[asterisk-users] Overlap dialing via SIP

[Rizwan Hisham]

i can see from your dialplan that all the extensions except international
extension are of 12 digits. International extensions are of 13 or more
digits. here is what you can do with the international extensions, all other
extensions remain the same:

[084x]
exten => _9084XXXXXXXX,1,Macro(dialout-pstn)

[outbound-national]
exten => _90[1-2]XXXXXXXXX,1,Macro(dialout-pstn)

[087x]
exten => _9087XXXXXXXX,1,Macro(dialout-pstn)

[0906]
exten => _90906XXXXXXX,1,Macro(dialout-pstn)

[outbound-international]
exten => _900XXXXXXXXXX.,1,Dial(SIP/${OUTBOUNDTRUNK@${EXTEN}})
exten => _900XXXXXXXXXX.,2,Congestion

If you see closely i have put a dot at the end of each international
extension, this will allow you to dial atleast 13 digits. so no need to
crate extension of every length.


On Mon, Jul 21, 2008 at 9:10 PM, Ben Thompson <bt4 at york.ac.uk> wrote:

> Hi
>
> I have set up an asterisk system which allows the use of Overlap Dialing
> from
> SIP handsets. In order to do this I had to list the various patterns of
> numbers
> which can be dialed in the UK. We also dial with a prefix of '9' for and
> outside
> line so much of my dialplan looks like this :-
>
> [084x]
> exten => _9084XXXXXXXX,1,Macro(dialout-pstn)
>
> [outbound-national]
> exten => _90[1-2]XXXXXXXXX,1,Macro(dialout-pstn)
>
> [087x]
> exten => _9087XXXXXXXX,1,Macro(dialout-pstn)
>
> [0906]
> exten => _90906XXXXXXX,1,Macro(dialout-pstn)
>
> ...
>
>
> I was able to download the mappings for 0800 numbers and other special
> ranges
> from the ofcom website and I have incorporated these. For international
> dialing
> I have not been able to find an easy way of doing this so I created the
> folling
> contexts whcih make use of the WaitExten feature :-
>
> [outbound-international]
> exten => _900XXXXXXXXXX,1,Set(oldexten=${EXTEN})
> exten => _900XXXXXXXXXX,2,Goto(international-number-length-check,s,1)
>
> [international-number-length-check]
> exten => s,1,Answer
> exten => s,2,WaitExten(8)
>
> exten => _X,1,Set(enddigits=${EXTEN})
> exten => _X,2,NoOp(${TIMESTAMP} ok 13 digits - we dial
> ${oldexten}${enddigits})
> exten => _X,3,Dial(${OUTBOUNDTRUNK}/${oldexten}${enddigits})
> exten => _X,4,Congestion()
> exten => _X,104,Busy()
>
> exten => _XX,1,Set(enddigits=${EXTEN})
> exten => _XX,2,NoOp(${TIMESTAMP} ok 14 digits - we dial
> ${oldexten}${enddigits})
> exten => _XX,3,Dial(${OUTBOUNDTRUNK}/${oldexten}${enddigits})
> exten => _XX,4,Congestion()
> exten => _XX,104,Busy()
>
> exten => _XXX,1,Set(enddigits=${EXTEN})
> exten => _XXX,2,NoOp(${TIMESTAMP} ok 15 digits - we dial
> ${oldexten}${enddigits})
> exten => _XXX,3,Dial(${OUTBOUNDTRUNK}/${oldexten}${enddigits})
> exten => _XXX,4,Congestion()
> exten => _XXX,104,Busy()
>
> exten => t,1,Dial(${OUTBOUNDTRUNK}/${oldexten})
> exten => t,2,Congestion()
> exten => t,102,Busy()
>
>
> This works fairly well but I have noticed that occasionally the WaitExten
> feature does
> not seem to catch the first digits if they are dialed too quickly. It is
> almost as if
> there is a some sort of delay and the thirteenth digit is sometimes missed.
>
> Can anyone suggest why WaitExten might be ocasionally missing a digit or
> can anyone think
> of a better way of doing this?
>
> Thanks
>
> Ben Thompson
>
>
>
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-- 
Best Regards
Rizwan Hisham
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