We are getting into a new project implementing  CUCM 8.5 cluster with a large number of phones? The phones we are considering  are 7965,7962,7942 and 6921. We will have few SIP trunks. I was thinking to try  everything in the lab environment and I ha...

Hi,The customers bought SX20 package with multisite option and they want to work as stand-alone device. What ports do I have to forward to SX20 codec on the firewall. Can they use SIP and H323 for calling? I tried to forward tcp/udp 5060 port to the ...

How to hide caller ID for extensions when they are making outgoing call so that called person gets private number o display for example? Can this be done on CME or the provider has to do this?Can it be done for all extension and also only for certain...

We have internet bandwidth 4/4 Mbps on outside interface. To inside  interface are coming few internal network. How to limit internet  bandwith usage for let's say 10.1.103.0/24 network to use 100/100 kbps.  We tried as shown below but without luck. ...