IP Telephony and Phones

Hi all,Can anyone tell me what the difference between call manager 7.1 and 8.0 ? Or, is there any url I can find some information ?ThanksRegardsLeung Che Man

The main circuit at the remote office is a 12Mb provisioned DS3 link through the layer 3 switch. When this circuit goes down,the vpn tunnels on the router will route all traffic through the tunnel except tftp traffic to register the phones. Pings and...

Hi Netpros.I have two faxes in the same office which are connected to different ATA boxes. The faxes have 4 digit extensiton numbers fax 1 = 5286 fax 2= 5288I have a H.323 gateway with the following dial peer config and translation patterndial-peer v...

I have got a voice over ip project but dont know  how to decide the right product and i am good at implementing and deploying there are 500 users and 100 voice mails with exchange already in the network and establish network  in single site design Pl...

Hi All,Randomly we are facing a problem of call drop. We have checked on the gateway and pri level there are no errors.I have collected the sdi traces from call manager. In the traces i found below error for dropped calls,05/01/2010 16:27:29.590 CCM|...

I have a VG224 taht is registered with my Call Manager 7.x via SCCp. The issue that I have a total of 15 ports configured and 6 are not showing registered. They are in the same device pool are copies on each other except for the extensions used. What...

Does CallManager 7.1 support RFC 3856 SIP presence on third party SIP phones?I have some Polycom phones I am trying to get the BLF working, and they use the RFC for the BLF. Thanks,Pat

Is there a command, or some way to determine, whether the MOH in a branch is coming from my router or my CUCM server?I have branches complaining that their phones are displaying a "high call volume" message on the display, they hear a couple of beeps...

Hi,i'm trying to using the software Cisco IP Communicator 7.0.3 not in the common way (as a standalone phone with his own DN) but to control a physical Cisco IP phone. I explain:i need to configure IP Communicator to connect and manage the physical p...

Help required i have setup a small home network to practice routing ip phone calls over a ipsec vpn between a cisco router and a cisco uc520 with mixed success to help with my question i have attached a network diagram. i am able to create a site to ...

Hi all,Wondering what an industry standard is for estimating busy hour concurrent call maximums for a large organisation?Is there a generally accepted standard ratio for number of users to maximum number of concurrent calls?E.g. If you have an office...

Hello everyone,Does anyone have any real world experience linking multiple sites together over a VPN using the Comcast network?  I know there is no QoS available over the public Internet but the hope is that by staying on the Comcast network and with...

Hi,I have few question about upgrading a call manager.I'm currently running 2 CCM (3.3(5)src2), one publisher and one suscriber, yeah I know it's old stuff. In our environnement we have alot of 7910 IP phone and some 7960, 7940, 7912G, 7911G ip phone...