[Asterisk-Users] How to strip a digit

[C F]

It's all in README.variables or here:
http://voip-info.org/wiki/view/Asterisk+variables
use ${EXTEN:1}

On 5/30/06, Erick Perez <eaperezh at gmail.com> wrote:
> I have the following extension to dial outside via SIP
> it's like this:
> phone----asterisk-----internet-----SIP provider----USA
>
> exten => _91NXXNXXXXXX,1,AGI(call_log.agi,${EXTEN})
> exten => _91NXXNXXXXXX,2,Dial(${SIPtrunk}/${EXTEN},55,o)
> exten => _91NXXNXXXXXX,3,Hangup
>
> I want to strip the digit 9 before sending it to the SIP provider.
> Also, any suggestions for the above definition?
> Thanks,
>
> Erick.
>
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