© 2008 Cisco Systems, Inc. All rights reserved.
•
Debug commands:
debug ccsip message
to check the SIP Register message
•
Common areas to check:
•
Check ephone-dns / hunt groups / dialplan patterns / POTS dial peers to
ensure registration of only required numbers is done
•
Make sure registrar server CLI under sip-ua is correct
•
Make sure the authentication CLI under sip-ua is correct
•
Make sure the registrar server can be reachable (especially if using DNS)
5.3
Troubleshooting SIP inbound or outbound calls on the UC500
If calls are not being able to be placed to / from the UC500 to the SIP – the below would
be useful to look at:
•
Show commands:
show ephone registered
Ensure the SCCP phones are registered
show voip rtp connection
Check the RTP streams & IP address / port numbers
show sip-ua call
Check if the active SIP calls are up
show call active voice brief
Check if there are SIP & SCCP call legs up
•
Debug commands:
debug ccsip message
for SIP messages in & out
debug voip ccapi inout
for generic IOS voice stack – dialpeers etc
debug voice translation
for IOS voice translation rules
debug ephone detail mac-address <mac of phone>
for SCCP phone
debug voip rtp session named-events
for RFC 2833 DTMF
debug sccp message
for Xcoder if that is involved in call flow
•
Common areas to check:
•
If no inbound or outbound calls are successful DNS resolution may not be
working
•
From the CLI, attempt to ping the DNS
•
Check “ip nameserver” addresses.
•
Make sure that “no ip domain-lookup” is NOT configured
•
If no inbound or outbound calls are successful DNS resolution may not be
working or registration may have failed