[asterisk-users] How asterisk use pri channel

[satish patel]

Awesome!!

Do you know if i want to use only specific channel for call out then how do i write dialplan ? I want to use channel 25 specific for my extension 

DAHDI/25/XXXXXXXX   or DAHDI/i2/25/XXXXXXXXXXX

> Date: Wed, 8 Jun 2011 17:25:44 -0500
> From: rmudgett at digium.com
> To: asterisk-users at lists.digium.com
> Subject: Re: [asterisk-users] How asterisk use pri channel
> 
> > We have two pri line and I want to see how asterisk distribute
> > outgoing call per channels
> > 
> > I meant it use first last channel 47 or it will use first channel?
> > 
> > Or it will allocate dynamically ?
> 
> Extracted from chan_dahdi.c:
> 
> Dial(DAHDI/pseudo[/extension[/options]])
> Dial(DAHDI/<channel#>[c|r<cadance#>|d][/extension[/options]])
> Dial(DAHDI/<subdir>!<channel#>[c|r<cadance#>|d][/extension[/options]])
> Dial(DAHDI/i<span>[/extension[/options]])
> Dial(DAHDI/[i<span>-](g|G|r|R)<group#(0-63)>[c|r<cadance#>|d][/extension[/options]])
> 
> i - ISDN span channel restriction.
>     Used by CC to ensure that the CC recall goes out the same span.
>     Also to make ISDN channel names dialable when the sequence number
>     is stripped off.  (Used by DTMF attended transfer feature.)
> 
> g - channel group allocation search forward
> G - channel group allocation search backward
> r - channel group allocation round robin search forward
> R - channel group allocation round robin search backward
> 
> c - Wait for DTMF digit to confirm answer
> r<cadance#> - Set distintive ring cadance number
> d - Force bearer capability for ISDN/SS7 call to digital.
> 
> All are valid for v1.8 and trunk.  The i<span> option and <subdir>! option are not valid earlier than v1.8.
> 
> Richard
> 
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