SIP to SIP. Fast Busy Tone at Source After Destination Hangs Up. On AG4124.

[loun80]

Apologies if I'm in the wrong forum.  I couldn't find anything relating to analog gateways.

I'm trying to prevent a fast-busy tone at a source after the destination hangs up.

Scenario:

Source is an intercom unit connected to an analog extension on an AG port.

The source dials a destination extension on another AG port.

The destination is connected to a phone.

The person at the destination answers the phone.

After the conversation, the person at the destination hangs up (on-hook).

The source now gets a fast-busy tone for 2 minutes before it eventually disconnects.

How can I get the source to disconnect once it detects on-hook at the destination?
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[dilkie]

you'd have to examine the SIP exchanges in order to understand what's going on. There are lots of knobs and buttons that need to align and be supported for endpoints.. It's a horrible protocol. Without a wireshark trace of the sip flows, you're just guessing.

[sarond]

This may also be how the intercom handles the tones. Usually they will detect busy/disconnect tone and hangup the call, this doesn't seem to be happening.

Not sure if you can change the tones on the analogue gateway, I haven't had a chance to look at one yet.