>
> Hi Joshua,
> Thank you for looking into this.
> Their response IS based on traces I've sent them. Attached is such trace
in text format (server IP has been changed to 111.111.111.111). Some
repeating RTP packets has been truncated.
You can see that after the 200 OK SSRC is sent from the server to the phone
as '0x0'. The same has happened with G729 codec.
> Let me know if you need the full trace or anything else from my side.
> I should also mention that this is Asterisk version 1.8.12.1
> Thank you
> Harel
> --
>
On Tue, Nov 14, 2017, at 09:14 AM, Harel Cohen wrote:
> > Hello,
> > I have a problem where on an outgoing call a Grandstream phone
> > (GXP2130) closes the incoming voice stream about 1 second into the
> > call (the remote party hears the Grandstream, the Grandstream doesn't
> > hear thr remote party). I have verified with logs and traces that this
> > is not a NAT issue or any other network-related problem. All incoming
> > RTP packets arrive at the phone on the correct port etc. as declared in
the SDP.
> > I opened a ticket with Grandstream and they replied: "
> >
> > *the phone starts receiving RTP with SSRC =0x0 which is wrong".*
> >
> > Is this an Asterisk problem or the phones? Is this something that can
> > be fixed on the Asterisk side?
>
Asterisk would be sending the RTP to the Grandstream. I'd suggest getting a
packet capture using tcpdump or wireshark to confirm what they've said
though. I just looked at the code and I don't see a way that we'd ever have
the SSRC be 0.
>
Cheers,
>
--
> Joshua Colp
> Digium, Inc. | Senior Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US Check us out at:
www.digium.com & www.asterisk.org
>
>
No. Time SourceDestination Protocol
Length Info
1 0.00
1224
Frame 1: 1224 bytes on wire (9792 bits), 1224 bytes captured (9792 bits)
This frame is marked as ignored
No. Time SourceDestination Protocol
Length Info
2 0.078267 195.191.156.50192.168.10.144SIP 631
Status: 401 Unauthorized |
Frame 2: 631 bytes on wire (5048 bits), 631 bytes captured (5048 bits)
Ethernet II, Src: 00:ff:6b:60:2c:4c (00:ff:6b:60:2c:4c), Dst: Grandstr_a7:a0:fa
(00:0b:82:a7:a0:fa)
802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 0
Internet Protocol Version 4, Src: 195.191.156.50, Dst: 192.168.10.144
User Datagram Protocol, Src Port: 55060, Dst Port: 21321
Session Initiation Protocol (401)
No. Time SourceDestination Protocol
Length Info
3 0.090271 192.168.10.144195.191.156.50SIP 431
Request: ACK sip:0035699143...@sip1.mayorcom.com:55060 |
Frame 3: 431 bytes on wire (3448 bits), 431 bytes captured (3448 bits)
Ethernet II, Src: Grandstr_a7:a0:fa (00:0b:82:a7:a0:fa), Dst: 00:ff:6b:60:2c:4c
(00:ff:6b:60:2c:4c)
Internet Protocol Version 4, Src: 192.168.10.144, Dst: 195.191.156.50
User Datagram Protocol, Src Port: 21321, Dst Port: 55060
Session Initiation Protocol (ACK)
No. Time SourceDestination Protocol
Length Info
4 0.120599 192.168.10.144195.191.156.50SIP/SDP
1427 Request: INVITE sip:0035699143...@sip1.mayorcom.com:55060 |
Frame 4: 1427 bytes on wire (11416 bits), 1427 bytes captured (11416 bits)
Ethernet II, Src: Grandstr_a7:a0:fa (00:0b:82:a7:a0:fa), Dst: 00:ff:6b:60:2c:4c
(00:ff:6b:60:2c:4c)
Internet Protocol Version 4, Src: 192.168.10.144, Dst: 195.191.156.50
User Datagram Protocol, Src Port: 21321, Dst Port: 55060
Session Initiation Protocol (INVITE)
No. Time SourceDestination Protocol
Length Info
5 0.200309 195.191.156.50192.168.10.144SIP 576
Status: 100 Trying |
Frame 5: 576 bytes on wire (4608 bits), 576 bytes captured (4608 bits)
Ethernet II, Src: 00:ff:6b:60:2c:4c (00:ff:6b:60:2c:4c), Dst: Grandstr_a7:a0:fa
(00:0b:82:a7:a0:fa)
802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 0
Internet Protocol Version 4, Src: 195.191.156.50, Dst: 192.168.10.144
User Datagram Protocol, Src Port: 55060, Dst Port: 21321
Session Initiation Protocol (100)
No. Time SourceDestination Protocol
Length Info
6 1.742472 195.191.156.50192.168.10.144SIP/SDP 883
Status: 183 Session Progress |
Frame 6: 883 bytes on wire (7064 bits), 883 bytes captured (7064 bits)
Ethernet II, Src: 00:ff:6b:60:2c:4c (00:ff:6b:60:2c:4c), Dst: Grandstr_a7:a0:fa
(00:0b:82:a7:a0:fa)
802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 0
Internet Protocol Version 4, Src: 195.191.156.50, Dst: 192.168.10.144
User Datagram Protocol, Src Port: 55060, Dst Port: 21321
Session Initiation Protocol (183)
No. Time SourceDestination Protocol
Length Info
