namely stand-alone videophone question side?

I have video conferencing units that operate as independent"is not registered on vcs or cucm" and natted thorugh firewaal using a public IP, my problem is sometimes call other parties is not successful or sometimes there is no video or audio, im wondering if I called a loopback test address and it worked okey does that mean that my side works fine? because the appearance of making calls, it is difficult to determine which is the origin of the problem

Yes, if a call to an address of loopback test work, then your end is fine.

There are also many other no loopback test sites out there that also lets you prove your end is very good, for example, this is a list of test Polycom numbers: http://support.polycom.com/PolycomService/support/us/support/documentation/video_test_numbers.html

The issue "no video or no audio" is normally firewall related, but even once, if the numbers of test works, is not your end that is at fault. That said, there are some apps out there that require other ports to be opened for work, but that shouldn't affect you if you are dealing with systems of the major publishers.

/Jens

Please note the answers and score the questions as "answered" as appropriate.

Tags: Cisco Support

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