4.
Technical Data
4.5. SIP Busy message while incoming call in case receiver is on another call
Busy message sent by SIP Trunk 2 when receiver is currently on another call,
SIP Trunk 2
xxx.xxx.xxx.xxx
your IP-PBX
000.000.000.000
IP address of
SIP Trunk 2
CallerID
INVITE
From: "
080AAAAXXXX
" <sip:
080AAAAXXXX"
@
xxx.xxx.xxx.xxx
>;tag=as0f1a5f0c
Recipient
IP address of
your IP-PBX
SIP Trunk 2
server
1
2
From: "
080AAAAXXXX
" <sip:
080AAAAXXXX"
@
xxx.xxx.xxx.xxx
>;tag=as0f1a5f0c
To: <sip:
0312345678
@
000.000.000.000
>
Call-ID: 1aa4d60711e0817d731834f474d958b0@
xxx.xxx.xxx.xxx
100 Trying
From: "
080AAAAXXXX
" <sip:
080AAAAXXXX
@
xxx.xxx.xxx.xxx
>;tag=as0f1a5f0c
To: <sip:
0312345678
@
000.000.000.000
>
Call-ID: 1aa4d60711e0817d731834f474d958b0@
xxx.xxx.xxx.xxx
3
486 Busy Here
From: "
080AAAAXXXX
" <sip:
080AAAAXXXX
@
xxx.xxx.xxx.xxx
>;tag=as0f1a5f0c
To: <sip:
0312345678
@
000.000.000.000
>
Call-ID: 1aa4d60711e0817d731834f474d958b0@
xxx.xxx.xxx.xxx
ACK
From: "
080AAAAXXXX
" " <sip:
080AAAAXXXX
@
xxx.xxx.xxx.xxx
>;tag=as0f1a5f0c
figure 4.5 SIP flow including Busy message while incoming call
4
From: "
080AAAAXXXX
" " <sip:
080AAAAXXXX
@
xxx.xxx.xxx.xxx
>;tag=as0f1a5f0c
To: <sip:
0312345678
@
000.000.000.000
>
Call-ID: 6dd7b12f1438e1572cae057f274419e6@
000.000.000.000
figure 4.5 SIP flow including Busy message while incoming call
44