[asterisk-users] Newbie Dialplan: Best Practice in using Context - Do not use Default??

[Paul Hales]

With an ISDN10/20/30/etc, I would just put all the lines into an
'incoming' context - and make sure that incoming context doesn't have
any includes (unless you really need them...)

PaulH


On Tue, 2008-05-13 at 09:43 +1000, Lee, John (Sydney) wrote:
> In "The future of Telephony", it says "... We should also note for
> security's sake you should always make sure that your [incoming] context
> never allows outbound dialing.  (If by chance it did, people could dial
> into your system and make outbound toll calls that would be charged to
> you!)
> 
> The book was demonstrating using a PSTN environment and the zapata.conf
> was something like:
> context=internal
> signaling=fxo_ks
> channel=>1
> 
> context=incoming
> signaling=fxs_ks
> channel=>2
> 
> In PRI environment, does it mean that we have to purposely separate the
> say ISDN 20 channels into [internal] and [incoming] as well?  
> This would not make sense to me as ISDN uses a one port card to contain
> multiple channels while the ports of a say TDM400P refer to each
> channel.
> 
> If I just define a [default] context for a PRI environment, is this
> insecure?
> 
> Can someone please enlighten me on this?
> 
> 
> 
> 
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