I am currently using CUCM 9.1 and have 7 gateways of which 5 are MGCP and the other two are H323.
I have recent receive some Polycom IP5000 conference phones and, with a little initial difficulty, have configured these to work correctly as 'Third Party SIP Basic' phones through the MGCP gateways however they will not establish a call through the H323 gateways.
I have configured a Cisco7942 with the same configuration with exception to the Phone Type where the Polycom is 'Third Party SIP Basic'. The Cisco phone works correctly however the Polycom phone will not. What is unusual is that I have connected and registered both phones at the same time and the Polycom will make a call through the H323 gateways when the Cisco phone is also connected however, remove the Cisco phone and the Polycom phone stops working too.
Anyone able to assist me with this?
