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New Member

Cisco FXO Port disconnect with DMS-10

Hello,

We have a situation where FXO ports are connected to DMS-10 at telco end.  DMS-10 doesn't send out any disconnect tone or power denial.  Is there a way to detect on CISCO ISR that remote party has disconnected call?  Is there a way to disconnect a call after no activity on line after certain amount of time? CO has confirm that they have increase silent on lines to give ISR chance to disconnect the call.

Thank You.

10 REPLIES

Re: Cisco FXO Port disconnect with DMS-10

Please share your config on the fxo ports setup

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Voice CCIE #37771
New Member

Cisco FXO Port disconnect with DMS-10

voice-port 0/0/0

trunk-group BNS-10207 7

translation-profile incoming 1111

cptone CA

timeouts initial 10

timing hookflash-out 50

connection plar opx 1900

caller-id enable

Re: Cisco FXO Port disconnect with DMS-10

timer media-inactive To enable the timer for media inactivity detection using the digital signal processor (DSP) (based on RTP as the only criterion) and to configure a multiplication factor based on the real-time control protocol (RTCP) timer interval, use the timer media-inactive command in gateway configuration mode. To reset to the default, use the no form of this command. timer media-inactive multiple no timer media-inactive multiple

When the timer media-inactive command is used, the gateway uses the inactivity timer as a combination of the timer media-inactive command and the ip rtcp report interval command. The timer media-inactive command uses DSP statistics. This capability is based on the configuration of callfeature parameters using application command-line interface (CLI) to enable control. The media are considered inactive only if there is no transfer of RTP packets in the send direction and no RTP packets in the receive direction. If RTP is present in either the send or receive direction, it is considered active. In this mode, DSP filters out any comfort noise packets, and the presence of any comfort noise packet is considered inactivity in either direction. The multiple argument (or multiplication factor) is multiplied by the interval that is set using the ip rtcp report interval command. This command configures the average interval between successive RTCP report transmissions for a given voice session. For example, if the value argument is set to 25,000 milliseconds, an RTCP report is sent every 25 seconds, on average. If no RTP packets are received during the calculated interval, the call is disconnected. The gateway signals the disconnect to the VoIP network and the time-division multiplexing (TDM) network so that upstream and downstream devices can clear their resources.

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Voice CCIE #37771

Re: Cisco FXO Port disconnect with DMS-10

http://www.cisco.com/en/US/docs/ios/voice/voiceport/configuration/guide/vp_tune_an-dig_vps_ps6350_TSD_Products_Configuration_Guide_Chapter.html



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Voice CCIE #37771
New Member

Cisco FXO Port disconnect with DMS-10

Hello Thank you for relpy...

I have tried this and doesn't work.  When remote end hangs up after hearing AA, call doesn't get cut off and AA trasfers call to hunt-group as it doesn't detect any input from user.  If no one picks up on hunt-group it goes to GDM and leaves a 4 min lond dead-air message.  Once VM terminates the call, call teardown happens normally.

Re: Cisco FXO Port disconnect with DMS-10

Do you make use of b acd for AA

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Voice CCIE #37771
New Member

Cisco FXO Port disconnect with DMS-10

AA script on CUE..below is configuration of Dial-peer pointing to CUE AA pilot.  Seems like RTCP is still active one way from CUE AA to user but not in other direction, so it never kicks RTCP media-inactive command. 

dial-peer voice 201 voip

description *** CUE VM Pilot ***

destination-pattern 1901

session protocol sipv2

session target ipv4:10.209.235.195

mailbox-selection last

dtmf-relay sip-notify

codec g711ulaw

ip qos dscp cs3 signaling

no vad

Re: Cisco FXO Port disconnect with DMS-10

https://supportforums.cisco.com/thread/2143828

This looks closer to your issue with a solution

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Voice CCIE #37771
New Member

Cisco FXO Port disconnect with DMS-10

Thank you for your reply...I tried to test that but still no change.  I captured pcm.dat file and see there is disconnect tone coming from Telco, there is a silence on line for a few sec.  I can't seem to find a work around.....

New Member

Cisco FXO Port disconnect with DMS-10

Here is my final config....

voice class dualtone-detect-params 1

freq-max-deviation 50

voice class custom-cptone DISC_CAN

dualtone disconnect

  frequency 480 620

  cadence 500 500

voice-port 0/0/0

supervisory disconnect dualtone mid-call
supervisory dualtone-detect-params 1
timeouts wait-release 1

supervisory custom-cptone DISC_CAN

Thank You.

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