What needs to be done to insure that an IP phone can function through a firewall or NAT? I have one working as far as dialing and connecting, but the actual voice traffic is not making it either way. I can use a VPN client and Softphone, but I want...

I have two Callmanagers, both are publishers. One is our main one and one is at another location which was our initial test site. We want to move those 20 users from the test site to the main Callmanager (centralized call-processing) and make their...

I have a centralized CallManager with 7 sites. Being able to call out locally to any calling area from any site over our WAN is great. However, I have one site that uses 7-digit dialing most of the time. The problem lies where sometimes they have ...

We are doing router to router VPN using the 2620. For Internet access, the users simply go out the same router using NAT.We have an application that runs a VPN client on a workstation and connects using IPSec. This workstation sits behind the NAT r...

We are slowly migrating from a Lucent Definity G3 to Cisco Callmanager. When a call from an IP SoftPhone is made to someone in the Lucent system, the called party's name is fed back to the IP Softphone's display to let the caller know who he/she is ...