IP Telephony and Phones

Hello,we change our ISP from ISDN to SIP. With the new ISP we use SRTP. With our phones it is no problem to call via this connection. The phones have certificats and all is fine. But with our VG310 i have a question. I know i can connect the VG310 vi...

Hello guys, Our client has a requirement that they need to have an automatic calling feature to automatically contact multiple users on predetermined numbers, and play a prerecorded message. I believe this can be done by Cisco Paging, but they don't ...

Hi alli recently configured  pholycom phone model no is 3111-33215 on CUCM 11.5 its working only outgoing call only ,its not working incoming call and conference ,please can suggest to me to resolve this issue .

Phones on our voice vlan do not get a dhcp assigned ip address. However the computers connected to the switch do get an ip address on the access vlan. The switch has a trunk port going to the upstream switch and that looks fine. Any ideas? 

Hi, my cutomer wants a busy light to prevent interception of calls in meeting rooms. Plug off the phone is not an option. Is there any solution for this? Thank you

Hi, The installation is CUCM 11.5 with CUBE gateways to ITSP services.  Signalling is SIP delayed offer CUCM->CUBE, early offer to the ITSP.   This has been in place for some time, the only significant recent change was upgrade CUCM from 9.1 to 11.5....

Hi all, Im getting the following error when I want to add my sub to my active publisher.  How can I get the capture.txt file? Thanks. 

Our users are stating that they only hear the phone ring through their plantronic headset. The issue is they don't want to have to wear the headset all day in order to know if a call is coming in or not. Is there a way to configure both the phone and...

Hello, We currently have SRST's at many remote sites.  Each site has approximately 5-10 POTS lines which cost $20-$40/each depending on site.  I was curious if it's possible to use something like cellular instead of POTS lines for this.  Does anyone ...

Has anyone know why dealing a number one time, the other end detects as it was dialed 2 times? We use CUCM 7.xx Not happen with all number dialed, just with some services we call into. Any clue how to solve it? Here a video descriptionhttps://vimeo.c...

Hello, I know there is a way to do this however I am at a loss.  What i am trying to accomplish is to have users call a DID number which will then get transferred to unity and prompt them for a mailbox number.  After entering the internal extension n...

Hello together, maybe you can help me. following situation:I got an external number (+49711...) which has a forward to one of our numbers (2888). when nobody picks up the phone it jumps to an unknown mailbox. i call the internal number and when nobod...

Pressing hold on DX video endpoint disconnects the call. Call Flow : DX -->VCS -->SME (10.200.75.82) --->SONUS SBC(10.200.99.70) -->ZOOM Here are the SIP messages exchanged - INVITE sip:83609666@10.200.199.70:5060 SIP/2.0Via: SIP/2.0/TCP 10.200.75.82...

Hi All I have a CME on 3925 running ISO 15.5, and the CUE is 8.6 from sip trunk to CUE Voicemail. the call comes in after 2 rings it should go to voicemail, but the call drops for a sec then it carries on ringing again. no supplementary-service sip m...

Hello Everyone, I hope you can help me with this odd problem.We have this migrated CUCM deployment (12.5) ,  We have 2 Branches, each with Its own Subscriber, Publisher is in DC. Users o from of this branches are experiencing random call termination,...