[cisco-voip] AS5300 Gateway as SIP Phone Client

[Paul Gani]

We have an AS5300 IOS 12.3(12) with 4 E1s operating as a H323 gateway. 
Several dial-peers are configured, accepting calls from other 
gateways/gatekeepers as well as sending calls to other 
gateways/gatekeepers.  Our only authentication performed in either 
direction is by using number (DNIS) prefixes.

We would like to test sending calls to a SIP account we have acquired. 
We have been given an IP address, username, and password.  This is the 
information that would normally be programmed into any one of dozens of 
low cost SIP adapters/telephones.  However, I have not been able to find 
information on how to program our AS5300 gateway to act as a SIP user 
agent and be able to specify transmitting the username/password as part of 
the client registration process.  Forgive me if I don't appear to 
understand the concepts or terminology precisely - I'm still learning.

Is what we want to do possible?  Can a Cisco gateway be programed as a SIP 
adapter/telephone client?  I have not been able to find anything in the 
IOS documentation for the "sip-ua" and dial-peer sections addressing this 
situation.

Thanks,
Paul Gani