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Cat4224 - 8FXS always get a busy tone on all 8 FXS ports

I have 2 Cat4224, and I get a busy tone from all 8 FXS ports.

All the ports are up (no shut).

I have tried with different cptone setting (us, mx,...)

The IOS version I have in one Cat4224 is 12.1(5)YE3 and in the other is 12.1(5)YE5

I verified the pin-out of my TELCO-RJ21 cable and all is as it is specified on the web.

What could be the problem?

2 REPLIES
Cisco Employee

Re: Cat4224 - 8FXS always get a busy tone on all 8 FXS ports

First, check the pots dial-peers and make sure you don't have direct-inward-dial. This will cause a busy signal when going off-hook

Next, check for any connection plar statements that go to non-existent numbers.

If this does not affect the problem, please repost with voice port and dial-peer configuration.

Thanks,

Dan Keller

Cisco Systems

Cisco Employee

Re: Cat4224 - 8FXS always get a busy tone on all 8 FXS ports

Also, you can try running debug vpm signal and go off-hook on one phone and paste the output.

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