[asterisk-users] Asterisk Double Invite

[Khaled W. Chehab]

Dears

 

My scenario is incoming call to asterisk which asterisk in its term  will
dial it through its trunk .

I recognized that Asterisk is sending two invites to My Trunk GW IP as you
can  see in the debugging below

The first is the default and the second when asterisk receives a 200 OK 

Why Asterisk(B2BUA) is  acting like that,  and from where I can get the
asterisk sip dial call flow 

 

Why Asterisk is sending double invite 

GW CLIENT IP=192.168.5.100

Asterisk IP    =192.168.5.150

Termination GW=192.168.5.200

 

Capturing on eth0

  4.865698 192.168.5.100-> 192.168.5.150 SIP/SDP Request: INVITE
sip:3316234335534 at 192.168.5.150, with session description

  4.871457 192.168.5.150 -> 192.168.5.100SIP Status: 100 Trying

  4.876797 192.168.5.150 -> 192.168.5.100SIP/SDP Status: 183 Session
Progress, with session description

  6.947270 192.168.5.150 -> 192.168.5.200 SIP/SDP Request: INVITE
sip:3316234335534 at 192.168.5.200, with session description

  6.949157 192.168.5.200 -> 192.168.5.150 SIP Status: 100 Trying

 12.759311 192.168.5.200 -> 192.168.5.150 SIP/SDP Status: 183 Session
Progress, with session description

 16.236320 192.168.5.200 -> 192.168.5.150 SIP Status: 180 Ringing

 20.250002 192.168.5.200 -> 192.168.5.150 SIP/SDP Status: 200 OK, with
session description

 20.250395 192.168.5.150 -> 192.168.5.200 SIP Request: ACK
sip:3316234335534 at 192.168.5.200:5060

 20.251267 192.168.5.150 -> 192.168.5.100SIP/SDP Status: 200 OK, with
session description

 20.251752 192.168.5.150 -> 192.168.5.200 SIP/SDP Request: INVITE
sip:3316234335534 at 192.168.5.200:5060, with session description

 20.252986 192.168.5.200 -> 192.168.5.150 SIP Status: 100 Trying

 20.274788 192.168.5.200 -> 192.168.5.150 SIP/SDP Status: 200 OK, with
session description

 20.275143 192.168.5.150 -> 192.168.5.200 SIP Request: ACK
sip:3316234335534 at 192.168.5.200:5060

 20.569819 192.168.5.100-> 192.168.5.150 SIP Request: ACK
sip:3316234335534 at 192.168.5.150

 20.570303 192.168.5.150 -> 192.168.5.100SIP/SDP Request: INVITE
sip:551130338000 at 192.168.5.100, with session description

 20.900485 192.168.5.100-> 192.168.5.150 SIP/SDP Status: 200 OK, with
session description

 20.902604 192.168.5.150 -> 192.168.5.100SIP Request: ACK
sip:551130338000 at 192.168.5.100

 32.468119 192.168.5.200 -> 192.168.5.150 SIP Request: BYE
sip:551130338000 at 192.168.5.150

 32.468411 192.168.5.150 -> 192.168.5.200 SIP Status: 200 OK

 32.468750 192.168.5.150 -> 192.168.5.100SIP/SDP Request: INVITE
sip:551130338000 at 192.168.5.100, with session description

 32.822154 192.168.5.100-> 192.168.5.150 SIP/SDP Status: 200 OK, with
session description

 32.822478 192.168.5.150 -> 192.168.5.100SIP Request: ACK
sip:551130338000 at 192.168.5.100

 32.822928 192.168.5.150 -> 192.168.5.100SIP Request: BYE
sip:551130338000 at 192.168.5.100

 33.140288 192.168.5.100-> 192.168.5.150 SIP Status: 200 OK

 

                

 

 



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