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prepend area code digits per-extension?

shazbot996
Posts: 37
 Member Since:
2007-12-05
Submitted by shazbot996 on Thu, 12/06/2007 - 12:45pm.

I've looked all over, and I can't seem to find any HOWTO's that cover this:

How can I configure a unique dialplan addition at the extension level? I have a shared Trixbox that I have several different business customers using out of different area codes. To date, I have edited the dialplan of the local ATA or equipment to prepend the area code, but I want to do this centrally, and eliminate the step with the equipment!

How can I prepend area code per extension? I guessed that somehow I could do it by creating a custom context, so maybe I'm part of the way there...

I have created a context in extensions_custom.conf called "from-areacode" that doesn't do anything at the moment:

[from-areacode]
**insert cool "add area code to string" line here**
include => from-internal

I then changed the context of the extension from "from-internal" to "from-areacode".

Am I on the right track? And what exten => ... etc. line would I use to add an area code? I'm not too experienced in the dialplan side of things. Any help would be appreciated.

Thanks in advance!!

‹ external caller did not receive the hang up signal Queue procedure ›

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jmullinix
Posts: 837
 Member Since:
2006-06-04
This is a little crazy. It
Thu, 12/06/2007 - 6:58pm

This is a little crazy. It seems that ${exten} and ${EXTEN} are different variables, even though all of the manuals say they are the same. Here is my code.

[from-areacode]
exten => _x.,1,noop(${EXTEN})
exten => _x.,n,set(EXTEN="77"${EXTEN})
exten => _X.,n,goto(from-internal,${exten},1)

What is crazy here is that I set the ${EXTEN} variable, it also sets ${exten} variable, but when I used ${EXTEN} in the go to statement, it fails. Since I could not make the ${EXTEN} variable change, I had to use a goto instead of an include.

Anyway, replace the "77" with your area code to insert, like "301". The quotes are important.

--

John

In search of Dundi Peers in Lake Wales, FL and Baltimore, MD.
http://www.cohutta.com
1-706-632-3343 - E164 friendly (Use your friendly ENUM trunk today.)
Dial Plan helper http://www.cohutta.com/npanxx.php


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shazbot996
Posts: 37
 Member Since:
2007-12-05
hmmm
Thu, 12/06/2007 - 7:10pm

err, that reads like it is arbitrarily adding the extra digits to every string dialed. In my case, I'm only wanting to match 7 digits dialed. I presume I would replace the _x. with, maybe _xxxxxxx (omitting the ".") to run this rule against only 7 digit extension strings?

Just a guess, would I modify this code thusly:

[from-areacode]
exten => _xxxxxxx,1,noop(${EXTEN})
exten => _xxxxxxx.,n,set(EXTEN="77"${EXTEN})
exten => _X.,n,goto(from-internal,${exten},1)

?? obviously I want the last rule to run against all dialed. I dunno - I'll play with this and we'll see. Going the right direction - thanks so much for your input.


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shazbot996
Posts: 37
 Member Since:
2007-12-05
Just tried it...
Thu, 12/06/2007 - 7:15pm

just tried it, and the "" are hurting us on line 2 of the context

[from-areacode]
exten => _x.,1,noop(${EXTEN})
exten => _x.,n,set(EXTEN=77${EXTEN})
exten => _X.,n,goto(from-internal,${exten},1)

removing the quotes as above made it work, at least for the arbitrary prepend context above - now I just need to tweak it to conditionally prepend the digits only if xxxxxxx is matched... stay tuned...


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shazbot996
Posts: 37
 Member Since:
2007-12-05
For Posterity...
Thu, 12/06/2007 - 7:49pm

OK, seems to work as I needed it to rewritten as such:

[from-555]
exten => _XXXXXXX,1,noop(${EXTEN})
exten => _XXXXXXX,n,set(EXTEN=555${EXTEN})
exten => _XXXXXXX,n,goto(from-internal,${exten},1)
include => from-internal

If the extension is a 7 digit dial, it runs the scripts to prepend the 555, otherwise it drops to the from-internal context, and normal routing ensues.

This also solved a secondary need of mine, and maybe it'll help someone else. I'll do the same to enable a denser capacity of a shared "Hosted PBX" box that multiple customers share. To date, I have been assigning 5 digit extensions so as not to step on each other's toes extension-wise. However, many of my smaller customers don't like the 5 digit extensions, and would prefer 2 or 3 only. Clearly I can't do this, but I can use this trick to prepend the first 2 or 3 digits into their dial patterns, and allow them to ostensibly use a abbreviated dialing for their back-end extension calling. Cool stuff.

Thanks so so much for this set(nugget=gold) tidbit... thats exactly the tip I needed.


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mjoyner
Posts: 142
 Member Since:
2007-06-11
Custom Outbound Routes via this too I think!
Fri, 12/07/2007 - 10:55am

Couldn't one also use this approach to have certain "special" extensions to be able to dial "long distance" w/o having a pin code while requiring stock extensions to have a pin code?


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shazbot996
Posts: 37
 Member Since:
2007-12-05
Certainly...
Fri, 12/07/2007 - 11:55am

Sure thing

having a "privileged-user" context could easily do this...

privileged-user can allow any calls straight out...

standard-user checks and, for instance, sends all _1NXXNXXXXXX calls to the context where you are enforcing PIN codes...


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jmullinix
Posts: 837
 Member Since:
2006-06-04
I have a couple of
Sat, 12/08/2007 - 7:46am

I have a couple of extensions that are in the houses of friends of mine. I use this code to prevent them from calling 911 through my house. You can modify this code to prevent long distance calls.

[from-wan]
exten => 911,1,Noop(Remote extension cannot dial 911)
exten => 911,n,system(echo You may not dial 9 1 1 from this extension. > /tmp/out.txt)
exten => 911,n,system(echo Please use a land based phone >> /tmp/out.txt)
exten => 911,n,system(cat /tmp/out.txt | text2wave -o /tmp/my_new_sound.ulaw -otype ulaw)
exten => 911,n,Playback(/tmp/my_new_sound)
exten => 911,n,zapateller()
exten => 911,n,hangup()
include => from-internal

You might be able to do it this way:

[from-block-ld]
exten => _1XXXXXXXXXX,1,hangup()
exten => _011x.,1,hangup()
include => from-internal

You may want to make this code a little more polite, but that will get you started.

--

John

In search of Dundi Peers in Lake Wales, FL and Baltimore, MD.
http://www.cohutta.com
1-706-632-3343 - E164 friendly (Use your friendly ENUM trunk today.)
Dial Plan helper http://www.cohutta.com/npanxx.php


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marianne
Posts: 1
 Member Since:
2008-03-17
Warning: fread(): Length parameter must be greater than 0.
Tue, 03/18/2008 - 7:57am

hi .. can anyone please help.. when i click on the packages i got this error

Warning: fread(): Length parameter must be greater than 0. in /var/www/html/maint/includes/functions/genYumArray.php on line 17

Warning: fread(): Length parameter must be greater than 0. in /var/www/html/maint/includes/functions/genYumArray.php on line 21

Warning: fread(): Length parameter must be greater than 0. in /var/www/html/maint/includes/functions/genYumArray.php on line 196


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