FXO port doesn't detect disconnecting originating call

[szamani]

hi, I have a simple FXO to FXS connection on one router and my problem is when i call in to FXO port and it is forwarded to one FXS port, the phone connected to FXS is ringing but if i disconnect the call at source, the phone continue ringing and the phone number related to FXO port remain busy. Thank you in advance.

Saeed Zamani.

[jtufail]

This is FXO superisory disocnnect issue and is well documented in the following URLs:

Understanding the problem+workarounds:

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

Additional:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_guide09186a00801601ac.html

I hope that helps.

Javed