One way audio between BRI on 2801 and IP phone on UCM
I'm stuck trying to solve a problem with one-way audio. There is a following diagram: subscriber (DN 3318) - PBX - BRI - 2801 (IP 172.25.0.30) - SIP trunk - UCM 8.6 (IP 10.7.81.65) - 7961 IP phone (DN 1001, IP 10.1.12.16). If I call 3318 from 1001 and can't hear audio, PBX subscriber can hear me. On IP phone I see no packets coning from 2801 in stream statistics. SIP signalling is bound to lo9 interface and I can ping IP phone from lo9, there is no any ACLs or NAT between them. On 2801 I see tx packets and correct remote media addres in show call history voice output.
I see the following output on debug voip rtp but unfortunately I don't know how to decode it
Aug 21 14:12:53.343: voip_rtp_exchange_context_info
Aug 21 14:12:53.343: voip_rtp_exchange_context_info gccb not found, context is NULL
Gateway configuration and IOS 12.4(23) is typical and works on many other sites. This gateway was working properly for several years without any configuration changes. Could anybody give me a link where can I read how to understand RTP debug? What should I check further?
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.