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4 Switch Interface Administration Digital Interfaces
UCS 1000 R4.2 Administration 585-313-507 Issue 3 April 2000 181
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