Cisco 2811 as CUBE SIP2SIP gateway to a SIP provider. Behind CUBE a bunch of CME all connected to the CUBE through SIP. Works great.
Started with UCM7 connecting through a SIP trunk to CUBE. Call setup works but about 50% of the outbound calls (inbound works all the time) fail due to RTP issues ( I think ). Caller then hears a continues tone which eventually stops.
Tried all kind of scenario's. Different codecs, hardware MTP, with or without MTP, h323 gateway etc.
What is see in the traces on the CUBE that when a call fails I see that it tries to reuse an (or the) existing RTP stream. When it does that the call fails. After the second, third or fourth time the call in reinitiated and when it sets up a new RTP stream is works out ok.
Any thought regarding timers and why the UCM behaves differently then the CME?
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.