So. Ich habe heute mal einen Trace via Wireshark gemacht. Das kam bei einer eingehenden Verbindung raus, die direkt nach dem Abheben wieder getrennt wurde. Codec war in diesem Fall PCMU. Ein Test mit PCMA führte zum gleichen Resultat:
Time Source Destination Protocol Length Info
207 2.844000000 217.0.16.42 91.11.120.234 SIP/SDP 1457 Request: INVITE sip:
[email protected]:5060;transport=udp;line=46C1CEC02BFC311099CE485013200107 |
Frame 207: 1457 bytes on wire (11656 bits), 1457 bytes captured (11656 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 217.0.16.42 (217.0.16.42), Dst: 91.11.120.234 (91.11.120.234)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (INVITE)
No. Time Source Destination Protocol Length Info
208 2.953000000 91.11.120.234 217.0.16.42 SIP 1017 Status: 180 Ringing |
Frame 208: 1017 bytes on wire (8136 bits), 1017 bytes captured (8136 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.16.42 (217.0.16.42)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (180)
No. Time Source Destination Protocol Length Info
209 3.023000000 217.0.16.42 91.11.120.234 SIP 918 Request: PRACK sip:
[email protected]:5060;transport=udp;line=46C1CEC02BFC311099CE485013200107 |
Frame 209: 918 bytes on wire (7344 bits), 918 bytes captured (7344 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 217.0.16.42 (217.0.16.42), Dst: 91.11.120.234 (91.11.120.234)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (PRACK)
No. Time Source Destination Protocol Length Info
210 3.031000000 91.11.120.234 217.0.16.42 SIP 838 Status: 200 OK |
Frame 210: 838 bytes on wire (6704 bits), 838 bytes captured (6704 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.16.42 (217.0.16.42)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (200)
No. Time Source Destination Protocol Length Info
216 12.695000000 91.11.120.234 217.0.1.6 RTP 31 Unknown RTP version 0
Frame 216: 31 bytes on wire (248 bits), 31 bytes captured (248 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
217 12.695000000 91.11.120.234 217.0.1.6 RTCP 31 Source port: 13165 Destination port: 18533
Frame 217: 31 bytes on wire (248 bits), 31 bytes captured (248 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13165 (13165), Dst Port: 18533 (18533)
[RTCP frame length check: OK - 0 bytes]
No. Time Source Destination Protocol Length Info
218 12.703000000 91.11.120.234 217.0.16.42 SIP/SDP 1235 Status: 200 OK |
Frame 218: 1235 bytes on wire (9880 bits), 1235 bytes captured (9880 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.16.42 (217.0.16.42)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (200)
No. Time Source Destination Protocol Length Info
219 12.719000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=0, Time=0
Frame 219: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
220 12.734000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=1, Time=160
Frame 220: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
221 12.758000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=2, Time=320
Frame 221: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
222 12.773000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=3, Time=480
Frame 222: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
223 12.797000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=4, Time=640
Frame 223: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
224 12.813000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=5, Time=800
Frame 224: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
225 12.836000000 217.0.16.42 91.11.120.234 SIP 890 Request: ACK sip:
[email protected]:5060;transport=udp;line=46C1CEC02BFC311099CE485013200107 |
Frame 225: 890 bytes on wire (7120 bits), 890 bytes captured (7120 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 217.0.16.42 (217.0.16.42), Dst: 91.11.120.234 (91.11.120.234)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (ACK)
No. Time Source Destination Protocol Length Info
226 12.836000000 91.11.120.234 217.0.1.6 RTP 202 PT=PCMU, SSRC=0x9A065400, Seq=6, Time=960
Frame 226: 202 bytes on wire (1616 bits), 202 bytes captured (1616 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.1.6 (217.0.1.6)
User Datagram Protocol, Src Port: 13164 (13164), Dst Port: 18532 (18532)
Real-Time Transport Protocol
No. Time Source Destination Protocol Length Info
227 12.852000000 217.0.16.42 91.11.120.234 SIP 890 Request: BYE sip:
[email protected]:5060;transport=udp;line=46C1CEC02BFC311099CE485013200107 |
Frame 227: 890 bytes on wire (7120 bits), 890 bytes captured (7120 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 217.0.16.42 (217.0.16.42), Dst: 91.11.120.234 (91.11.120.234)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (BYE)
No. Time Source Destination Protocol Length Info
228 12.859000000 91.11.120.234 217.0.16.42 SIP 836 Status: 200 OK |
Frame 228: 836 bytes on wire (6688 bits), 836 bytes captured (6688 bits) on interface 0
Point-to-Point Protocol
Internet Protocol Version 4, Src: 91.11.120.234 (91.11.120.234), Dst: 217.0.16.42 (217.0.16.42)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol (200)
Irgendwas Auffälliges zu erkennen? Danke schon mal für jegliche Hinweise ...