You could try this...When thecaller-id alerting ring command is configured as 1, and then when the call comes,Caller-id is displayed for a second, and it goes away.To resolve this issue, enter the following commands under the voice-port 0/0/3.caller-...
Reading through the document as in the link below, in which kind of configuration environment are you trying to go live ?http://www.cisco.com/en/US/docs/voice_ip_comm/cups/7_0/english/integration_notes/federation/Overview_chapter.html