IP Telephony and Phones

The call flow is PSTN-GW -------SIP------->GW1-------SIP---->GW2-------SIP-Trunk------> CUCM.When the call is being forwarded to an AA upon transfer the call gets dropped. I see a lot of re-invites taking place and the CCSIP message output shows a lo...

Hi,We have a branch office connected to Head Office Via VPN. Both ends have Public IP. Call Manager, Unity Express, Voice Gateway are @ HO.The IP Phones can register automatically but the problem is that Only HO can hear to the voice of the users fro...

Hi all, I am looking into setting up an intercluster trunk with a sister company who's running CUCM 8.x. The challange I am seeing is that the sister company is using 3-digit extensions x.x.x and I am using 4-digit extensions x.x.x.x. I am seeing ext...

Hi Guys,Please explain the "Loopback Dial-peer" with any example.Regards,        Sachin          

Hi , I am using cisco jabber , in the left bottom corner I see red X and I  get the error  cti server is undefined .what may be the problem ?                  

Good day all,I have to upgrade from ccx7 to 9 but I can not login to the web GUI of the CC as it has a corrupted SQL database. What I would like know is what licenses do I need to get to do the upgrade in terms of (high availibilty) as we have a sub ...

Hi,             When 9971 (Sip9971.9-3-2-10) running CM cluster (8.6.2.23900-10) with video enabled, can't connect to exchange 2010 UM,have to disable  Cisco camera and Video capabilities from phone configuration to make voice mail work, attached is ...

                   I have a client who is currently running consol version 6.1(0_c) server version 6.1(0_a) on Windows XP. They have a requirement to upgrade to Windows 7. Will this version of the attendant client run happily or will it need to be up...

I have recently setup a Cisco 1751-v router with a VIC2-2FXO card and a BT phone line, however after several attempts I am unable to successfully obtain the caller ID. The IOS version is 12.4(19).The configuration of the voice-port is as followsvoice...

Hi Guys ! Hi guys, if I have a problem with my DHCP server and the lease time of the ip phones reach their limit, the IP phones will keep trying ... trying and trying to get a new ip address right ? There is a limit about this tries ? If the Ip Phone...