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zangelo_vbar
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Level 1
Member since ‎06-06-2007
‎08-18-2017
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MTP required to use G.729 and RFC 2833 over a SIP trunk?

10-18-2010
I have a CUCM 7.0 cluster with a SIP trunk to a 2811 CME router.   When I switch the codec in CME to G.729 I lose DTMF functionality.  I noticed in the SIP message traces that CUCM doesn't attempt to negotiate RFC 2833 (telephony-event in the sdp) an...

MTP Required on G.729 for RFC 2833?

10-18-2010
I have a call that passes through the following devices: Cisco 7942 --(SCCP)--> Cisco CME (28xx ISR) --(SIP Trunk)--> UCM 7.0 --(MGCP)--> Cisco 28xx ISR --> PRI I'm not able to get DTMF to relay reliably when using G.729 (Annex A or B).  In the Cisc...

Switch not delivering power to 7940G-GE

01-28-2008
I have a 24-port Catalyst 3560G that is providing power to a dozen or so IP phones. I recently unplugged one of the phones and when I went to go plug it back in the power wouldn't resume. I tried replacing the phone, no power. I tried plugging both...
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Member Since ‎06-06-2007 06:08 AM
Date Last Visited ‎08-18-2017 03:55 AM
Posts 13