IP Telephony and Phones

Hi Guys,   Can anyone assist? Im making a Sip call from a Doorbird intercom to a Zoipher soft client. Registration works, but theres no call :(   Some debug:   Aug 9 05:48:06.663: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg: Received: INVITE sip:1002@...

hi, I found the configuration under voice-port of my ISR4431 disappeared suddenly after the E1 had down and up last week. anyone encountered this before? can it be avoided? thanks

  Hi Guys,   Customer is having one Conference Number. To join this conference we need to dia this number, we get IVR - Please enter the PIN follows by #.   on cisco 9971 phones IVR gets repeated even after entering PIN#. Like phone is not recognisin...

What is the code that I can use to mute all the guest during a conference call with the exception of Chairperson?     

Hello all: I am working for a small company where we use Cisco CME router for our VoIP communication. Our company brought two new digital phone lines and asked me to connect it through FXO ports, so we can receive and make calls through our VoIP phon...

Hi All I am working on a business case for a large voip implementation for approx 2500 users. I would like to hear other peoples business cases when moving from an analogue to a ip based system. Sometimes I feel that the business case is hard to just...

Good dayI have a problem, my cucm has 73 registered model 6921 IP phones, but 12 model 6921 IP phones that do not register.  I have reset the Network and Security option; I also went back to delete it from the CUCM and returned it manually, but it st...

Hello, We have two PRI's terminating on CISCO 2800 router working as H323 gateway. It is in production and working fine. Now, I have a requirement of providing 8 dedicated channels to an internal company. Please assist how can i achieve this ?   Rega...

When dialing from an 8845 device to an MXP1000 desktop model, once the call is connected, if the person at the 8845 device presses the front panel buttons handset, headset, mute the video call all together drops as if it were released or hung-up.  Ho...

  We need to upgrade CME 8.6 on 2921 Router  to CME 11.5 . Existing setup: ++ We have 7942 and 6921 IP Phones. Questions. ++ What is up-gradation Procedure?  ++  Which CME configuration file and ISO File needed. ++ Plan of Actin and Impact ? ++ S...

Is it possible to configure existing cisco CUCM for same extension for newly installed ATA187 and  existing ferntel IP phone? Is there any Doc showing how to do it which we can study?

Hi Friends,   I need help to configure the sip profile , with the follow parameters. Could you help me?   Message Header Via: SIP/2.0/UDP 10.7.75.154:5060;branch=z9hG4bK-524287-1---76e9c445195aa645;rport Max-Forwards: 70 Contact: <sip:11307437XX@10.7...

I have case with one of our customers, that he has only analog line card TLU44, when I connect it to FXS port I can receive the call but Cant send it, the Cisco phone giving ring tone and the FXS show that it is ringing but the Ericsson does not have...