On the very latest GIT and previous , Freeswitch doesn't seem to set the first Marker Bit to true on an rfc2833 event on the bleg of a call out to a gateway
on the A-leg the first event from my UA to Freeswitch is correct with duration as 0 and Marker bit set to True. Then the second event increments the duration and Market bit is set to false.
but on the B-leg from freeswitch to the cisco gateway the first event has duration 80 (may or may not be a problem) but the Marker bit is set to False which must be wrong ? Duration then increments and Marker bit remains false.
I also tried <param name="manual-rtp-bugs" value="START_SEQ_AT_ZERO"/> to make the duration start at zero but it seemed to have no effect.
ALEG from SIP UA to FREESWITCH
No. Time Source Destination Protocol Length Info
5254 23 10.0.47.110 10.50.47.30 RTP EVENT 60 Payload type=RTP Event, DTMF One 1
Frame 5254: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
Ethernet II, Src: Sonicwal_3d:2b:1c (00:06:b1:3d:2b:1c), Dst: Vmware_ab:60:ec (00:0c:29:ab:60:ec)
Internet Protocol Version 4, Src: 10.0.47.110 (10.0.47.110), Dst: 10.50.47.30 (10.50.47.30)
User Datagram Protocol, Src Port: 49194 (49194), Dst Port: 21374 (21374)
Real-Time Transport Protocol
[Stream setup by SDP (frame 1122)]
[Setup frame: 1122]
[Setup Method: SDP]
10.. .... = Version: RFC 1889 Version (2)
..0. .... = Padding: False
...0 .... = Extension: False
.... 0000 = Contributing source identifiers count: 0
1... .... = Marker: True
Payload type: telephone-event (101)
Sequence number: 26364
[Extended sequence number: 91900]
Timestamp: 133920
Synchronization Source identifier: 0x03bf0676 (62850678)
RFC 2833 RTP Event
Event ID: DTMF One 1 (1)
0... .... = End of Event: False
.0.. .... = Reserved: False
..00 1010 = Volume: 10
Event Duration: 0
ALEG SECOND EVENT FROM SIP UA TO FREESWITCH
No. Time Source Destination Protocol Length Info
5255 23 10.0.47.110 10.50.47.30 RTP EVENT 60 Payload type=RTP Event, DTMF One 1
Frame 5255: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
Ethernet II, Src: Sonicwal_3d:2b:1c (00:06:b1:3d:2b:1c), Dst: Vmware_ab:60:ec (00:0c:29:ab:60:ec)
Internet Protocol Version 4, Src: 10.0.47.110 (10.0.47.110), Dst: 10.50.47.30 (10.50.47.30)
User Datagram Protocol, Src Port: 49194 (49194), Dst Port: 21374 (21374)
Real-Time Transport Protocol
[Stream setup by SDP (frame 1122)]
[Setup frame: 1122]
[Setup Method: SDP]
10.. .... = Version: RFC 1889 Version (2)
..0. .... = Padding: False
...0 .... = Extension: False
.... 0000 = Contributing source identifiers count: 0
0... .... = Marker: False
Payload type: telephone-event (101)
Sequence number: 26365
[Extended sequence number: 91901]
Timestamp: 133920
Synchronization Source identifier: 0x03bf0676 (62850678)
RFC 2833 RTP Event
Event ID: DTMF One 1 (1)
0... .... = End of Event: False
.0.. .... = Reserved: False
..00 1010 = Volume: 10
Event Duration: 160
BLEG FIRST EVENT FROM FREESWITCH TO CISCO
No. Time Source Destination Protocol Length Info
5329 23 10.50.47.30 10.50.47.19 RTP EVENT 58 Payload type=RTP Event, DTMF One 1
Frame 5329: 58 bytes on wire (464 bits), 58 bytes captured (464 bits)
Ethernet II, Src: Vmware_ab:60:ec (00:0c:29:ab:60:ec), Dst: 64:9e:f3:11:ff:60 (64:9e:f3:11:ff:60)
Internet Protocol Version 4, Src: 10.50.47.30 (10.50.47.30), Dst: 10.50.47.19 (10.50.47.19)
User Datagram Protocol, Src Port: 24034 (24034), Dst Port: 18768 (18768)
Real-Time Transport Protocol
[Stream setup by SDP (frame 1113)]
[Setup frame: 1113]
[Setup Method: SDP]
10.. .... = Version: RFC 1889 Version (2)
..0. .... = Padding: False
...0 .... = Extension: False
.... 0000 = Contributing source identifiers count: 0
0... .... = Marker: False
Payload type: telephone-event (101)
Sequence number: 24716
[Extended sequence number: 90252]
Timestamp: 158240
Synchronization Source identifier: 0x57e5d7a1 (1474680737)
RFC 2833 RTP Event
Event ID: DTMF One 1 (1)
0... .... = End of Event: False
.0.. .... = Reserved: False
..00 0111 = Volume: 7
Event Duration: 80
BLEG SECOND EVENT FROM FREESWITCH TO CISCO
No. Time Source Destination Protocol Length Info
5331 23 10.50.47.30 10.50.47.19 RTP EVENT 58 Payload type=RTP Event, DTMF One 1
Frame 5331: 58 bytes on wire (464 bits), 58 bytes captured (464 bits)
Ethernet II, Src: Vmware_ab:60:ec (00:0c:29:ab:60:ec), Dst: 64:9e:f3:11:ff:60 (64:9e:f3:11:ff:60)
Internet Protocol Version 4, Src: 10.50.47.30 (10.50.47.30), Dst: 10.50.47.19 (10.50.47.19)
User Datagram Protocol, Src Port: 24034 (24034), Dst Port: 18768 (18768)
Real-Time Transport Protocol
[Stream setup by SDP (frame 1113)]
[Setup frame: 1113]
[Setup Method: SDP]
10.. .... = Version: RFC 1889 Version (2)
..0. .... = Padding: False
...0 .... = Extension: False
.... 0000 = Contributing source identifiers count: 0
0... .... = Marker: False
Payload type: telephone-event (101)
Sequence number: 24717
[Extended sequence number: 90253]
Timestamp: 158240
Synchronization Source identifier: 0x57e5d7a1 (1474680737)
RFC 2833 RTP Event
Event ID: DTMF One 1 (1)
0... .... = End of Event: False
.0.. .... = Reserved: False
..00 0111 = Volume: 7
Event Duration: 160