---------- Forwarded message ----------
From: "Jay R. Ashworth" < [EMAIL PROTECTED]>
To: asterisk-users@lists.digium.com
Date: Sat, 30 Sep 2006 14:35:49 -0400
Subject: [asterisk-users] Dial-9 (was Extension Numbering)
On Sat, Sep 30, 2006 at 01:40:09PM +0100, Gordon Henderson wrote:
> Here in the UK, I've installed several small systems without a dial-9 for
> an outside line type thing. The outside line prefix is effectively digit
> zero. (which is preserved and dialled on the outgoing zap lines)
>
> There is an exception for 999, and I still provide the 9 service too for
This reminds me of something that's bothered me for years, and I'm
curious how people deal with it. This is semi-US specific; don't say
you weren't warned (or that I'm Americo-centric :-).
Using 9 as a dialplan prefix for accessing outside dialtone has one
*major* problem: 911.
You don't *really* want to (and I believe, legally, you can't) require
people to dial 9-911. But, this leads you to an alternate problem.
If you define 911 in your internal dialplan as a cut-through to dial the
local PSAP over a standard local voice line (and here, I'm assuming you
have some; VoN 911 is a topic I entirely don't want to get into at the
moment), then eventually you're going to have either a) a touchtone<tm>
dial that stutters on it's 1 key, or b) a human who does it, and they're
going to dial 9-1-800-555-1212, and find themselves talking the EMS
instead of directory assistance... and no one will understand why...
and the EMS people will be mad at *you*.
I know that this has been a problem for traditional PBXen for years,
and the only solution I've ever been able to see is "use 8 as your
outdial prefix"... but no one seems to ever do that, even 20 years on.
Is this really not a problem?
Cheers,
-- jra
--
Jay R. Ashworth [EMAIL PROTECTED]
Designer Baylink RFC 2100
Ashworth & Associates The Things I Think '87 e24
St Petersburg FL USA http://baylink.pitas.com +1 727 647 1274
"That's women for you; you divorce them, and 10 years later,
they stop having sex with you." -- Jennifer Crusie; _Fast_Women_
[context for out-bound numbers]
;
;Check for incoming calls…
;
; Domestic e.164 US numbers go out unchanged.
;
exten => _1XXXXXXXXXX,1,Goto(outgoing,${EXTEN},1)
;
;
; Check for 10 digit NANP
exten => _XXXXXXXXXX,1,SetVar(PREFIX=1)
exten => _XXXXXXXXXX,2,Goto(outgoing,${PREFIX}${EXTEN},1)
; Check for 7 digit NANP
; Then add "1" and the location area code
;
exten => _XXXXXXX,1,SetVar(PREFIX=1925)
exten => _XXXXXXX,2,Goto(outgoing,${PREFIX}${EXTEN},1)
; Check for emergency numbers
;
exten => 911,1,Goto(emergency,911,1)
;
; Check for other special numbers and direct to repective contexts.
;
;
[outgoing]
exten => _X.,1,ChanIsAvail(${PSTNCHANNEL})
exten => _X.,2,NoOp(AvailChannel=${AVAILCHAN})
exten => _X.,3,Set(DialChannel=${CUT(AVAILCHAN,,1)})
exten => _X.,4,Dial(${DialChannel}/${EXTEN},100)
exten => _X.,5,Congestion
exten => _X.,105,Congestion
Hope this helps.
_______________________________________________ --Bandwidth and Colocation provided by Easynews.com --
asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
