sIP trunk inbound transfer to phone then forward to voicemail getting dead air

[VON CLAWSON]

Just moved from PRI to sip trunk on a 2851 with CME running IOS 12.4(24)T.  Inbound and outbound calls are working fine as well as direct calls to a phone that forwards to voicemail.  It is only when transferring to a phone and then forwarding to voicemail that I get the dead air. Found this bug

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCtl79911/?referring_site...

But I already have codec g711ulaw on the inbound dial peer.  All call legs are g.711ulaw.  already have no supplementary-services moved-temporarily and no supplementary-services sip refer

Any advice would be greatly appreciated.

[Vaijanath Sonvane]

Hi Von,

Please make sure below routes are correct on the router. Especially the one highlighted in RED.

ip default-gateway 192.168.0.1
ip route 0.0.0.0 0.0.0.0 192.168.0.1
ip route 192.168.1.0 255.255.255.0 192.168.0.0

Also, on the router you don't need "ip default-gateway" command as it might cause problems.

Thanks,

Vaijanath S

(Please rate if this is helpful)

255.255.255.0 192.168.0.0

[VON CLAWSON]

Thanks for the response.  I have removed the route statement and tested again.  But, still get the same results.