[Asterisk-Users] Dial Plan Problem with extensions ringing multiple phones connected on different * servers

[Benoit Panizzon]

Hi all

I wonder how to solve this issue:

Asterisk1: 2 BRI Cards, TE and NT Mode.
- ISDN In (From telco)
- ISDN out (to a phone) (Zap/g6)

exten => 999999,1,Dial(IAX2/key at asterisk2/999999&Zap/g6/999999)

Asterisk2: Just different kind of SIP Connections.

exten => 999999,1,Dial(SIP/999999,20,r)
exten => 999999,n,Voicemail(u999999)
exten => 999999,n,Hangup

Now when a call commes in via ISDN on the First Asterisk and both phones are 
reachable both do ring. The one picked up get's the call.

Now when the SIP phone is busy on Asterisk2 the call goes in, Asterisk2 does 
not know about the other phone ringing on Asterisk1 and redirects the call 
immediately to the voicemail. Nobody has a chance to pick up Zap/g6/999999 on 
Asterisk1.

Any idea how to solve that issue? I tought about switch => but I don't manage 
to find any docs about how to exactly use that statement.


Mit freundlichen Grüssen

Benoit Panizzon
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