We have a Cisco Model ISR4321/K9 router with Cisco IOS XE Software Version 16.09.04
The problem occurs when we make a call forward to an external number.
The call made by User A to the destination User B (user B has activated a call forwarding to another external number User C)
User C answers the call, user C does not hear anything, User A does not hear anything either, but after 18 seconds the call closes automatically by itself.
User A -->+49xxxxxxx90
User B--> +49xxxxxxx55 --> call forward to User C
User C--> +49xxxxxxx30
-------
voice service voip
no notify redirect ip2ip
address-hiding
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback pass-through g711alaw h323
------
voice register global
mode cme
source-address 172.20.XXX.XX port 5060
max-dn 10
auto-register
!
voice register dn 2
number +49xxxxxx55
call-forward b2bua unregistered +49xxxxxxxx30
-----------
000589: Jan 30 09:10:10.316: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:
INVITE sip:+49xxxxxxx55@stapad.ngn.vodafone.de;user=phone SIP/2.0
Via: SIP/2.0/TCP 2.207.165.116:5060;branch=z9hxxxxx7b10.1
To: <sip:+49xxxxxxx55@hansx001.ngn.vodafone.de;user=phone>
From: <sip:+49xxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
Call-ID: SDxxxxxxx0
CSeq: 1 INVITE
Max-Forwards: 59
Contact: <sip:+49xxxxxxx90@2.207.165.116:5060;transport=tcp>
Date: Mon, 30 Jan 2023 10:10:10 GMT
Allow: INVITE, ACK, PRACK, CANCEL, BYE, OPTIONS, MESSAGE, NOTIFY, UPDATE, REGISTER, INFO, REFER, SUBSCRIBE
Supported: resource-priority,timer,100rel
P-Asserted-Identity: <sip:+49xxxxxx90@telekom.de;user=phone>
P-Asserted-Identity: <tel:+49xxxxxxx90>
Session-Expires: 1810;refresher=uac
Min-SE: 600
Accept: application/sdp
P-Early-Media: supported
Content-Type: application/sdp
Content-Length: 172
v=0
o=- 0 0 IN IP4 2.207.165.116
s=IMSS
c=IN IP4 2.207.165.116
t=0 0
m=audio 29414 RTP/AVP 8 97
b=AS:80
a=rtpmap:97 telephone-event/8000
a=ptime:20
a=maxptime:30
000590: Jan 30 09:10:10.322: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Sent:
INVITE sip:+49xxxxxx30@2.207.165.116:5060 SIP/2.0
Via: SIP/2.0/UDP 145.253.139.26:5060;branch=z9xxxxx2E
From: <sip:+49xxxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
To: <sip:+49xxxxxxx30@2.207.165.116>
Call-ID: BBxxxxF@145.253.139.26
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Min-SE: 600
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
CSeq: 101 INVITE
Timestamp: 1675069810
Contact: <sip:+49xxxxxxx90@145.253.139.26:5060>
Expires: 180
Allow-Events: telephone-event
Max-Forwards: 58
P-Preferred-Identity: <sip:+49xxxxxxx65@145.253.139.26>
Session-Expires: 1810;refresher=uac
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 226
v=0
o=- 7795 7427 IN IP4 145.253.139.26
s=SIP Call
c=IN IP4 145.253.139.26
t=0 0
m=audio 10050 RTP/AVP 8 101
c=IN IP4 145.253.139.26
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:20
000591: Jan 30 09:10:10.323: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/TCP 2.207.165.116:5060;branch=z9hG4bK67gvn120b8vhd8fe7b10.1
From: <sip:+49xxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
To: <sip:+49xxxxxxx55@hansx001.ngn.vodafone.de;user=phone>
Call-ID: SDxxxxxxE0
CSeq: 1 INVITE
Allow-Events: telephone-event
Content-Length: 0
000592: Jan 30 09:10:10.342: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 145.253.139.26:5060;branch=z9hG4bK1C81152E
From: <sip:+49xxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
To: <sip:+49xxxxxxx030@2.207.165.116>
Call-ID: BBxxxxxF@145.253.139.26
CSeq: 101 INVITE
Timestamp: 1675069810
Content-Length: 0
000593: Jan 30 09:10:11.118: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 145.253.139.26:5060;branch=z9hG4bK1C81152E
From: <sip:+49xxxxxxx90@145.253.139.26>;tag=12Fxxxxx9D
To: <sip:+49xxxxxx30@2.207.165.116>;tag=SDviupa99-f7xxxxxx0000
Call-ID: BBxxxx2F@145.253.139.26
CSeq: 101 INVITE
Timestamp: 1675069810
Supported: resource-priority,timer
Require: timer
Session-Expires: 1810;refresher=uac
Accept: application/sdp
Allow: INVITE, ACK, PRACK, CANCEL, BYE, OPTIONS, MESSAGE, NOTIFY, UPDATE, REGISTER, INFO, REFER, SUBSCRIBE
Contact: <sip:+49xxxxxxxxx30@2.207.165.116:5060;transport=udp>
Content-Type: application/sdp
Content-Length: 168
v=0
o=- 0 7859801 IN IP4 2.207.165.116
s=IMSS
c=IN IP4 2.207.165.116
t=0 0
m=audio 27718 RTP/AVP 8 101
a=rtpmap:101 telephone-event/8000
a=sendrecv
a=ptime:20
000594: Jan 30 09:10:11.121: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Sent:
ACK sip:+49xxxxxxxx30@2.207.165.116:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP 145.253.139.26:5060;branch=z9hxxxxx6
From: <sip:+49xxxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
To: <sip:+49xxxxxxxx30@2.207.165.116>;tag=SDviupa99-fxxxxx0-0000
Call-ID: BBxxxxxx2F@145.253.139.26
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0
000595: Jan 30 09:10:11.124: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 200 OK
Via: SIP/2.0/TCP 2.207.165.116:5060;branch=z9xxxx10.1
From: <sip:+49xxxxxxxx90@telekom.de;user=phone>;tag=SDxxxxxa9
To: <sip:+49xxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12F7BB33-CCC
Call-ID: SDxxxxx0E0
CSeq: 1 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
P-Preferred-Identity: <sip:+49xxxxxxxx65@145.253.139.26>
Contact: <sip:+49xxxxxxx30@145.253.139.26:5060;transport=tcp>
Supported: replaces
Supported: sdp-anat
Session-Expires: 1810;refresher=uac
Require: timer
Supported: timer
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 223
v=0
o=- 1353 4293 IN IP4 145.253.139.26
s=SIP Call
c=IN IP4 145.253.139.26
t=0 0
m=audio 10048 RTP/AVP 8 97
c=IN IP4 145.253.139.26
a=rtpmap:8 PCMA/8000
a=rtpmap:97 telephone-event/8000
a=fmtp:97 0-15
a=ptime:20
000596: Jan 30 09:10:11.148: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Received:
ACK sip:+49xxxxxxxx30@145.253.139.26:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 2.207.165.116:5060;branch=z9hxxxx0.1
To: <sip:+49xxxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12xxx
From: <sip:+49xxxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
Call-ID: SDxxxx
CSeq: 1 ACK
Max-Forwards: 59
Content-Length: 0
000597: Jan 30 09:10:11.892: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Received:
INVITE sip:+49xxxxxxxx90@145.253.139.26:5060 SIP/2.0
Via: SIP/2.0/UDP 2.207.165.116:5060;branch=z9hxxxxj1.1
To: <sip:016xxxxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
From: <sip:+49xxxxxxxxx30@2.207.165.116>;tag=SDxxxx-0000
Call-ID: BBxxxx53.139.26
CSeq: 102 INVITE
Max-Forwards: 69
Contact: <sip:+49xxxxxxxxx30@2.207.165.116:5060;transport=udp>
Allow: INVITE, ACK, PRACK, CANCEL, BYE, OPTIONS, MESSAGE, NOTIFY, UPDATE, REGISTER, INFO, REFER, SUBSCRIBE
Supported: resource-priority,timer
Session-Expires: 1810;refresher=uas
Min-SE: 600
Accept: application/sdp
P-Early-Media: supported
Content-Type: application/sdp
Content-Length: 181
v=0
o=- 0 7859802 IN IP4 2.207.165.116
s=IMSS
c=IN IP4 2.207.165.116
t=0 0
a=X-UPSPEED
m=audio 27718 RTP/AVP 8 106
a=rtpmap:106 telephone-event/8000
a=sendrecv
a=ptime:20
000598: Jan 30 09:10:11.896: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Sent:
INVITE sip:+49xxxxxxxxx90@2.207.165.116:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 145.253.139.26:5060;branch=z9xxxx
P-Preferred-Identity: <sip:+49xxxxxxx65@145.253.139.26>
From: <sip:+49xxxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12xxx
To: <sip:+49xxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
Call-ID: SDxxx
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Min-SE: 600
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
CSeq: 101 INVITE
Max-Forwards: 70
Timestamp: 1675069811
Contact: <sip:+49xxxxxxxx55@145.253.139.26:5060;transport=tcp>
Expires: 180
Allow-Events: telephone-event
Session-Expires: 1810;refresher=uas
Content-Type: application/sdp
Content-Length: 223
v=0
o=- 1353 4293 IN IP4 145.253.139.26
s=SIP Call
c=IN IP4 145.253.139.26
t=0 0
m=audio 10048 RTP/AVP 8 97
c=IN IP4 145.253.139.26
a=rtpmap:8 PCMA/8000
a=rtpmap:97 telephone-event/8000
a=fmtp:97 0-15
a=ptime:20
000599: Jan 30 09:10:11.898: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 2.207.165.116:5060;branch=z9hxxxj1.1
From: <sip:+49xxxxxxxxxxx30@2.207.165.116>;tag=SDxxx
To: <sip:+49xxxxxxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
Call-ID: BBxxx9.26
CSeq: 102 INVITE
Allow-Events: telephone-event
Content-Length: 0
000600: Jan 30 09:10:11.934: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 200 OK
Via: SIP/2.0/TCP 145.253.139.26:5060;branch=z9xxx
From: <sip:+49xxxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12xxx
To: <sip:+49xxxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
Call-ID: SDxxx
CSeq: 101 INVITE
Timestamp: 1675069811
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Session-Expires: 1810;refresher=uas
Accept: application/sdp
Allow: INVITE, ACK, PRACK, CANCEL, BYE, OPTIONS, MESSAGE, NOTIFY, UPDATE, REGISTER, INFO, REFER, SUBSCRIBE
Contact: <sip:+49xxxxxxxx90@2.207.165.116:5060;transport=tcp>
Content-Type: application/sdp
Content-Length: 172
v=0
o=- 0 0 IN IP4 2.207.165.116
s=IMSS
c=IN IP4 2.207.165.116
t=0 0
m=audio 29414 RTP/AVP 8 97
b=AS:80
a=rtpmap:97 telephone-event/8000
a=ptime:20
a=maxptime:30
000601: Jan 30 09:10:11.938: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 2.207.165.116:5060;branch=z9xxx.1
From: <sip:+49xxxxxxxx30@2.207.165.116>;tag=SDviupa99-f79b94f8-0014-0134-0000-0000
To: <sip:+49xxxxxxxx90@145.253.139.26>;tag=12Fxx
Call-ID: BBxxx
CSeq: 102 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
P-Preferred-Identity: <sip:+49xxxxx65@145.253.139.26>
Contact: <sip:+49xxxxxxxx90@145.253.139.26:5060>
Supported: replaces
Supported: sdp-anat
Session-Expires: 1810;refresher=uas
Require: timer
Supported: timer
Content-Type: application/sdp
Content-Length: 226
v=0
o=- 7795 7428 IN IP4 145.253.139.26
s=SIP Call
c=IN IP4 145.253.139.26
t=0 0
m=audio 10050 RTP/AVP 8 106
c=IN IP4 145.253.139.26
a=rtpmap:8 PCMA/8000
a=rtpmap:106 telephone-event/8000
a=fmtp:106 0-15
a=ptime:20
000602: Jan 30 09:10:11.940: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Sent:
ACK sip:+49xxxxxxx90@2.207.165.116:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 145.253.139.26:5060;branch=z9hxxx
From: <sip:+49xxxxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12xx
To: <sip:+49xxxxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
Call-ID: SDxxx
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0
000603: Jan 30 09:10:11.963: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Received:
ACK sip:+49xxxxxxxx90@145.253.139.26:5060 SIP/2.0
Via: SIP/2.0/UDP 2.207.165.116:5060;branch=z9hxxx
To: <sip:0xxxxxxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
From: <sip:+49xxxxxxxx30@2.207.165.116>;tag=SDviupa99-fxxx
Call-ID: BBxxx
CSeq: 102 ACK
Max-Forwards: 69
Content-Length: 0
000604: Jan 30 09:10:30.022: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Received:
BYE sip:+49xxxxxxx55@145.253.139.26:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 2.207.165.116:5060;branch=z9hxxx1
To: <sip:+49xxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12xxx
From: <sip:+49xxxxxxx90@telekom.de;user=phone>;tag=SD5r6ec01-c5f923a9
Call-ID: SDxxx
CSeq: 2 BYE
Max-Forwards: 69
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Reason: Q.850 ;cause=16 ;text="2"
Content-Length: 0
000605: Jan 30 09:10:30.026: //11757/BB4562A0BE13/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 200 OK
Via: SIP/2.0/TCP 2.207.165.116:5060;branch=z9xxx
From: <sip:+49xxxxxxx90@telekom.de;user=phone>;tag=SDxxx
To: <sip:+49xxxxxxxxx55@hansx001.ngn.vodafone.de;user=phone>;tag=12F7BB33-CCC
Call-ID: SD5xxx
CSeq: 2 BYE
Reason: Q.850;cause=16
Content-Length: 0
000606: Jan 30 09:10:30.026: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Sent:
BYE sip:+49xxxxxxxxx30@2.207.165.116:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP 145.253.139.26:5060;branch=z9xxx
From: <sip:+49xxxxxxxxxx090@145.253.139.26>;tag=12F7B813-1B9D
To: <sip:+49xxxxxxxxx30@2.207.165.116>;tag=SDxxx
Call-ID: BBxxx
Max-Forwards: 70
P-Preferred-Identity: <sip:+49xxxxx65@145.253.139.26>
Timestamp: 1675069830
CSeq: 102 BYE
Reason: Q.850;cause=16
Content-Length: 0
000607: Jan 30 09:10:30.049: //11758/BB45D80BBE18/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 145.253.139.26:5060;branch=z9xxx
From: <sip:+49xxxxxxxxx90@145.253.139.26>;tag=12F7B813-1B9D
To: <sip:+49xxxxxxxxx30@2.207.165.116>;tag=SDviupaxxx0
Call-ID: BB4xxx
Timestamp: 1675069830
CSeq: 102 BYE
Accept: application/sdp
Allow: INVITE, ACK, PRACK, CANCEL, BYE, OPTIONS, MESSAGE, NOTIFY, UPDATE, REGISTER, INFO, REFER, SUBSCRIBE
Contact: <sip:+49xxxxxxx30@2.207.165.116:5060;transport=udp>
Content-Length: 0
