asterisk users - Nov 2005 - Context restrictions for long distance access, examples not clear?

Hi,

I am trying to limit access to long distance in my dial plan but I am 
really confused by the examples I am seeing (perhaps I am 
misunderstanding how context work). The following example was given in a 
previous posting.

[extensions]
exten => 8478414198,1,Dial(SIP/8478414198)
exten => 8478414198,2,Hangup
exten => 8478414199,1,Dial(SIP/8478414199)
exten => 8478414199,2,Hangup


[local]
exten => _XXXXXX,1,Dial(SIP/[EMAIL PROTECTED])
exten => _XXXXXX,2,Congestion


[long-distance]
exten => _1NXXNXXXXXX,1,Dial(SIP/[EMAIL PROTECTED])
exten => _1NXXNXXXXXX,2,Congestion


[local-users]
exten => 8478414198,1,Dial(SIP/8478414198)
exten => 8478414198,2,Hangup
include => local
include => extensions


[long-users]
exten => 8478414199,1,Dial(SIP/8478414199)
exten => 8478414199,2,Hangup
include => local
include => long-distance
include => extensions


What I do not understand is how this restricts access. Since the context 
'extensions' is included in both would that not give all users access to
local and long distance??? Or is there some sort of order of entry thing 
with context??? I supposed that zapata.conf would include a reference to 
extensions - that would be the only reason for having the extension 
context... Also since the extensions appear under local-users and 
long-users followed by the include 'extensions' wouldn't this
generate
an error since the extension already exist (ie in local users has the 
extension 8478414198 with a priority of 1 and the include statement 
means that another extension 8478414198 with a priority of 1 in the same 
context 'local-users')????

Thanks

What context are your phones in? (context= in sip or iax config)

If your phones are in the local-users context, they will be able to dial
numbers found in local-users, extensions and local. 

If your phones are in the long-users context, they will be able to dial
numbers in long-users, local, long-distance and extensions. 

Extensions in a context are handled in the order they are listed. In
this case, I would remove the entries which are also in extensions from
the local-users and long-users extensions. 

-Jonathan
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-
> bounces@lists.digium.com] On Behalf Of Chuck Bunn
> Sent: Friday, November 18, 2005 12:00 PM
> To: Asterisk - Users
> Subject: [Asterisk-Users] Context restrictions for long distance
> access,examples not clear?
> 
> Hi,
> 
> I am trying to limit access to long distance in my dial plan but I am
> really confused by the examples I am seeing (perhaps I am
> misunderstanding how context work). The following example was given in
a
> previous posting.
> 
> [extensions]
> exten => 8478414198,1,Dial(SIP/8478414198)
> exten => 8478414198,2,Hangup
> exten => 8478414199,1,Dial(SIP/8478414199)
> exten => 8478414199,2,Hangup
> 
> 
> [local]
> exten => _XXXXXX,1,Dial(SIP/[EMAIL PROTECTED])
> exten => _XXXXXX,2,Congestion
> 
> 
> [long-distance]
> exten => _1NXXNXXXXXX,1,Dial(SIP/[EMAIL PROTECTED])
> exten => _1NXXNXXXXXX,2,Congestion
> 
> 
> [local-users]
> exten => 8478414198,1,Dial(SIP/8478414198)
> exten => 8478414198,2,Hangup
> include => local
> include => extensions
> 
> 
> [long-users]
> exten => 8478414199,1,Dial(SIP/8478414199)
> exten => 8478414199,2,Hangup
> include => local
> include => long-distance
> include => extensions
> 
> 
> What I do not understand is how this restricts access. Since the
context
> 'extensions' is included in both would that not give all users
access
to
> local and long distance??? Or is there some sort of order of entry
thing
> with context??? I supposed that zapata.conf would include a reference
to
> extensions - that would be the only reason for having the extension
> context... Also since the extensions appear under local-users and
> long-users followed by the include 'extensions' wouldn't this
generate
> an error since the extension already exist (ie in local users has the
> extension 8478414198 with a priority of 1 and the include statement
> means that another extension 8478414198 with a priority of 1 in the
same
> context 'local-users')????
> 
> Thanks
> 
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