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Polycom VTX (analogue) on a UC520

There's probably a really easy way to do this, but I'm trying to get a Polycom VTX Analogue conference phone working on my UC520.

The UC520 has an ISDN PRI (E1) on a VIC card and the standard 4 x FXS, 4 x FXO.

I've plugged the Polycom in to one of the FXS ports and get no dial tone, just a 'slow-fast' signal (not sure if that makes sense!!).

Any help would be greatly apprecitated.

Thanks in advance.

Hall of Fame Super Gold

Re: Polycom VTX (analogue) on a UC520

Change dialtone configuring "cptone" under voice-port. You should also be able to dial.

Community Member

Re: Polycom VTX (analogue) on a UC520

I have the cptone under voice-port set as follows, but I still don't get a dialtone...

voice-port 0/0/0

cptone GB

timeouts ringing infinity

caller-id enable


Hall of Fame Super Gold

Re: Polycom VTX (analogue) on a UC520

Are you trying SCCP controlled ports, is there a DP refering to the same port with application stcapp ?

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