IP Telephony and Phones

Hello Experts,Is it possible to have SIP phones (7962) configured on CME (UC540) and send the calls out via the SIP Trunk ? I am having trouble, where SIP phones can talk with each other but as soon as I enable the SIP trunk sip phones try to call th...

Hello all!I just want to know if all of the IP phones (69xx, 89xx, 99xx series) from Cisco are able for a downgrade of the firmware.Or depends this on the software/firmware?Background: We need for testing purposes different setups of those phones wit...

I'm running CME version 4.1 on  a network of C2800 routers. The central router is the dail peer pots  PSTN access point for the network. This is a satellite network and I want to configure so the remote site IP Phones  can use G729 vice G711. How or ...

We are running CUCM 7.1 with 7960 and 7965 phones. The 7960 phones can access the corporate directory but the 7965's cannot. we get the error message "host not found." same error happens when we push the services button. configurations in 7960 almost...

HelloI am facing the following problem. Last week i have installed a CCME to a customer. Everything works fine exect that during the day some phones with no obvious reason unregister and directly register again as belowDec 13 15:46:13.632: %IPPHONE-6...

Hello Friends,I have 3 Cisco 3911 SIP phone which are not supported SCCP . I need to register these phone on UC520 . Can you please suggest me something what are the necessary steps to register these phones .  Phones are not coming up in service .als...

All:I have a 6.1 cmgr using a H323 gateway. Gateway has sip dial-peers to carrier sip server for primary pstn service. Gateway also has 2 FXO POTS lines. I have the FXO dial-peers set as preference 2.Yesterday carrier had failures in their network bu...

I am using a cisco 2651xm with C2600-ADVENTERPRISEK9-M, Version 12.4(15)T14, RELEASE SOFTWARE (fc2).When the telephony-service transfer-system is configured with full-blind calls drop while a transfer is attempted. It works ok on full-consult, but th...

Hi ,We are using CUCM 7.1.5 ,with one H.323 gateway. I am able to make or receive external calls,but can not park or transfer the call to another extension.Trying to transfer the call in the same partition. When the external call is connected, I see ...

We have about 100 conference phones which we migrated over from 1 location to the other but all on the same network. We have tried everything including factory reset and the conferencing devices will not go back to default. When we connect them to th...

Hi everyone,I have situation with call transfer option on CME 7 version.Basically, call transfer work, but I some situation it don't, like in this this:I am trying to make a call to my mobile phone number from my office desk phone,and make transfer t...