Am trying to configure CER for more than 1 site. Do I need to add 911, 912, 913 CTI RP for each location? 

Hi,    We are facing problem with hearing ring back over PSTN. PSTN PRI----->MGCP GW. When user receives a inbound call over PSTN, the calling party hears busy tone, but the IP Phone/analog is not actually busy. This is happening with internal calls ...

Hi,    How can disable the "hook key" in the IP phone? to be more precise, if someone answers a call they shouldn't be able to disconnect it, i have disabled the "Endcall" button in the softkey template. But still the call can be disconnected by off-...

Dear All,             Am facing issue with offnet calls not reaching the VM Box. It was working earlier, all of sudden calls are dropped without reaching the VM.Scenario:Extn 1234IP Number: 8881234In a PSTN Cloud 8881234 is mapped to a DID. Users are...