[asterisk-dev] DAHDI FXO port only recognizes the "S" extension

[Tzafrir Cohen]

On Wed, Sep 29, 2010 at 05:46:47PM +0800, Songtao Yu wrote:
> 
> Hi All,
> 
> When I tried to write my dial plan as below for my FXO port, which connects one PSTN line:
> 
> [from-pstn]
> exten =>s,1,Answer()
> exten =>s,n,Wait(1)
> exten =>_X.,1,Dial(DAHDI/1)
> exten =>_X.,n,Hangup
> 
> I got the following message:
> Connected to Asterisk 1.6.2.13 currently running on fax (pid = 8154)
> Verbosity was 0 and is now 4
>     -- Starting simple switch on 'DAHDI/1-1'
>     -- Executing [s at from-pstn:1] Answer("DAHDI/1-1", "") in new stack
>     -- Executing [s at from-pstn:2] Wait("DAHDI/1-1", "1") in new stack
>     -- Auto fallthrough, channel 'DAHDI/1-1' status is 'UNKNOWN'
>     -- Hungup 'DAHDI/1-1'
> 
> But if I changed the "_X." to "S" extension, I can get the whole thing to work well:
> [from-pstn]
> exten =>s,1,Answer()
> exten =>s,n,Wait(1)
> exten =>s,n,Dial(DAHDI/3)
> exten =>s,n,Hangup
> 
> Would you please let me which casuses this issue?

With FXS/FXO signalling the CO does not send the FXO ("phone") the
dialed number. Hence Asterisk just puts the call on extension 's'.

-- 
               Tzafrir Cohen
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