[asterisk-users] Right way to prevent analog channel from answering the phone?

Eric "ManxPower" Wieling eric at fnords.org
Wed Sep 27 08:15:22 MST 2006

What is wrong with using the WaitForRing app?

Rich Adamson wrote:
> Nick Ellson wrote:
>> I am in the process of learning my A1200P, and i would like an elegant 
>> way to prevent it from answering the phone, but still make outbound 
>> calls. I tried zap destroy channel 1 (which worked, but pissed off 
>> Asterisk ;)
>> Is there a more elegant way to tell it to answer/not answer on command?
> I don't have an A1200P, but most zap channel interfaces are built to not 
> answer an incoming call unless you specifically configure asterisk to do 
> it.
> There are only two basic conditions under which an incoming call will be 
> answered:
> 1. by including the "answer" statement, like:
>     exten => 3556,1,Answer
>     exten => 3556,2,Wait,1
>     exten => 3556,3,Authenticate(3017)
>     exten => 3556,4,Meetme(3556|pM)
> 2. a SIP phone (or other phone) user picks up the handset.
> So, in zapata.conf you have definitions for each of the A1200P ports, 
> and one of the items in those definitions is "context=<something>". If 
> that context statement points to some non-existent context name (like 
> context=xyz), there is nothing that would answer the incoming call.
> If the context=<something> points to a real context (in 
> extensions.conf), then review that context to ensure there is nothing 
> there to answer the incoming call. (Note: some asterisk applications 
> will automatically answer incoming calls.)
> You could also define that context and include statements like:
> [no-answer]
> exten => _X.,1,Hangup
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