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Home > Forums > Wiring Closet > Phone Systems > Digium: Asterisk Forum

removing prefixes

thread1536-1612058
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johnnyasterisk (IS/IT--Management)
14 Jul 10 18:13
I have some calls that come into asterisk as a normal number in the format:

09X XXX XXX

However depending on the carrier i sometimes get

03539X XXX XXX

I want a way to remove the 353 ONLY if it is received in that format...


Any Ideas?
busster (TechnicalUser)
15 Jul 10 10:03
This is what I did on a bandwidth.com trunk to strip the "+" sign from what they were sending.


[from-bandwidth-com]
exten => _X.,1,Noop(Entering from-bandwidth-com context)
exten => _X.,n,Set(CALLERID(number)=${CALLERIDNUM:1})
include => from-trunk

Go to your bandwidth.com trunk and set the context to:

context=from-bandwidth-com

You would just change the line to

exten => _X.,n,Set(CALLERID(number)=${CALLERIDNUM:3})

to strip off three characters.
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