Cisco UCM SIP trunk to AVAYA S8800 using different RTP ports
Posted on 2011-03-02
I have a Cisco UCM version 7.0 and my system is connected to a AVAYA system via SIP trunk. I have a question about a request that I just receive from the AVAYA VOIP engineer requesting for me to change the Cisco VOICE traffic to use UDP port 52048 – 53339 to match his side.
What is the impact to my Cisco UCM or is this even recommended?
What ports Cisco UCM uses for VOIP traffic? Is it RTP 16384 – 32767?
Any documentation that you can share about the implication to the Cisco UCM when using different port range will be great…