I have Cisco Voice router 2801 with Two FXO ports and we have terminated two PSTN lines over it. Suddently, we are facing some DTMF detection issues.
Once the Router give us the dial Tone and we tried to dialed the desired numbers but unfortunately some times router recived the wrong digits. Successful ratio is 30% means 3 calls are passing correctly out of 10.
Recived Sample 1: 92233326631116
Recived Sample 2: 9223266
Please help me to sort out this issue. Thanks.
Note: its works perfectly since couple of years.
You are using ip phone or analog phone to dial and are you facing this issue from all phones or any specific phone model ?
I have seen this issue when dialing from analog phone due to different pulse/tone settings on phone.
Suresh, Thanks for your Response.
I am using analog phone in order to reach the router. Below are the call flow
Analog Phone ---> FXO (PSTN Line) ----> Voice Dial Peer VOIP (SIP)
Please let me know if you any settings. I have tried to change dial type to pulse from DTMF but not much improvement.
Already tested via different phones even via different country.
I suspected the issue related to Telco side. It seems they are sending DTMF at very high Decibel level.
If anyone face the same issue, please share the experience.
Thanks a lot!
Please find the below requested info
dial-peer voice 111 voip
session protocol sipv2
session target ipv4:X.X.X.X
timeouts call-disconnect 0
timeouts ringing 30
I tried this but obseverd same behaviour. like below
Recived Sample 1: 2333631696
Recived Sample 2: 923332631696 - correct
Recived Sample 3: 923332631696 - correct
Recived Sample 4: 9233631696
Try putting connection plar opx 923332631696 under the voice port.
If you dont have any POTS dial-peer pointing to FXO port , you need it to make oubound call from that FXO port.
This workaround already implemented but i want to sort out the DTMF issues. we have to dial several different numbers on daily basis.