Duplicate DTMF Events - Please Help!
Hello All, I hope someone has experience this issue and can quickly assist me! We are supposed to be going live with a customer in a couple of days and need to find a resolution quickly in order to stay on track... We are using Freeswitch with Sangoma T1 cards to bridge TDM with our internal VoIP system. Call flow is as follows: PSTN --> T1/Sangoma cards --> Freeswitch --> IVR I have configured Freeswitch for RFC2833. When I make a call to the IVR from a landline or cell phone and press "5" at a prompt, FS will sometimes send two separate DTMF events to the IVR. This causes the IVR to receive "55" which then sends the call to the incorrect destination. I can verify with Wireshark that FS is sending two separate RFC2833 events. For some reason, this is exacerbated with heavy call volume (easy to reproduce during load testing). Has anyone experienced this symptom or have any ideas what I can check? Thanks in advance for any assistance!! - Joann ________________________________ NOTICE: The information contained in this electronic mail transmission is intended by Convergys Corporation for the use of the named individual or entity to which it is directed and may contain information that is privileged or otherwise confidential. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email or by telephone (collect), so that the sender's address records can be corrected.
Rfc2833 is for sip, not for analog. Other than that I don't have much to offer. Try using inband only. Brian Foster Endigo Computer LLC Sent from a mobile device. On Jul 16, 2012 6:50 PM, "Joann R DeJesus" <Joann.DeJesus@convergys.com> wrote:
Hello All,****
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I hope someone has experience this issue and can quickly assist me! We are supposed to be going live with a customer in a couple of days and need to find a resolution quickly in order to stay on track…****
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We are using Freeswitch with Sangoma T1 cards to bridge TDM with our internal VoIP system. Call flow is as follows: ****
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PSTN --> T1/Sangoma cards --> Freeswitch --> IVR ****
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I have configured Freeswitch for RFC2833. When I make a call to the IVR from a landline or cell phone and press "5" at a prompt, FS will sometimes send two separate DTMF events to the IVR. This causes the IVR to receive "55" which then sends the call to the incorrect destination. ****
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I can verify with Wireshark that FS is sending two separate RFC2833events. For some reason, this is exacerbated with heavy call volume (easy to reproduce during load testing). Has anyone experienced this symptom or have any ideas what I can check? ****
** **
Thanks in advance for any assistance!! ****
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- Joann****
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------------------------------ NOTICE: The information contained in this electronic mail transmission is intended by Convergys Corporation for the use of the named individual or entity to which it is directed and may contain information that is privileged or otherwise confidential. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email or by telephone (collect), so that the sender's address records can be corrected.
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All TDM links send DTMF tones as in-band only. Your only option for detecting such tones is to use in-band DTMF tone detection. If Sangoma offered a RFC2833 option for their cards, the most likely the card is doing the DTMF detection, which also could lead to a buggy detector on the card. On Mon, Jul 16, 2012 at 8:32 PM, Brian Foster <bdfoster@endigotech.com> wrote:
Rfc2833 is for sip, not for analog. Other than that I don't have much to offer. Try using inband only.
Brian Foster Endigo Computer LLC
Sent from a mobile device.
On Jul 16, 2012 6:50 PM, "Joann R DeJesus" <Joann.DeJesus@convergys.com> wrote:
Hello All,
I hope someone has experience this issue and can quickly assist me! We are supposed to be going live with a customer in a couple of days and need to find a resolution quickly in order to stay on track…
We are using Freeswitch with Sangoma T1 cards to bridge TDM with our internal VoIP system. Call flow is as follows:
PSTN --> T1/Sangoma cards --> Freeswitch --> IVR
I have configured Freeswitch for RFC2833. When I make a call to the IVR from a landline or cell phone and press "5" at a prompt, FS will sometimes send two separate DTMF events to the IVR. This causes the IVR to receive "55" which then sends the call to the incorrect destination.
I can verify with Wireshark that FS is sending two separate RFC2833 events. For some reason, this is exacerbated with heavy call volume (easy to reproduce during load testing). Has anyone experienced this symptom or have any ideas what I can check?
Thanks in advance for any assistance!!
- Joann
________________________________ NOTICE: The information contained in this electronic mail transmission is intended by Convergys Corporation for the use of the named individual or entity to which it is directed and may contain information that is privileged or otherwise confidential. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email or by telephone (collect), so that the sender's address records can be corrected.
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
Join Us At ClueCon - Aug 7-9, 2012
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
Join Us At ClueCon - Aug 7-9, 2012
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
participants (3)
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Brian Foster
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curriegrad2004
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Joann R DeJesus