asterisk users - May 2004 - Stripping numbers at the end of a dial pattern => extension

Hello,
>From: "Hermann Wecke" <hermann@wecke.com>
>Subject: [Asterisk-Users] Stripping numbers at the end of a dial pattern
=>
>extensions.conf
>Date: 8 May 2004 22:03:57 +0000
>
>Is it possible to strip some numbers from the *end* of a number?
>
>I know that ${EXTEN:1} will remove 1 position from the beggining... but
>how to remove N numbers from the end?
Use ${variable:pos:n}. This will give you 'n'  digits from the position 
'pos'.
exten => 12345, 1, SetVar,MYDIGITS=${EXTEN:2,3} ; MYDIGITS = 2345.
Also, there is Substring application available with Asterisk, but it is 
deprecated i think...

HTH, Girish

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Hi,

Replying to my own mail. There is a mistake, The syntax is incorrect:
>From: "Girish Gopinath" <gopinath_girish@hotmail.com>
>exten => 12345, 1, SetVar,MYDIGITS=${EXTEN:2,3} ; MYDIGITS = 2345.
Correct: exten => 1234, 1, SetVar,MYDIGITS=${EXTEN:2:3} ; MYDIGITS = 234.

My apologies...

Girish

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