IP Telephony and Phones

Hi,Just want to know that like we change the codec of Cisco or non Cisco IP Phones in cme environment by giving command " codec g711alaw". But in CUCM can we change the codec per phone or not ? Thanks

Dear Experts;I am very new to asterisk.We have a contact center and customer needs to record all the calls from or to the agents.I have created a SIP trunk and recording profile as per the call manager 7.1 documenation and Installed Free Asterisk PBX...

Hi,i have problem .In srst mode all the calls get connected successfuly except the international numbers and the reason is the the last digit of the number is getting stripped which is very strange !dial-peer voice 70 pots description SRST Internatio...

Hi Experts,In my LAB, gateway is configured as mgcp in CUCM with one E1 pri.I want to configure one FXS port for FAX machine in this gateway.what configuration is required on mgcp GW and at cucm end.Plz help.sajeel

Hi Allwe have created the following xml file and copied all images to flash but cannot change the background image the phones.<CiscoIPPhoneImageList><ImageItem Image="TFTP:Desktops/640x480x24/tharawat640.png" URL="TFTP:Desktops/640x480x24/tharawat640...

I have an existing Callmanager system connected to an Asterisk box that has been running for quite some time.Just recently a problem came up that I'm having difficulty tracing down.Problem is when SOME IP phones (mostly 7940's) call an inside extensi...

please gudie me how can we enable voice packet compression in Asterisk/Voipswitch with G729/G723 codecs baiscally i want to compress voice packets in to 8/10kbps how can i do this please guide me awaiting thanks.

I am very new to IP VoIP, and I am starting to have an issue with my 7911 and 7961 phones not booting up. These are phones that were active and just stopped working. When I try to power them up using either POE or a power adapter, they will flash som...

%SIP-3-BADPAIR: Unexpected event 21 (SIPSPI_EV_CC_CODEC_LOCAL_DNLD_DONE) in state 25 (SIP_STATE_MIDCALL_RECD_SUCCESS) substate 0 (SUBSTATE_NONE)We are getting dead on transfer through CVP. I know it has something to do with SIP stack. and something t...

Hi, Once a week, since the installation of the unity, I got a major issue. The Unity 7.0.2 Crashing. When that event happen the only way to put unity back running is to restart the server.Im unified with Domino DUC 1.2.4 and the Lotus notes versio...