IP Telephony and Phones

SIP Trunking

Hello Everyone, We have a mega CUCM cluster with 21 servers for our multi sites Clustering Over WAN deployment. Number of site: 20 with different area codes Number of users: 50000 CUCM Version: 10.5 CUBE (HA): ISR 43xx Current situation: Every si...

Resolved! DTMF Fails on outbound calls with SIP Trunk to PSTN

I have a SIP gateway that works with both inbound/outbound calls. However when I place an outbound call to an external source through the PSTN I can't pass DTMF. In call manager the route pattern sends calls to the SIP gateway via a SIP trunk in ca...

Timestamp Change in RTP Header

According to the RTP RFC (3550) Timestamp must increase in each RTP packets:"The timestamp reflects the sampling instant of the first octet in the RTP data packet. The sampling instant MUST be derived from a clock that increments monotonically and l...

Cisco 4351 router integrated with CUCM

Hello , I have a CUCM infrastructure and I have 2 PRA lines (2 x 30 Channels) which we are planning to terminate on a brand new Cisco 4351 . Our supplier quoted us 1 x 64-channel DSP module. Is that correct? They also quoted CUBE-10 license? ...

Cisco IP Communicator 8.6.6 interoperability VM Horizon

Hi Guys, I would like know if there are interoperability between Cisco IP Communicator 8.6.6 and VM Horizon. I tried install the IP Communicator in the virtual machine and didn´t worked. I am not able to put the IP TFTP Server Thanks,Other IP Tel...

New collaboration deployment...which ports needs to be open at firewall

Hi everyone, A customer of us is going to have a new cisco collaboration environment. I need to know excatly which ports needs to be open at firewall site, before we install all the appliances They have a fortigate firewall. Information is regard...

Resolved! Assistance with Gateway/CUBE voice recording to multiple destinations

Could anyone kindly give me a clue how to record audio calls to two different recording servers simultaneously. I've been looking at the CUBE documentation for media recording and it appears SIPREC and the UC Gateway API XMF should allow me record ca...

Forwarding external calls to external Number

When dials by internal digits (1234), it's ok to forwarding. But when dial external digits (123456789) it's always busy. I explored similar issue, but not able to fix. CM was forwarding external calls correctly a while ago.

DELAY IN SIP TRUNK TO ITSP

Hi Guys, I have a sip trunk between CUCM and ITSP directly without CUBE involved. I have a signalling and media IP and incoming calls are working perfectly but outgoing calls have a delay which is constant. Sometime it works but sometimes it doesnt. ...

Resolved! Receiving call on my ip phone on someones behalf

Hi, I have IP Telephony (cucm 11.5). I want to receive call on behalf of my friend on ip phone. That is, when user A call user B( when user B is not available on his ip phone) Will user C be able to get the call made by user A to user B. Call should ...

Caller ID from SIP Trunks to mysql

Hi Everyone, kindly i just want to wonder if it possible to read the caller number from Invite MSG and inject it from specific mysqli-DB. i really appreciate your kind support Thanks

7861 not showing called number on the phone display

Hi,We have 7861 phones with CUCM V11 and phone Rel 12-0-1-11. When calling internal numbers we can see on the phone display the name of the person we called to. When calling external number we don't see the number we dialled on the display. Any idea ...

IP Telephony and Phones

Forum Posts

SIP Trunking

Resolved! DTMF Fails on outbound calls with SIP Trunk to PSTN

Timestamp Change in RTP Header

Cisco 4351 router integrated with CUCM

Cisco IP Communicator 8.6.6 interoperability VM Horizon

New collaboration deployment...which ports needs to be open at firewall

Resolved! Assistance with Gateway/CUBE voice recording to multiple destinations

Forwarding external calls to external Number

DELAY IN SIP TRUNK TO ITSP

Resolved! Receiving call on my ip phone on someones behalf

Caller ID from SIP Trunks to mysql

7861 not showing called number on the phone display

Security office deployment options

LRG when branch has two companies/carriers

8861 8x8 drop phone calls and sound not clear

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