IP Telephony and Phones

Hi All,   When I configure AAR destination mask, it works. But when I put the same number in External Phone Number Mask, it doesn't work . Has anybody got it working in CUCM 11.5 ?   Calling Phone Device Page: AAR CSS , AAR Group is configured Called...

Hello,   We recently moved to CUCM 12.x. Previously there was 8.x and a Unity Card on a router with PRI.   Incoming calls used to go the IVR, where the caller used to dial the extension if they knew.   Can this be achieved on the CUCM 12.x with the U...

By default, we do not provide dialtone or outside dialtone. We have a few analog devices, third party modems, that apparently are programmed to dial 'nine' but will not submit the destination TN until dialtone is received. We created a specific parti...

I have a problem with busy tone, some of my users try to call one internal phone, it gets the busy tone right away. the configuration will post below  ephone-dn 10number 104label xxdescription xxname xxcall-forward max-length 11call-forward busy 700c...

Hi - We're attempting to use auto registration in CUCM to simplify the provisioning for ongoing installs of Cisco Video codecs at our facilities. This feature works great to get us about half way there but there are still a few things we have to go b...

I was just wondering if there is a good reference out there for what a CUCM Trace looks like when a call invokes a transcoder.  I want to see what CUCM looks for when comparing the media capabilities, and what the transcoder invoke looks like. Also w...

Is there a way to program 911 into an IP phone? Is this possible?

Hello We have a long standing telephony solution except with live with a niggle that I would like to resolve and unable to find the solution.   From a desk phone when dialling a contact in the Corporate Directory the call errors as the number for the...

I have a 8841 phone and all of the sudden it is giving me 406 errors on notify. The BLF lights on the phone all started blinking, that's how I noticed.What is wrong in this SIP header? NOT Dec 05 14:23:44.107733 (658:687) voice- =====> Send (UDP) [18...

  Hello, we have a CME with 8821 IP Phones, both on latest firmware, the 8821 are registered and working but after a while some 8821 wireless phones loose the registration to the CME, the ping to these 8821 keep working but they loose registratio...

Hello everyone. I have started new job and I previously worked as Network and Security administrator. I have studied Voice and here it is my first experiences with Telephony world. Today, i faced one interesting problem. One worker`s phone was workin...

Hello, guys,   I have a third-party ip phone in a branch office registered on CUCM 11.5. When I call to any internal extension, it works fine. But when I try to call to any number going through the PSTN, the call gets completed, but muted.   I'm usin...

what is the bandwidth requirement of cisco 9971 model phone during registration?