IP Telephony and Phones

On my 8851 phones, I am unable to clear out the call history. I go to Services -> Recents ->All Calls, then select Clear List -> Delete. However, the call list reappears when I go off-hook, or press the Navigation Key - down button. If I power cycle ...

I'm having trouble configuring my UC520 to make calls via my sip provider. After configuration the SIP trunk with CCA, the SIP dial peer was not found. After googeling around and read many pages and tuning the configuration file by hand the dial peer...

HelloI have cisco ip phone 8831.The phone won't register .I have cucm version 8.5.1.15900-4 and I installed device pakage and  I made reset to pub and sub.The phone accept ip but won't register even though we configured tftp manually any idea?

Hi guys I have a problem with the 7861 series phones they have a lag issue they take long to respond to commands .This is the second time Im experiencing the same issue at first thought the issue was the device type and profile type associated with t...

Hello, I've an issue where outbound calls work from skype clients to external phones but inbound dont ; the call connects but no audio is available. The setup is fairly simple. We have a gateway server on the LAN that connects out to the sip provider...

I have opened a ticket with Cisco but I want some input from the community. I have deployed ISR4331 routers. When I do SMART Licensing, it applies 110 SRST License which is the max that the router can do.  I have several sites that have a lot fewer l...

Can someone provide me with a list of applications that PCD 12.6(1) can migrate/upgrade? I know that I can use PCD to migrate/upgrade Call Manager, Unity Connection, but can I also use it for Contact Center, and Expressway?

Hello , I have location where SIP is protocol used between IP phone and CUCM, H.323 signalling configured between CUCM and Cisco Voice gateway.When i did CUCM trace and went to RTMT > Voice/Video > Session Trace Log View> Real Time data, when i run t...

Hi Team, Can i configure  Cisco SIP Phone 3905 to use Forced Authorization Code ? I am using Call Manager 9.X.Regards,Praful Sartape

Hi my Cisco router 3900 always send PCMA in sdp but telco wants PCMU only.CUCM -> CUBE trunk has MTP checked, but MTP is shutdown state. Does this matter? voice class codec 2 (applied on the outgoing dial-peer to ITSP)codec preference 1 g711ulawcodec...