4 Switch Interface Administration

Digital Interfaces

PRI Layer 2 and Layer 3 Parameters

Your PRI service provider may need to know some Layer 2 and Layer 3 parameters used by the voice system. Table 13 and Table 14 on page 182 provide a list of the most commonly requested parameters. Incoming calls to the voice system should be provisioned so that the channel number is exclusive and not preferred.

If the switch is configured to deliver ANI on a subscription basis, it is not possible for the voice system to request a different type of ANI on a call-by- call basis.

While it is not recommended to change timer values from their defaults, the /vs/man/cat4/pri.rc.4 manual page describes how PRI timer values and a few other parameters can be changed if that becomes necessary.

Table 13. PRI Layer 2 Parameters

Layer 2 Parameter

Value

 

 

Retry Count N200

3

 

 

Timer T200

1 seconds

 

 

Timer T203

30 seconds

 

 

UCS 1000 R4.2 Administration 585-313-507

Issue 3 April 2000 181