Bei einem Kunden tritt verstärkt diese Probleme auf. ist eine 3CX Pro Debian lokal betrieben (seit über 2 Jahren) mit einem Vodafone Einzelrufnummernanschluss.
Es gibt Rufnummern, da kann man das Problem fast immer hinstellen, einmal kam ich kurz durch dann war das Gespräch abgebrochen, ich hatte erst die Vermutung das der gerufeneTeilnehmer vielleicht die Rufnummer auf sein Handy blockiert hat.
Ich konnte ihn ohne Probleme über meinen Vodafoneanschluss erreichen, er hat sein Handy überprüft und dort war alles in Ordnung, darauf hin habe ich erreichen können, aber der Gespräch war sofort abgebrochen.
Im Bereich des SIP Checker abe ich einen ausgehende Anruf auf diese Nummer anschließend generiert:

Kann der Sipcode durch die Fritzbox erzeugt werden? Wenn ich mein Handy anrufe ist alles ok

Ich habe auch einen Dump erzeugt:

rame 5650: Packet, 964 bytes on wire (7712 bits), 964 bytes captured (7712 bits)
Linux cooked capture v2
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 944
Identification: 0xca2f (51759)
010. .... = Flags: 0x2, Don't fragment
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0x6f0b [validation disabled]
[Header checksum status: Unverified]
Source Address: 127.0.0.1
Destination Address: 127.0.0.1
[Stream index: 1]
User Datagram Protocol, Src Port: 5063, Dst Port: 5062
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:[email protected]:5062 SIP/2.0
Method: INVITE
Request-URI: sip:[email protected]:5062
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP 127.0.0.1:5063;branch=z9hG4bK-524287-1---ec6acb2f97be6e31;rport
Max-Forwards: 70
Contact: <sip:[email protected]:5063>
To: <sip:[email protected]:5062>
From: " , Josef"<sip:[email protected]>;tag=5da0aa2d
Call-ID: T7Zt_lbO18V-izppuBkC2g..
[Generated Call-ID: T7Zt_lbO18V-izppuBkC2g..]
CSeq: 1 INVITE
Subject:
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Supported: replaces
User-Agent: 3CX WebRTC proxy
Content-Length: 382
Message Body
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o): 3cxWebRTC 4375165 18446744071566594418 IN IP4 127.0.0.1
Session Name (s): 176.95.226.18:[10510,]
Connection Information (c): IN IP4 127.0.0.1
Time Description, active time (t): 0 0
Media Description, name and address (m): audio 8522 RTP/AVP 0 8 9 109 101
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute (a): rtpmap:8 PCMA/8000
Media Attribute (a): rtpmap:9 G722/8000/1
Media Attribute (a): rtpmap:109 opus/48000/2
Media Attribute (a): fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
Media Attribute (a): rtpmap:101 telephone-event/8000
Media Attribute (a): fmtp:101 0-15
Media Attribute (a): ptime:20
Media Attribute (a): sendrecv
[Generated Call-ID: T7Zt_lbO18V-izppuBkC2g..]
[Generated Call-ID: hJFM4L5ypHY7uAS6aInZOQ..]
Frame 5888: Packet, 1032 bytes on wire (8256 bits), 1032 bytes captured (8256 bits)
Encapsulation type: Linux cooked-mode capture v2 (210)
Arrival Time: Aug 20, 2026 11:06:46.158080000 Mitteleuropäische Sommerzeit
UTC Arrival Time: Aug 20, 2026 09:06:46.158080000 UTC
Epoch Arrival Time: 1787216806.158080000
[Time shift for this packet: 0.000000000 seconds]
[Time delta from previous captured frame: 45.000 microseconds]
[Time delta from previous displayed frame: 45.000 microseconds]
[Time since reference or first frame: 28.981567000 seconds]
Frame Number: 5888
Frame Length: 1032 bytes (8256 bits)
Capture Length: 1032 bytes (8256 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: sll:ethertype:ip:udp:sip:sdp]
Character encoding: ASCII (0)
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Linux cooked capture v2
Protocol: IPv4 (0x0800)
Reserved: 0000
Interface index: 2
Link-layer address type: Ethernet (1)
Packet type: Sent by us (4)
Link-layer address length: 6
Source: GigaByteTech_01:3a:7e (74:56:3c:01:3a:7e)
Unused: 0000
Internet Protocol Version 4, Src: 192.168.4.252, Dst: 139.7.X.X.X
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 1012
Identification: 0xd82f (55343)
010. .... = Flags: 0x2, Don't fragment
0... .... = Reserved bit: Not set
.1.. .... = Don't fragment: Set
..0. .... = More fragments: Not set
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0xc478 [validation disabled]
[Header checksum status: Unverified]
Source Address: 192.168.4.252
Destination Address: 139.7.X.X.X
[Stream index: 12]
User Datagram Protocol, Src Port: 5062, Dst Port: 5060
Source Port: 5062
Destination Port: 5060
Length: 992
Checksum: 0xc91e [unverified]
[Checksum Status: Unverified]
[Stream index: 17]
[Stream Packet Number: 9]
[Timestamps]
[Time since first frame: 26.765856000 seconds]
[Time since previous frame: 13.065881000 seconds]
UDP payload (984 bytes)
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:[email protected]:5060 SIP/2.0
Method: INVITE
Request-URI: sip:[email protected]:5060
Request-URI User Part: +491726XXXX
E.164 number (MSISDN): 491726XXXX
Country Code: Germany (Federal Republic of) (49)
Request-URI Host Part: 05171.sip.arcor.de
Request-URI Host Port: 5060
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP 192.168.4.252:5062;branch=z9hG4bK-524287-1---bcb20e10f4cd013b;rport
Transport: UDP
Sent-by Address: 192.168.4.252
Sent-by port: 5062
Branch: z9hG4bK-524287-1---bcb20e10f4cd013b
RPort: rport
Max-Forwards: 70
Contact: <sip:[email protected],X,X:5062>
Contact URI: sip:[email protected],X,X:5062
Contact URI User Part: 05171XXXX
Contact URI Host Part: 176.9X,X,X
Contact URI Host Port: 5062
To: <sip:[email protected]:5060>
SIP to address: sip:[email protected]:5060
SIP to address User Part: +491726XXXX
E.164 number (MSISDN): 491726XXXX
Country Code: Germany (Federal Republic of) (49)
SIP to address Host Part: 05171.sip.arcor.de
SIP to address Host Port: 5060
From: "05171XXXX"<sip:[email protected]:5060>;tag=db041828
SIP from display info: "05171XXXX"
SIP from address: sip:[email protected]:5060
SIP from address User Part: 05171XXXX
SIP from address Host Part: 05171.sip.arcor.de
SIP from address Host Port: 5060
SIP from tag: db041828
Call-ID: JzBxCjJ33TvobE9YxXZJDQ..
[Generated Call-ID: JzBxCjJ33TvobE9YxXZJDQ..]
CSeq: 1 INVITE
Sequence Number: 1
Method: INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE, UPDATE
Content-Type: application/sdp
Supported: replaces, timer
User-Agent: 3CXPhoneSystem 20.0.9.995 (995)
Remote-Party-ID: "05171XXXX"<sip:[email protected]:5060>;party=calling
[Expert Info (Note/Undecoded): Unrecognised SIP header (remote-party-id)]
[Unrecognised SIP header (remote-party-id)]
[Severity level: Note]
[Group: Undecoded]
Content-Length: 290
Message Body
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o): 3cxPS 13550676177059840 13050143423070209 IN IP4 176.9X,X,X
Owner Username: 3cxPS
Session ID: 13550676177059840
Session Version: 13050143423070209
Owner Network Type: IN
Owner Address Type: IP4
Owner Address: 176.9X,X,X
Session Name (s): 3cxPS Audio call
Connection Information (c): IN IP4 176.9X,X,X
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 176.9X,X,X
Time Description, active time (t): 0 0
Session Start Time: 0
Session Stop Time: 0
Media Description, name and address (m): audio 9094 RTP/AVP 8 0 18 101
Media Type: audio
Media Port: 9094
Media Protocol: RTP/AVP
Media Format: ITU-T G.711 PCMA
Media Format: ITU-T G.711 PCMU
Media Format: ITU-T G.729
Media Format: DynamicRTP-Type-101
Media Attribute (a): rtpmap:8 PCMA/8000
Media Attribute Fieldname: rtpmap
Media Format: 8
MIME Type: PCMA
Sample Rate: 8000
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute Fieldname: rtpmap
Media Format: 0
MIME Type: PCMU
Sample Rate: 8000
Media Attribute (a): rtpmap:18 G729/8000
Media Attribute Fieldname: rtpmap
Media Format: 18
MIME Type: G729
Sample Rate: 8000
Media Attribute (a): fmtp:18 annexb=no
Media Attribute Fieldname: fmtp
Media Format: 18 [G729]
Media format specific parameters: annexb=no
Media Attribute (a): rtpmap:101 telephone-event/8000
Media Attribute Fieldname: rtpmap
Media Format: 101
MIME Type: telephone-event
Sample Rate: 8000
Media Attribute (a): sendrecv
[Generated Call-ID: JzBxCjJ33TvobE9YxXZJDQ..]
Frame 5976: Packet, 953 bytes on wire (7624 bits), 953 bytes captured (7624 bits)
Encapsulation type: Linux cooked-mode capture v2 (210)
Arrival Time: Aug 20, 2026 11:06:46.279645000 Mitteleuropäische Sommerzeit
UTC Arrival Time: Aug 20, 2026 09:06:46.279645000 UTC
Epoch Arrival Time: 1787216806.279645000
[Time shift for this packet: 0.000000000 seconds]
[Time delta from previous captured frame: 25.846000 milliseconds]
[Time delta from previous displayed frame: 25.846000 milliseconds]
[Time since reference or first frame: 29.103132000 seconds]
Frame Number: 5976
Frame Length: 953 bytes (7624 bits)
Capture Length: 953 bytes (7624 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: sll:ethertype:ip:udp:sip:sdp]
Character encoding: ASCII (0)
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Linux cooked capture v2
Protocol: IPv4 (0x0800)
Reserved: 0000
Interface index: 1
Link-layer address type: Loopback (772)
Packet type: Unicast to us (0)
Link-layer address length: 6
Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
Unused: 0000
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 933
Identification: 0xca6d (51821)
010. .... = Flags: 0x2, Don't fragment
0... .... = Reserved bit: Not set
.1.. .... = Don't fragment: Set
..0. .... = More fragments: Not set
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0x6ed8 [validation disabled]
[Header checksum status: Unverified]
Source Address: 127.0.0.1
Destination Address: 127.0.0.1
[Stream index: 1]
User Datagram Protocol, Src Port: 5062, Dst Port: 5483
Source Port: 5062
Destination Port: 5483
Length: 913
Checksum: 0x01a5 [unverified]
[Checksum Status: Unverified]
[Stream index: 18]
[Stream Packet Number: 14]
[Timestamps]
[Time since first frame: 26.768021000 seconds]
[Time since previous frame: 9.913352000 seconds]
UDP payload (905 bytes)
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:[email protected]:5483 SIP/2.0
Method: INVITE
Request-URI: sip:[email protected]:5483
Request-URI User Part: EndCall
Request-URI Host Part: 127.0.0.1
Request-URI Host Port: 5483
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP 127.0.0.1:5062;branch=z9hG4bK-524287-1---a5e73d7447fb1179;rport
Transport: UDP
Sent-by Address: 127.0.0.1
Sent-by port: 5062
Branch: z9hG4bK-524287-1---a5e73d7447fb1179
RPort: rport
Max-Forwards: 70
Contact: <sip:[email protected]:5062>
Contact URI: sip:[email protected]:5062
Contact URI User Part: 49
Contact URI Host Part: 127.0.0.1
Contact URI Host Port: 5062
To: <sip:[email protected]:5062>
SIP to address: sip:[email protected]:5062
SIP to address User Part: 01726XXX
SIP to address Host Part: 127.0.0.1
SIP to address Host Port: 5062
From: " Josef"<sip:[email protected]>;tag=65d35425
SIP from display info: ", Josef"
SIP from address: sip:[email protected]
SIP from address User Part: 49
SIP from address Host Part: 127.0.0.1
SIP from tag: 65d35425
Call-ID: hJFM4L5ypHY7uAS6aInZOQ..
[Generated Call-ID: hJFM4L5ypHY7uAS6aInZOQ..]
CSeq: 1 INVITE
Sequence Number: 1
Method: INVITE
Subject: p=#NOTFOUND
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE, UPDATE
Content-Type: application/sdp
Supported: replaces, timer
Content-Length: 379
Message Body
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o): 3cxPS 29756508333932544 19664081841553409 IN IP4 127.0.0.1
Owner Username: 3cxPS
Session ID: 29756508333932544
Session Version: 19664081841553409
Owner Network Type: IN
Owner Address Type: IP4
Owner Address: 127.0.0.1
Session Name (s): 3cxPS Audio call
Connection Information (c): IN IP4 127.0.0.1
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 127.0.0.1
Time Description, active time (t): 0 0
Session Start Time: 0
Session Stop Time: 0
Media Description, name and address (m): audio 8522 RTP/AVP 0 8 9 109 101
Media Type: audio
Media Port: 8522
Media Protocol: RTP/AVP
Media Format: ITU-T G.711 PCMU
Media Format: ITU-T G.711 PCMA
Media Format: ITU-T G.722
Media Format: DynamicRTP-Type-109
Media Format: DynamicRTP-Type-101
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute Fieldname: rtpmap
Media Format: 0
MIME Type: PCMU
Sample Rate: 8000
Media Attribute (a): rtpmap:8 PCMA/8000
Media Attribute Fieldname: rtpmap
Media Format: 8
MIME Type: PCMA
Sample Rate: 8000
Media Attribute (a): rtpmap:9 G722/8000/1
Media Attribute Fieldname: rtpmap
Media Format: 9
MIME Type: G722
Sample Rate: 8000 (RTP clock rate is 8kHz, actual sampling rate is 16kHz)
Audio Channels: 1
Media Attribute (a): rtpmap:109 opus/48000/2
Media Attribute Fieldname: rtpmap
Media Format: 109
MIME Type: opus
Sample Rate: 48000
Audio Channels: 2
Media Attribute (a): fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
Media Attribute Fieldname: fmtp
Media Format: 109 [opus]
Media format specific parameters: maxplaybackrate=48000
Media format specific parameters: stereo=1
Media format specific parameters: useinbandfec=1
Media Attribute (a): rtpmap:101 telephone-event/8000
Media Attribute Fieldname: rtpmap
Media Format: 101
MIME Type: telephone-event
Sample Rate: 8000
Media Attribute (a): fmtp:101 0-15
Media Attribute Fieldname: fmtp
Media Format: 101 [telephone-event]
Media format specific parameters: 0-15
Media Attribute (a): ptime:20
Media Attribute Fieldname: ptime
Media Attribute Value: 20
Media Attribute (a): sendrecv
[Generated Call-ID: hJFM4L5ypHY7uAS6aInZOQ..]
Habe zu spät gesehen das ich auch eine CSV exportieren kann.
Es gibt Rufnummern, da kann man das Problem fast immer hinstellen, einmal kam ich kurz durch dann war das Gespräch abgebrochen, ich hatte erst die Vermutung das der gerufeneTeilnehmer vielleicht die Rufnummer auf sein Handy blockiert hat.
Ich konnte ihn ohne Probleme über meinen Vodafoneanschluss erreichen, er hat sein Handy überprüft und dort war alles in Ordnung, darauf hin habe ich erreichen können, aber der Gespräch war sofort abgebrochen.
Im Bereich des SIP Checker abe ich einen ausgehende Anruf auf diese Nummer anschließend generiert:

Kann der Sipcode durch die Fritzbox erzeugt werden? Wenn ich mein Handy anrufe ist alles ok

Ich habe auch einen Dump erzeugt:

rame 5650: Packet, 964 bytes on wire (7712 bits), 964 bytes captured (7712 bits)
Linux cooked capture v2
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 944
Identification: 0xca2f (51759)
010. .... = Flags: 0x2, Don't fragment
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0x6f0b [validation disabled]
[Header checksum status: Unverified]
Source Address: 127.0.0.1
Destination Address: 127.0.0.1
[Stream index: 1]
User Datagram Protocol, Src Port: 5063, Dst Port: 5062
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:[email protected]:5062 SIP/2.0
Method: INVITE
Request-URI: sip:[email protected]:5062
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP 127.0.0.1:5063;branch=z9hG4bK-524287-1---ec6acb2f97be6e31;rport
Max-Forwards: 70
Contact: <sip:[email protected]:5063>
To: <sip:[email protected]:5062>
From: " , Josef"<sip:[email protected]>;tag=5da0aa2d
Call-ID: T7Zt_lbO18V-izppuBkC2g..
[Generated Call-ID: T7Zt_lbO18V-izppuBkC2g..]
CSeq: 1 INVITE
Subject:
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Content-Type: application/sdp
Supported: replaces
User-Agent: 3CX WebRTC proxy
Content-Length: 382
Message Body
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o): 3cxWebRTC 4375165 18446744071566594418 IN IP4 127.0.0.1
Session Name (s): 176.95.226.18:[10510,]
Connection Information (c): IN IP4 127.0.0.1
Time Description, active time (t): 0 0
Media Description, name and address (m): audio 8522 RTP/AVP 0 8 9 109 101
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute (a): rtpmap:8 PCMA/8000
Media Attribute (a): rtpmap:9 G722/8000/1
Media Attribute (a): rtpmap:109 opus/48000/2
Media Attribute (a): fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
Media Attribute (a): rtpmap:101 telephone-event/8000
Media Attribute (a): fmtp:101 0-15
Media Attribute (a): ptime:20
Media Attribute (a): sendrecv
[Generated Call-ID: T7Zt_lbO18V-izppuBkC2g..]
[Generated Call-ID: hJFM4L5ypHY7uAS6aInZOQ..]
Frame 5888: Packet, 1032 bytes on wire (8256 bits), 1032 bytes captured (8256 bits)
Encapsulation type: Linux cooked-mode capture v2 (210)
Arrival Time: Aug 20, 2026 11:06:46.158080000 Mitteleuropäische Sommerzeit
UTC Arrival Time: Aug 20, 2026 09:06:46.158080000 UTC
Epoch Arrival Time: 1787216806.158080000
[Time shift for this packet: 0.000000000 seconds]
[Time delta from previous captured frame: 45.000 microseconds]
[Time delta from previous displayed frame: 45.000 microseconds]
[Time since reference or first frame: 28.981567000 seconds]
Frame Number: 5888
Frame Length: 1032 bytes (8256 bits)
Capture Length: 1032 bytes (8256 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: sll:ethertype:ip:udp:sip:sdp]
Character encoding: ASCII (0)
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Linux cooked capture v2
Protocol: IPv4 (0x0800)
Reserved: 0000
Interface index: 2
Link-layer address type: Ethernet (1)
Packet type: Sent by us (4)
Link-layer address length: 6
Source: GigaByteTech_01:3a:7e (74:56:3c:01:3a:7e)
Unused: 0000
Internet Protocol Version 4, Src: 192.168.4.252, Dst: 139.7.X.X.X
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 1012
Identification: 0xd82f (55343)
010. .... = Flags: 0x2, Don't fragment
0... .... = Reserved bit: Not set
.1.. .... = Don't fragment: Set
..0. .... = More fragments: Not set
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0xc478 [validation disabled]
[Header checksum status: Unverified]
Source Address: 192.168.4.252
Destination Address: 139.7.X.X.X
[Stream index: 12]
User Datagram Protocol, Src Port: 5062, Dst Port: 5060
Source Port: 5062
Destination Port: 5060
Length: 992
Checksum: 0xc91e [unverified]
[Checksum Status: Unverified]
[Stream index: 17]
[Stream Packet Number: 9]
[Timestamps]
[Time since first frame: 26.765856000 seconds]
[Time since previous frame: 13.065881000 seconds]
UDP payload (984 bytes)
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:[email protected]:5060 SIP/2.0
Method: INVITE
Request-URI: sip:[email protected]:5060
Request-URI User Part: +491726XXXX
E.164 number (MSISDN): 491726XXXX
Country Code: Germany (Federal Republic of) (49)
Request-URI Host Part: 05171.sip.arcor.de
Request-URI Host Port: 5060
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP 192.168.4.252:5062;branch=z9hG4bK-524287-1---bcb20e10f4cd013b;rport
Transport: UDP
Sent-by Address: 192.168.4.252
Sent-by port: 5062
Branch: z9hG4bK-524287-1---bcb20e10f4cd013b
RPort: rport
Max-Forwards: 70
Contact: <sip:[email protected],X,X:5062>
Contact URI: sip:[email protected],X,X:5062
Contact URI User Part: 05171XXXX
Contact URI Host Part: 176.9X,X,X
Contact URI Host Port: 5062
To: <sip:[email protected]:5060>
SIP to address: sip:[email protected]:5060
SIP to address User Part: +491726XXXX
E.164 number (MSISDN): 491726XXXX
Country Code: Germany (Federal Republic of) (49)
SIP to address Host Part: 05171.sip.arcor.de
SIP to address Host Port: 5060
From: "05171XXXX"<sip:[email protected]:5060>;tag=db041828
SIP from display info: "05171XXXX"
SIP from address: sip:[email protected]:5060
SIP from address User Part: 05171XXXX
SIP from address Host Part: 05171.sip.arcor.de
SIP from address Host Port: 5060
SIP from tag: db041828
Call-ID: JzBxCjJ33TvobE9YxXZJDQ..
[Generated Call-ID: JzBxCjJ33TvobE9YxXZJDQ..]
CSeq: 1 INVITE
Sequence Number: 1
Method: INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE, UPDATE
Content-Type: application/sdp
Supported: replaces, timer
User-Agent: 3CXPhoneSystem 20.0.9.995 (995)
Remote-Party-ID: "05171XXXX"<sip:[email protected]:5060>;party=calling
[Expert Info (Note/Undecoded): Unrecognised SIP header (remote-party-id)]
[Unrecognised SIP header (remote-party-id)]
[Severity level: Note]
[Group: Undecoded]
Content-Length: 290
Message Body
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o): 3cxPS 13550676177059840 13050143423070209 IN IP4 176.9X,X,X
Owner Username: 3cxPS
Session ID: 13550676177059840
Session Version: 13050143423070209
Owner Network Type: IN
Owner Address Type: IP4
Owner Address: 176.9X,X,X
Session Name (s): 3cxPS Audio call
Connection Information (c): IN IP4 176.9X,X,X
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 176.9X,X,X
Time Description, active time (t): 0 0
Session Start Time: 0
Session Stop Time: 0
Media Description, name and address (m): audio 9094 RTP/AVP 8 0 18 101
Media Type: audio
Media Port: 9094
Media Protocol: RTP/AVP
Media Format: ITU-T G.711 PCMA
Media Format: ITU-T G.711 PCMU
Media Format: ITU-T G.729
Media Format: DynamicRTP-Type-101
Media Attribute (a): rtpmap:8 PCMA/8000
Media Attribute Fieldname: rtpmap
Media Format: 8
MIME Type: PCMA
Sample Rate: 8000
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute Fieldname: rtpmap
Media Format: 0
MIME Type: PCMU
Sample Rate: 8000
Media Attribute (a): rtpmap:18 G729/8000
Media Attribute Fieldname: rtpmap
Media Format: 18
MIME Type: G729
Sample Rate: 8000
Media Attribute (a): fmtp:18 annexb=no
Media Attribute Fieldname: fmtp
Media Format: 18 [G729]
Media format specific parameters: annexb=no
Media Attribute (a): rtpmap:101 telephone-event/8000
Media Attribute Fieldname: rtpmap
Media Format: 101
MIME Type: telephone-event
Sample Rate: 8000
Media Attribute (a): sendrecv
[Generated Call-ID: JzBxCjJ33TvobE9YxXZJDQ..]
Frame 5976: Packet, 953 bytes on wire (7624 bits), 953 bytes captured (7624 bits)
Encapsulation type: Linux cooked-mode capture v2 (210)
Arrival Time: Aug 20, 2026 11:06:46.279645000 Mitteleuropäische Sommerzeit
UTC Arrival Time: Aug 20, 2026 09:06:46.279645000 UTC
Epoch Arrival Time: 1787216806.279645000
[Time shift for this packet: 0.000000000 seconds]
[Time delta from previous captured frame: 25.846000 milliseconds]
[Time delta from previous displayed frame: 25.846000 milliseconds]
[Time since reference or first frame: 29.103132000 seconds]
Frame Number: 5976
Frame Length: 953 bytes (7624 bits)
Capture Length: 953 bytes (7624 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: sll:ethertype:ip:udp:sip:sdp]
Character encoding: ASCII (0)
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Linux cooked capture v2
Protocol: IPv4 (0x0800)
Reserved: 0000
Interface index: 1
Link-layer address type: Loopback (772)
Packet type: Unicast to us (0)
Link-layer address length: 6
Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
Unused: 0000
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 933
Identification: 0xca6d (51821)
010. .... = Flags: 0x2, Don't fragment
0... .... = Reserved bit: Not set
.1.. .... = Don't fragment: Set
..0. .... = More fragments: Not set
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0x6ed8 [validation disabled]
[Header checksum status: Unverified]
Source Address: 127.0.0.1
Destination Address: 127.0.0.1
[Stream index: 1]
User Datagram Protocol, Src Port: 5062, Dst Port: 5483
Source Port: 5062
Destination Port: 5483
Length: 913
Checksum: 0x01a5 [unverified]
[Checksum Status: Unverified]
[Stream index: 18]
[Stream Packet Number: 14]
[Timestamps]
[Time since first frame: 26.768021000 seconds]
[Time since previous frame: 9.913352000 seconds]
UDP payload (905 bytes)
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:[email protected]:5483 SIP/2.0
Method: INVITE
Request-URI: sip:[email protected]:5483
Request-URI User Part: EndCall
Request-URI Host Part: 127.0.0.1
Request-URI Host Port: 5483
[Resent Packet: False]
Message Header
Via: SIP/2.0/UDP 127.0.0.1:5062;branch=z9hG4bK-524287-1---a5e73d7447fb1179;rport
Transport: UDP
Sent-by Address: 127.0.0.1
Sent-by port: 5062
Branch: z9hG4bK-524287-1---a5e73d7447fb1179
RPort: rport
Max-Forwards: 70
Contact: <sip:[email protected]:5062>
Contact URI: sip:[email protected]:5062
Contact URI User Part: 49
Contact URI Host Part: 127.0.0.1
Contact URI Host Port: 5062
To: <sip:[email protected]:5062>
SIP to address: sip:[email protected]:5062
SIP to address User Part: 01726XXX
SIP to address Host Part: 127.0.0.1
SIP to address Host Port: 5062
From: " Josef"<sip:[email protected]>;tag=65d35425
SIP from display info: ", Josef"
SIP from address: sip:[email protected]
SIP from address User Part: 49
SIP from address Host Part: 127.0.0.1
SIP from tag: 65d35425
Call-ID: hJFM4L5ypHY7uAS6aInZOQ..
[Generated Call-ID: hJFM4L5ypHY7uAS6aInZOQ..]
CSeq: 1 INVITE
Sequence Number: 1
Method: INVITE
Subject: p=#NOTFOUND
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE, UPDATE
Content-Type: application/sdp
Supported: replaces, timer
Content-Length: 379
Message Body
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o): 3cxPS 29756508333932544 19664081841553409 IN IP4 127.0.0.1
Owner Username: 3cxPS
Session ID: 29756508333932544
Session Version: 19664081841553409
Owner Network Type: IN
Owner Address Type: IP4
Owner Address: 127.0.0.1
Session Name (s): 3cxPS Audio call
Connection Information (c): IN IP4 127.0.0.1
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 127.0.0.1
Time Description, active time (t): 0 0
Session Start Time: 0
Session Stop Time: 0
Media Description, name and address (m): audio 8522 RTP/AVP 0 8 9 109 101
Media Type: audio
Media Port: 8522
Media Protocol: RTP/AVP
Media Format: ITU-T G.711 PCMU
Media Format: ITU-T G.711 PCMA
Media Format: ITU-T G.722
Media Format: DynamicRTP-Type-109
Media Format: DynamicRTP-Type-101
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute Fieldname: rtpmap
Media Format: 0
MIME Type: PCMU
Sample Rate: 8000
Media Attribute (a): rtpmap:8 PCMA/8000
Media Attribute Fieldname: rtpmap
Media Format: 8
MIME Type: PCMA
Sample Rate: 8000
Media Attribute (a): rtpmap:9 G722/8000/1
Media Attribute Fieldname: rtpmap
Media Format: 9
MIME Type: G722
Sample Rate: 8000 (RTP clock rate is 8kHz, actual sampling rate is 16kHz)
Audio Channels: 1
Media Attribute (a): rtpmap:109 opus/48000/2
Media Attribute Fieldname: rtpmap
Media Format: 109
MIME Type: opus
Sample Rate: 48000
Audio Channels: 2
Media Attribute (a): fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
Media Attribute Fieldname: fmtp
Media Format: 109 [opus]
Media format specific parameters: maxplaybackrate=48000
Media format specific parameters: stereo=1
Media format specific parameters: useinbandfec=1
Media Attribute (a): rtpmap:101 telephone-event/8000
Media Attribute Fieldname: rtpmap
Media Format: 101
MIME Type: telephone-event
Sample Rate: 8000
Media Attribute (a): fmtp:101 0-15
Media Attribute Fieldname: fmtp
Media Format: 101 [telephone-event]
Media format specific parameters: 0-15
Media Attribute (a): ptime:20
Media Attribute Fieldname: ptime
Media Attribute Value: 20
Media Attribute (a): sendrecv
[Generated Call-ID: hJFM4L5ypHY7uAS6aInZOQ..]
Habe zu spät gesehen das ich auch eine CSV exportieren kann.
Anhänge
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