[Linphone-users] Multiple calls in progress answer problem

[Stian Hvatum]

Hello,
I have a problem with linphone and answering calls when multiple callers 
originate to the linphone extension at once.

My setup is like this:
My PBX is an CentOS 5.5 with Asterisk 1.8 and FreePBX 2.7.
There are three Linphone clients (3.4.3, 2x Windows 7 (x64) and 1x 
Windows XP) and two hardware phones (Aastra).
Everything seems good, except that if two or more agents calls the same 
Linphone-client, the Linphone-client cannot answer any of them. This is 
true for both the graphical client and the CLI-client.

If I terminate one of the incomming calls, I can answer the secound one.

I have tried different clean installs, same failure on both WinXP and 
Win7. Aastra-phones are able to answer if they are presented with 
multiple callers at once.

I couldn't find any one else with the same problem in the mailing-lists 
or elsewhere, but I thought that there may be any one out there has 
experienced the same and maybe has a solution?

Thanks!
Stian

------------------------------------------------------------------
Output from CLI:
C:\Program Files (x86)\Linphone\bin>linphonec.exe
Ready
Warning: video is disabled in linphonec, use -V or -C or -D to enable.
linphonec> Registration on sip:192.168.253.20 successful.
linphonec> "Stian" <sip:address@hidden> is contacting you.
linphonec> Receiving new incoming call from "Stian" 
<sip:address@hidden>, assigned id 1
answer
Connected.
linphonec> Call 1 with "Stian" <sip:address@hidden> connected.
Media streams established with "Stian" <sip:address@hidden> for call 1.
linphonec> Call terminated.
linphonec> Call 1 with "Stian" <sip:address@hidden> ended.
"Stian" <sip:address@hidden> is contacting you.
linphonec> Receiving new incoming call from "Stian" 
<sip:address@hidden>, assigned id 2
"204" <sip:address@hidden> is contacting you.
linphonec> Receiving new incoming call from "204" 
<sip:address@hidden>, assigned id 3
linphonec> answer 2
Fail to accept call 2
linphonec> answer 3
Fail to accept call 3
linphonec> answer
Multiple calls in progress, please specify call id.
Syntax error.
'answer' : Answer the current incoming call
'answer <call id>' : Answer the call with given id

linphonec> pause 2
linphonec> answer 3
Fail to accept call 3
linphonec> calls
ID              Destination                             Status
---------------------------------------------------------------------
2       "Stian" <sip:address@hidden>                        Pending
3       "204" <sip:address@hidden>                  Pending
linphonec> No response.
linphonec> Call 2 with "Stian" <sip:address@hidden> error.
No response.
linphonec> No response.
linphonec> Call 3 with "204" <sip:address@hidden> error.
No response.
linphonec> "Stian" <sip:address@hidden> is contacting you.
linphonec> Receiving new incoming call from "Stian" 
<sip:address@hidden>, assigned id 4
"204" <sip:address@hidden> is contacting you.
linphonec> Receiving new incoming call from "204" 
<sip:address@hidden>, assigned id 5
linphonec> terminate 5
Call ended
linphonec> Call 5 with "204" <sip:address@hidden> ended.
linphonec> answer 4
Connected.
linphonec> Call 4 with "Stian" <sip:address@hidden> connected.
Media streams established with "Stian" <sip:address@hidden> for call 4.
linphonec> terminate 4
Call ended
linphonec> Call 4 with "Stian" <sip:address@hidden> ended.
linphonec>