IP Telephony and Phones

Hi guys, I am aware that the iphones 7945G and 7965G support TLS and SRTP, when using SIP signaling and integrating with CCM. I do however wish to integrate them with an opensource SIP proxy such as kamailio, which in turn is integrated with Asterisk...

Hi Friends,We are planning to up grade our CUCM setup from 8.6 to 9.0.Before doing it, would like to the difference between version 8.6 and 9.0. Basic information about our setup:1. Current CUCM ver: 8.62. Users count : 55003. Using feature : Extensi...

We are using Cisco 7821We have configured multi call waiting option. I can see when calls comes on the phone we can see the number displayed  which is waiting for fraction of seconds and only the light will blink after thatIs there any option to keep...

Hello,friends!I have already published a discussion here https://supportforums.cisco.com/discussion/12089656/cisco-cme-and-calls-through-sip-provider and you helped me, everything works well for Russian numbers.When I tried to add the configuration f...

Dears when i make a phone call to a mobile number sometimes it work just fine and sometimes it drop and give a busy tone and i had to try 3 to 10 times before it connect spechially if the number is not in use before this is the syslog from debug     ...

I have two or more ip phones with the same DN. How can I monitor all devices whit the same DN in attendant console?Regards

Hi allI have created a sip trunk between 2 cucm servers, the calls seem to work one way just fine, however when they try to call me they get a fast busy tone!any ideas whereI should look to fix this ? cheers 

Hello, We are using CUCN 8.6.  I imported a user, and no matter what changes I made calls would always go to default Unity greeting.  If I used that DN for another user it worked fine.  I deleted this user and re-added him back in, issue was still pr...

Good afternoon.  We're having an issue with a B-ACD for one of our clients.  Almost everything works correctly except for any option that tries to send a caller to a voicemail destination which includes 3 parameters.param queue-overflow-extensionpara...

Hi All i have a soundstation IP 7000 registered with CUCM 7.1.3. I can make and receive calls but i cannot start or receive a conference call. Can anyone please assist. thanks