Internal IP extensions only - tons of static

[bjitima]

Hello,

We just got a new Altigen Alti-Office1G system with the IP 710 telephones. We hooked the system up, grounded it, registered our licenses, and created two test extensions. When we dial extension to extension, there is a large amount of static. It isn't on EVERY single call this bad, but 95% of test calls. We don't have our trunks in from Verizon yet, so we aren't hooked up to the point we can test call off location.

We can call voice mail and it is extremely clear. I'm not sure why it would sound bad on ext to ext and not voice mail, but we have yet to have a really bad quality voice mail test call.

Does anyone have any ideas as to what could be causing such drastically bad sound quality? We have tried changing power sources, switches, telephones, and cables. We have also moved the IP board to other PCI slots as well as moving the MVIP cable a bit.

Thanks,
Ben

 

[Altitech]

This sounds like a possible board termination/MVIP issue. The end boards should be terminated (dip switches on the top edge of the board set to ON), and the boards in between them should not be terminated.

Also make sure your MVIP cable overhangs the end boards by a couple of connectors. This will help proide extra resistance and make sure the boards are properly terminated.

Here is a link to the current board install guide:

http://www.altigen.com/system_manuals/5-0/Quick_Instal_Guide_50.pdf

If all that fails, your installing dealer should call AltiGen to get some assistance with the issue.

 

[bjitima]

Just found out that it was a stupid minor mistake that could possibly have caused major problems. We did have the boards terminated correctly. However, the MVIP cable was daisy chained all the way across...including the Motherboard riser card. It was only supposed to be plugged into the telephone related boards and not (as the diagram refers to the board) the CPU.

So everything appears to be up and running well now.