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 wanted to use a real IP phone without having to deploy VPN hardware.
If your destination call spans across multiple ISP's then there is nothing you are going to be able to do from a QoS perspective to give strict priority to voice. LLQ and other queuing strategies need to be end to end...in other words, once you hit your first router hop, you'll loose the QoS in place because you don't have control over internet routers. If it is with a single provider, you may be able to work with them on giving you the QoS that UDP voice traffic needs.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...