Voice over IP

I know this is probably a silly question but I would like to verify. Devices such as ATAs and VG248s that converts calls to analog, I've notice have only maximum call of 2. Is there a way around this or another way I have analog maximum calls set to...

Hi,The attached file was from cisco output interpreter tool. As a work around, I was trying to load a new IOS image on flash, but it shows "not enough space available" I issue the command show flash (see details below)show flash-#- ED ----type---- --...

Hi,When there is an incoming E1 R2 CAS call directed towards an FXS, the call does not complete. The cisco does collect the digits on the incoming side (CAS) but does not send it to the FXS. Is there any specific configuration that needs to be done f...

My question for you, experts, is that I know IP phone can registered to call manager via IP address, public IP, but can it be registered via hostname (DNS)? If so, how

Pease all i need ios release for router 2811 which support AIM-ATM-Voice-30

I am having an issue only with 7921G phones that when a call is transferred to an ext that is forwarded to a Nextel phone it does not always work. I think this is timing issue because nextels will play a "please wait while the nextel customer is loca...

I have an existing HP Procurve network. We recently acquired a branch off that has a 2801 and a VWIC2 T1 module. The HP routers only need a T1 card. Our PBX is at the main office and rides on its on VLAN. Do I need a PVDM card in the 2801 at this...

Dears. Sorry for my pitty english :D.I have a Cisco 2811 with Cisco Callmanager Express, with two phone (ip communicator) running skinny protocol. I have also a client SIP running in my mobile telephone. The problem is not posible when there is a inc...

I have 2 remote locations connected via frame/atm links currently with no QoS configs and potentially running VoIP. Is AutoQoS the simpliest and/or best solution, for voip communication across the WAN(frame/atm) if no other QoS is required ?Thanks fo...

Suppose you have some pvc configured on a physical interface, or some subinterfaces, point-to-point with an associated pvc.All the traffic comes out from the same physical interface, so same buffer and hardware queue for all pvcs.If you send all voip...

I have an incoming POTS line connection to an FXO port on a 1760 gateway. This POTS line is only providing -24 voltage rather than the normal -48 voltage. This seems to be preventing the FXO interface on the router from sending DTMF that is accepta...

Hi, I am SIP expert developing SIP soft-phone. I have a problem with my SIP traffic going through Cisco 2621 (IOS 12.3(21)) router acting as a NAT. First, the problem is, that I don't have access to that Cisco box. I can only send configuration sugge...

I am seeing many of my Ip communicator users receive Emergency response errors when they first launch the application. this has never happened before we upgraded to ccm 6 then 7 a few months back. How do I troubleshoot this problem?

My Ip phone is not getting disconnected when call disconect from other end.I have configured MGCP on router, i have 4 FXO ports, and default i have loop start signaling confiured for voice port.

we are configuring ss7 on PGW2200 with cisco AS5400 , mtp2 is not stable or flaping attached is debug file taken by terminal mon.any help on this