DTMF inbound call issue

[adampcpi]

We keep having this issue where the first DTMF tone that is sent is not being picked up.

 

We are running the latest version of PBXnSIP and using 4 Patton SN4114/JO/EUI devices to convert the PSTN lines for our phone system... Not sure if this is a Patton issue or a PBXnSIP issue but one thing to note is I have noticed that when placing an outbound call the outbound call is definatly quieter than placing a extension call...

 

It just seems to be missing the first digit of the extension people are trying to reach and they get the "This extension number does not exists" and they have to dial it again..

 

Example here is a caller dialing into our system and trying to dial 3018

 

[8] 2011/07/15 12:20:55: Packet authenticated by transport layer

[7] 2011/07/15 12:20:56: Received RFC4733 DTMF on codec 101

[6] 2011/07/15 12:20:56: Received DTMF 0

[8] 2011/07/15 12:20:56: Packet authenticated by transport layer

[6] 2011/07/15 12:20:56: Received DTMF 1

[8] 2011/07/15 12:20:56: Packet authenticated by transport layer

[6] 2011/07/15 12:20:56: Received DTMF 8

[8] 2011/07/15 12:20:57: Packet authenticated by transport layer

[8] 2011/07/15 12:20:59: Last message repeated 11 times

[8] 2011/07/15 12:20:59: Attendant: Timeout (press)

[8] 2011/07/15 12:20:59: Play audio_en/aa_not_existing.wav space20

[8] 2011/07/15 12:21:00: Packet authenticated by transport layer

[8] 2011/07/15 12:21:03: Last message repeated 7 times

[8] 2011/07/15 12:21:03: Play space20

[8] 2011/07/15 12:21:04: Packet authenticated by transport layer

[8] 2011/07/15 12:21:05: Last message repeated 2 times

[6] 2011/07/15 12:21:05: Received DTMF 3

[8] 2011/07/15 12:21:05: Packet authenticated by transport layer

[6] 2011/07/15 12:21:05: Received DTMF 0

[8] 2011/07/15 12:21:05: Packet authenticated by transport layer

[6] 2011/07/15 12:21:06: Received DTMF 1

[8] 2011/07/15 12:21:06: Packet authenticated by transport layer

[8] 2011/07/15 12:21:06: Last message repeated 2 times

[6] 2011/07/15 12:21:06: Received DTMF 8

[8] 2011/07/15 12:21:06: Call state for call object 1173: alerting

 

Any help with this would be appreciated...

[pbx support]

Based on this log, the PBX did not see the digit 3. Do you have the packet trace (wireshark/tcpdump) for this type of call? That will tell us if the first digit is dropped by PBX or something before PBX.