Unity Express not detecting call termination with FXO port

[mark.mcsherry]

Hi,

I have a CME box with Unity Express and an FXO port connected to a standard PSTN line.

When I call in from an external source, it connects to the Unity Express fine and takes a message.

When you hang up, Unity Express doesn't detect this properly and records an egaged tone until it times out. The PSTN line is tied up while this happens.

Any ideas?

Thanks,

Mark

voice-port 0/2/0

connection plar opx 123456

station-id name PSTN_Connection

station-id number 123456

caller-id enable

[Markus Schneider · Accepted solution]

That has to do with your FXO connection, not unity express. You can see this with a 'debug ccsip message'. Unity express will never get a SIP BYE message when the PSTN side is hung up. Take a look at:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121x/121xm/121xm_5/dt_dscon.htm

and

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml

[mark.mcsherry]

Hi marschne,

That seems to have done the trick. It does still record a second of engaged tone, but its a lot better now,

Many thanks,

Mark

voice-port 0/2/0

supervisory disconnect dualtone mid-call

cptone AU

timeouts wait-release 1

connection plar opx 12345

impedance complex1

station-id name PSTN_Connection

station-id number 12345

caller-id enable

[gpulos]

please see the following link for the Understanding FXO Disconnect Problem:

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml

if still an issue, post your config and we can verify if any other problems possibly.