I am running a Cisco CCM 4.1(3)sr3b and IP2IP GW c2800nm-adventerprisek9_ivs-mz.124-8.bin
CCM -> SIP -> IP2IP GW - H323 (to Carrier)
It displays the CLID 60% of the time but the rest of time i get Unknown.
if i change to CCM - h323 - IP2IP GW - H323 to carrier it works fine.
I did want to try SIP all the way through but if i do that all calls after transfering them on get cut off after 15 seconds...
For real-time, delay-sensitive traffic such as voice, it is better to deny network access under congestion conditions than to allow traffic onto the network to be dropped and delayed. Try this URL