I'm using Asterisk on a open server (no firewall or NAT) and trying to communicate with a Grandstream BudgeTone 102 SIP phone which is behind NAT. The BudgeTone is at firmware level 1.0.4.30 and Asterisk is from CVS about a week ago. My problem is that I'm only getting half-duplex communication -- I can hear voice from the Asterisk server but the server does not understand any voice from me. From the console "sip debug" shows that the SIP part is working fine and DTMF via SIP INFO works.
I've struggled with this for a few days now and can't figure out the cause. The only symptoms I've found are: (1) When I make a call the console spits out the following errors several times per minute: WARNING[-1220854864]: File rtp.c, Line 375 (ast_rtp_read): RTP Read error: Resource temporarily unavailable (2) An ethereal trace reveals that incoming RTP packets have failed UDP checksums (all packets have the same checksum of 0xb38f). I don't see anything else irregular, like unreachable ports. My sip.conf contains: [test] type=friend username=test secret=12345 host=dynamic nat=yes qualify=1000 dtmfmode=info disallow=all allow=ulaw allow=alaw canreinvite=no On the NAT'ed side I have the BudgetTone set up to use STUN and ports 5060 for SIP and 19000 for RTP. The firewall that performs NAT forwards ports 5060 and 19000-19100 UDP to the phone. An ethereal snapshot looks like: 1.1.1.1 = Asterisk server 2.2.2.2 = Public IP where the BudgeTone is 10.0.3.205 = Private IP of BudgeTone Frame 211 (214 bytes on wire, 214 bytes captured) Ethernet II, Src: 00:06:29:ce:5f:f2, Dst: 00:01:c7:0b:70:22 Destination: 00:01:c7:0b:70:22 (Cisco_0b:70:22) Source: 00:06:29:ce:5f:f2 (Ibm_ce:5f:f2) Type: IP (0x0800) Internet Protocol, Src Addr: 1.1.1.1 (1.1.1.1), Dst Addr: 2.2.2.2 (2.2.2.2) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) Total Length: 200 Identification: 0x0000 (0) Flags: 0x04 Fragment offset: 0 Time to live: 64 Protocol: UDP (0x11) Header checksum: 0x2538 (correct) Source: 1.1.1.1 (1.1.1.1) Destination: 2.2.2.2 (2.2.2.2) User Datagram Protocol, Src Port: 13364 (13364), Dst Port: 19000 (19000) Source port: 13364 (13364) Destination port: 19000 (19000) Length: 180 Checksum: 0xdf43 (correct) Real-Time Transport Protocol 10.. .... = Version: RFC 1889 Version (2) ..0. .... = Padding: False ...0 .... = Extension: False .... 0000 = Contributing source identifiers count: 0 0... .... = Marker: False .000 1000 = Payload type: ITU-T G.711 PCMA (8) Sequence number: 45554 Timestamp: 16480 Synchronization Source identifier: 1847249288 Payload: E4E4E5FAF9FDF0F6F5C2C5DFD0575D58... Frame 212 (214 bytes on wire, 214 bytes captured) Ethernet II, Src: 00:01:c7:0b:70:22, Dst: 00:06:29:ce:5f:f2 Destination: 00:06:29:ce:5f:f2 (Ibm_ce:5f:f2) Source: 00:01:c7:0b:70:22 (Cisco_0b:70:22) Type: IP (0x0800) Internet Protocol, Src Addr: 2.2.2.2 (2.2.2.2), Dst Addr: 1.1.1.1 (1.1.1.1) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) Total Length: 200 Identification: 0xe398 (58264) Flags: 0x00 Fragment offset: 0 Time to live: 233 Protocol: UDP (0x11) Header checksum: 0xd89e (correct) Source: 2.2.2.2 (2.2.2.2) Destination: 1.1.1.1 (1.1.1.1) User Datagram Protocol, Src Port: 19000 (19000), Dst Port: 13364 (13364) Source port: 19000 (19000) Destination port: 13364 (13364) Length: 180 Checksum: 0xb38f (incorrect, should be 0x1dc4) Real-Time Transport Protocol 10.. .... = Version: RFC 1889 Version (2) ..0. .... = Padding: False ...0 .... = Extension: False .... 0000 = Contributing source identifiers count: 0 0... .... = Marker: False .000 1000 = Payload type: ITU-T G.711 PCMA (8) Sequence number: 53058 Timestamp: 3449661727 Synchronization Source identifier: 3820906983 Payload: D4D4D5D5D555D5D555D4D5D5D5D4D4D4... Frame 213 (214 bytes on wire, 214 bytes captured) Ethernet II, Src: 00:06:29:ce:5f:f2, Dst: 00:01:c7:0b:70:22 Destination: 00:01:c7:0b:70:22 (Cisco_0b:70:22) Source: 00:06:29:ce:5f:f2 (Ibm_ce:5f:f2) Type: IP (0x0800) Internet Protocol, Src Addr: 1.1.1.1 (1.1.1.1), Dst Addr: 2.2.2.2 (2.2.2.2) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) Total Length: 200 Identification: 0x0000 (0) Flags: 0x04 Fragment offset: 0 Time to live: 64 Protocol: UDP (0x11) Header checksum: 0x2538 (correct) Source: 1.1.1.1 (1.1.1.1) Destination: 2.2.2.2 (2.2.2.2) User Datagram Protocol, Src Port: 13364 (13364), Dst Port: 19000 (19000) Source port: 13364 (13364) Destination port: 19000 (19000) Length: 180 Checksum: 0xa9d4 (correct) Real-Time Transport Protocol 10.. .... = Version: RFC 1889 Version (2) ..0. .... = Padding: False ...0 .... = Extension: False .... 0000 = Contributing source identifiers count: 0 0... .... = Marker: False .000 1000 = Payload type: ITU-T G.711 PCMA (8) Sequence number: 45555 Timestamp: 16640 Synchronization Source identifier: 1847249288 Payload: 76767671707071717176744A494C4158... Frame 214 (214 bytes on wire, 214 bytes captured) Ethernet II, Src: 00:01:c7:0b:70:22, Dst: 00:06:29:ce:5f:f2 Destination: 00:06:29:ce:5f:f2 (Ibm_ce:5f:f2) Source: 00:01:c7:0b:70:22 (Cisco_0b:70:22) Type: IP (0x0800) Internet Protocol, Src Addr: 2.2.2.2 (2.2.2.2), Dst Addr: 1.1.1.1 (1.1.1.1) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) Total Length: 200 Identification: 0xe399 (58265) Flags: 0x00 Fragment offset: 0 Time to live: 233 Protocol: UDP (0x11) Header checksum: 0xd89d (correct) Source: 2.2.2.2 (2.2.2.2) Destination: 1.1.1.1 (1.1.1.1) User Datagram Protocol, Src Port: 19000 (19000), Dst Port: 13364 (13364) Source port: 19000 (19000) Destination port: 13364 (13364) Length: 180 Checksum: 0xb38f (incorrect, should be 0xa92e) Real-Time Transport Protocol 10.. .... = Version: RFC 1889 Version (2) ..0. .... = Padding: False ...0 .... = Extension: False .... 0000 = Contributing source identifiers count: 0 0... .... = Marker: False .000 1000 = Payload type: ITU-T G.711 PCMA (8) Sequence number: 53059 Timestamp: 3449661887 Synchronization Source identifier: 3820906983 Payload: D5D4D7D7D4D4D4D5D5D5555555555454... Anyone have ideas? Thanks, Owen _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users