FXO hangs When call is disconnected before IVR using AA on AIM-CUE Ends

[alanhong]

     Hi All,

                I have a CCME and AIM-CUE ,

Call flow is  PSTN----> CCME FXO-----> IVR(AA on AIM-CUE)----- --->Extention or Operator

Call complete normal if the pattern above is followed.but if a caller calls in and Disconnect the call during IVR withusing any option or completing IVR ,FXO lines hangs until voice-port is shut and no shut is done ,any advise ?

thanks

[acampbell]

Hi

You are encountering a common issue with FXO disconnect.

Please see the following link.

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

You should be able to apply the fixes from here.

Regards

Alex

[alanhong]

Yes but there is no issue on normal call forwarded to Ip phone , only when call is forwarded to AA and user cuts before listening to IVR or press some options key this happens

[acampbell]

Hi,

Can we see the config of the FXO voice ports

Regards

Alex

[alanhong]

Thanks again fro taking time on this

voice class dualtone-detect-params 1

freq-max-deviation 25

freq-max-power 0

freq-min-power 13

freq-power-twist 4

cadence-variation 4

!

!

voice class custom-cptone UAE-CUSTOM-FETEX

dualtone disconnect

  frequency 425

  cadence 375 375

!

!

voice class custom-cptone UAE-CUSTOM-ERICSSON

dualtone disconnect

  frequency 425

  cadence 325 325

!

!

voice class custom-cptone UAE-CUSTOM-SIEMENS

dualtone disconnect

  frequency 425

  cadence 425 325 250 500

!

!

voice class custom-cptone UAE-CUSTOM-ALCATEL

dualtone disconnect

  frequency 425

  cadence 375 375

!

voice-port 0/0/0

supervisory disconnect dualtone mid-call

supervisory custom-cptone UAE-CUSTOM-ALCATEL

supervisory dualtone-detect-params 1

input gain 14

timeouts call-disconnect 5

timeouts wait-release 5

timing hookflash-out 50

connection plar opx 5055

caller-id enable

dial-peer voice 5055 voip

destination-pattern 5055

session protocol sipv2

session target ipv4:172.25.0.5 (ip of CUE AA)

dtmf-relay h245-alphanumeric sip-notify

codec g711ulaw

no vad

[acampbell]

Hi,

Thanks for posting the config.

This looks good to me.

The issue is that although the caller via the FXO has cleared the FXO has not seen a disconnect signal either via a tone or a voltage change.

After looking through this document

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t2/feature/guide/ft_ansds.html#wp171953

I think you should try adding this line of config to your voice port

voice-port 0/0/0

supervisory answer dualtone medium

!

There does appear to be a difference when the call was taken to the IVR -AA rather than an IP phone.

HTH

Alex