Voice over IP

I have a unity installation that is using Unified Messaging to an off box Exchange server. My customer has recently installed a new Active Directory Domain with a new Exchange organization. Currently there is a trust between the two ADs but they ar...

Hello,My question relates to using the 2431 IAD with a Broadsoft switch. I'm having issues with calls dropping when using some of the "flash features", particularly Flash 3-way and Flash Hold.These features work just fine if the call originates from...

Hi All,Config: 2821, IOS 12.3(11)T5, 2 Channelized T1/PRI portsI setup one T1/PRI controlled by CallManager. The linecode is b8zs. But the controller T1 goes up and down occasionally with a reason (AIS detected). Any idea? Thanks a lot.==============...

3845 12.3(11)T7Currently have 3 x E1 PRI terminating for Outbound and Inbound on our 3845.I have configured 3 x Preference POTS dial-peers for redundancy/load balancing purposes.Not sure why, but my first preference POTS dial peers Outbound Status is...

Hi all, do you know if Cisco Router support Fax isdn?What is the right Vic module?Vic2-2bri-nt/te?Thanks.

i'm trying to configure my ISDN BRI NT/TE voice interface card (VIC-2BRI-NT/TE) on router 3825 to link to my PSTN provider. This must allow my Cisco IP phones to pass call to the PSTN through my call manager 4.1.I suscribe to two isdn line. The provi...

Please,If i have to use sip or H323 which signaling method is more scalable, easy to implement and provide good quality ?Best regards .

I am trying to route calls from cme to ccm through a gatekeeper. Everything seems to be working fine except when I test the calls from the router using csim start I cannot get the IP phone on the ccm side to ring. I have tech prefix set to 1# on ccm ...

HiI have 1 gatekeeper and multiple GW i want to be able to use one gw as a primary route but if this fails use the second one.I have configured the gatekeeper with gw-priority as below but if the first gateway is still up and working and the call fai...

Which of Cisco's product line up is in direct competition with Mediaring's Voizbridge?

Hi, I have a Cisco 3640 that is configured to AAA with a Talking SIP Gateway. The TSIP Server is supposed to authenticate the called from the Cisco and redirect the Cisco to the outbound route, which is a Nextone MSW. All works well, except when the ...

Hi all,is anybody using LNP QoR on PGW? What are the experiences with this? How did you implement it?Regards,Ivan

Hi,does anyone know if there is a way to force a 3660 router (IOS 12.4T) to include the SDP info in the SIP INVITE message?So far the SDP info (codec, port, etc.) is only sent in later messages like ACK.Thanks for the helpGunnar

Hello,I want to know if there are any cisco technicians or anyone with experience on setting up a voip network. We have the As5350 and are looking for a technician to configure,test and install all the software in the network.Thanks for any help.

Hi AllWe have a national backbone with Cisco As5400, As5350 , 2600 etc and Alcatel 7515 Gws. But our softswitch does not support both (T.38 and passthrough)fax protocol at the same time. So we often have to change in all media gateways the IOS images...