asterisk users - Jul 2004 - How to make * don't strip the leading 0

Hi folks!

Is it possible to tell asterisk not to strip the leading 0 of *incoming*
MSNs? I use asterisk with i4l and whenever I get a call from an
long-distance party, the leading 0, which should be there according the
german numbering, is not. So if I get a call from a mobile phone
0177-1234567 should be displayed, but 177-1234567 is displayed. I double
checked if I've forgotten to remove an option to strip the first digit
of incoming calls and found nothing.

The wiki and the mailinglist archives can't enlight me either, why
asterisk behaves like this, or how I can turn it off. So if someone
could give me a hint, I would be very delighted!

Best regards

Kai

-- 
Kai Militzer                 WESTEND GmbH  |  Internet-Business-Provider
Technik                      CISCO Systems Partner - Authorized Reseller
                             L?tticher Stra?e 10      Tel 0241/701333-11
km@westend.com               D-52064 Aachen              Fax 0241/911879

Kai Militzer schrieb:
...
> Is it possible to tell asterisk not to strip the leading 0 of *incoming*
> MSNs? I use asterisk with i4l and whenever I get a call from an
> long-distance party, the leading 0, which should be there according the
> german numbering, is not. So if I get a call from a mobile phone
> 0177-1234567 should be displayed, but 177-1234567 is displayed. I double

Hi,

that's rather your ISDN equipment than asterisk, who
strips the leading 0.
("National numbering scheme")

Look at isdnrep! Probably you'll find the same numbers
without leading 0 there. I4L forwards those 0-less numbers
to asterisk, and asterisk takes them as they are.

chap_capi for my AVM Fritz card does display numbers with
leading 0.

I have currently the same problem with my E1 card and I wonder,
how I can get asterisk to append a leading 0 before forwarding
the call, for my IP phones show the "correct" callee number
with leading 0.


Roger.

Kai Militzer wrote:
> Hi folks!
> 
> Is it possible to tell asterisk not to strip the leading 0 of
> *incoming* MSNs? I use asterisk with i4l and whenever I get a call
> from an long-distance party, the leading 0, which should be there
> according the german numbering, is not. So if I get a call from a
> mobile phone 0177-1234567 should be displayed, but 177-1234567 is
> displayed. I double checked if I've forgotten to remove an option to
> strip the first digit of incoming calls and found nothing.      
> 
> The wiki and the mailinglist archives can't enlight me either, why
> asterisk behaves like this, or how I can turn it off. So if someone
> could give me a hint, I would be very delighted!  
> 
> Best regards
> 
> Kai
Coud it be that your provider is striping "0"?

On Mon, 12 Jul 2004 14:57:42 +0200, Kai Militzer <km@westend.com>
wrote:
> Hi folks!
> 
> Is it possible to tell asterisk not to strip the leading 0 of *incoming*
> MSNs? I use asterisk with i4l and whenever I get a call from an
> long-distance party, the leading 0, which should be there according the
> german numbering, is not. So if I get a call from a mobile phone
> 0177-1234567 should be displayed, but 177-1234567 is displayed. I double
> checked if I've forgotten to remove an option to strip the first digit
> of incoming calls and found nothing.
> 
> The wiki and the mailinglist archives can't enlight me either, why
> asterisk behaves like this, or how I can turn it off. So if someone
> could give me a hint, I would be very delighted!
You could try adding the leading zero.

For example, I have:
[incoming-isdn]

[incoming-isdn]

exten => msn,1,NoOp
exten => msn,2,SetCallerID(0${CALLERIDNAME} <00${CALLERIDNUM}>)
exten => msn,3,GotoIf,$[${CALLERIDNUM} = 000]?200:4
exten => msn,4,NoOp
exten => msn,5,Goto(local-extensions,7000,1)
exten => msn,200,SetCallerID(Private <>)
exten => msn,201,Goto(4)

(my number has been replaced with msn)

This adds the leading 0 to calleridname, and 00 to calleridnum (so it
included the '0' needed to dial externally). It has an unfortunate
side effect of setting the caller ID number to '000' if the telco
doesn't send any caller ID (which also happens to be the emergency
number here in Australia), so I have the GotoIf to catch that
condition and replace it with Private.

I don't know how that works for incoming International calls (never
tested), but it works just fine for national calls.

-Shaun