R0106-HP MSR Router Series Layer 2 - WAN Configuration Guide(V7)

98
To configure SPIDs on a BRI interface:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter ISDN BRI interface view.
interface bri interface-number N/A
3. Assign a SPID to the B1
channel.
isdn spid1 spid [ ldn ]
By default, no SPID or LDN is
configured for the B1 channel on a
BRI interface.
4. Assign a SPID to the B2
channel.
isdn spid2 spid [ ldn ]
By default, no SPID or LDN is
configured for the B2 channel on a
BRI interface.
Configuring the TSPID timer and INFORMATION
retransmission
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.
To configure the TSPID timer and the maximum number of INFORMATION retransmissions:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter ISDN BRI
interface view.
interface bri interface-number N/A
3. Set the TSPID timer.
isdn spid timer seconds The default timer value is 30 seconds.
4. Set the maximum
number of
INFORMATION
retransmissions.
isdn spid resend times The default is 1.
NOTE:
You cannot perform this task when a SPID negotiation is present on the interface.
Enabling NIT mode for NI-type switches incapable of SPID
negotiation
Typically, the 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.