 and an LDN of 54321 to the B1 channel on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn spid1 012345 54321

Related commands

isdn calling

isdn spid2

ISDN commands -- isdn spid2

Use isdn spid2 to assign a SPID to the B2 channel on an NI-enabled BRI interface.

Use undo isdn spid2 to restore the default.

Syntax

isdn spid2 spid [ ldn ]

undo isdn spid2

Default

No SPID or LDN is configured for the B2 channel on an NI-enabled BRI interface.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Parameters

spid: Sets a SPID, a string of 1 to 20 digits.

ldn: Sets a local dialing number, a string of 1 to 30 digits.

Usage guidelines

The command is available only on NI-enabled BRI interfaces.

When you use the command, follow these guidelines:

· Make sure the configured SPID is the same as the SPID assigned by the service provider.

· Configure an LDN depending on the service provider requirement. If an LDN is configured, the setting for the isdn calling command becomes invalid.

· You cannot configure a SPID in the following situations:

?span style='font:7.0pt "Times New Roman"'> A call is present.

?span style='font:7.0pt "Times New Roman"'> A SPID negotiation is present.

Examples

# Assign a SPID of 012345 and an LDN of 54321 to the B2 channel on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn spid2 012345 54321

Related commands

isdn calling

isdn spid1

ISDN commands -- isdn two-tei

Use isdn two-tei to configure a BRI interface to request a TEI for each B channel.

Use undo isdn two-tei to restore the default.

Syntax

isdn two-tei

undo isdn two-tei

Default

All B-channels on a BRI interface use the same TEI.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Terminal endpoint identifiers (TEIs) are assigned by the service provider to identify terminal devices. A TEI identifies one terminal device on a point-to-point link and identifies more than one terminal device on a point-to-multipoint link.

Typically, service provider switches assign one TEI for both B-channels on a BRI interface. If the service provider switch requires the B-channels to use different TEIs, you must configure the BRI interface to request a TEI from the switch before the interface can establish a call on a B-channel. If per-channel TEI assignment is not configured, only one B-channel can be brought up. For example, you must configure per-channel TEI assignment when a BRI interface is connected to an ISDN NI compliant DMS-100 switch in North America.

You cannot configure per-channel TEI assignment in the following situations:

· The BRI interface's data link type is point-to-point.

· A call is present on the interface.

Examples

# Enable per-channel TEI assignment on BRI 2/4/0.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Router-Bri2/4/0] isdn two-tei

Related commands

isdn link-mode p2p

ISDN commands -- permanent-active

Use permanent-active to enable persistent Layer 1 activation on a BRI interface.

Use undo permanent-active to disable persistent Layer 1 activation on a BRI interface.

Syntax

permanent-active

undo permanent-active

Default

Persistent Layer 1 activation is disabled on a BRI interface.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Persistent Layer 1 activation is available only on network-side BRI interfaces.

For energy efficiency, a network-side ISDN interface typically deactivates the physical layer when the data link layer connection is disconnected. To maintain physical layer connectivity when the data link connection is lost, enable persistent Layer 1 activation. This feature prevents Q.921 from sending deactivation requests to the physical layer.

Persistent Layer 1 activation can only maintain the active state of the physical layer. It does not activate the physical layer if you enable it when the physical layer is inactive. In contrast, Q.921 attempts to set up data link connections if you enable permanent Q.921 link connectivity when no data link connections are present.

| NOTE: Only BRI interfaces on the BSV module can operate on the network side.

Examples

# Enable persistent Layer 1 activation on BRI 2/4/0, a network-side BRI interface.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn protocol-mode network

[Sysname-Bri2/4/0] permanent-active

Related commands

isdn protocol-mode

isdn q921-permanent

ISDN commands -- power-source

Use power-source to enable a BRI interface to supply line power to the terminal equipment.

Use undo power-source to disable a BRI interface from supplying line power to the terminal equipment.

Syntax

power-source

undo power-source

Default

A BRI interface does not supply line power to the terminal equipment.

Views

ISDN BRI interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

You can configure only network-side BRI interfaces to supply line power to the terminal equipment.

Only ISDN BRI interfaces on the BSV module can operate on the network side.

You can configure the command only when no call is present.

Examples

# Configure BRI 2/4/0 to supply line power to the terminal equipment.

<Sysname> system-view

[Sysname] interface bri 2/4/0

[Sysname-Bri2/4/0] isdn protocol-mode network

[Sysname-Bri2/4/0] power-source

Related commands

isdn protocol-mode