[asterisk-users] OT - In which countries are ISDN subaddressesused ?

[C F]

On Mon, Sep 28, 2009 at 11:51 PM, Alec Davis <sivad.a at paradise.net.nz> wrote:
> I'm interested, and I expect others will be on how you might use it.
>
> Our use on the mantis bug, is to allow 3 ISDN connected sites (no reliable
> internet) each running asterisk, to dial other staff members in the other


You say no reliable internet, if you can get ISDN wouldn't the
providers offer Internet thru the same ISDN Physical links? why are
those not considered reliable? What I mean is what we have here in the
states called Internet over T1, I know I am assuming that your ISDN
links are T/E1 and if that's not the case I know the answer is price.
But if it is T/E1 then I could see a fractional T/E1 where some
channels are used for data as a way better/easier/cheaper way than
subaddressing.

> branches.
> The key to this working is the subaddress being populated with the dailled
> extension, but the main number is called.

This is interesting, wouldn't the provider on both ends have to support this?
While it could work with ISDN lines, I don't think it could ever work
with POTS, since the switches servicing these POTS lines have
dialplans programmed that after (US example) 7 digits - where the
first digit is something other than 0 or 1 and the next 2 digits are
not 11 - it starts calling not listening/taking any additional digits.
In the case where a 1 is dialed it's expecting 10 more digits with the
first 3 having the same rules as the first 3 of the 7 digits, in an
area where 10 digit dialing is required there is usually one more rule
that where the first 3 digits is the same as the area code of the
phone making the call, then it waits for 7 more digits with the first
3 of the 7 having the same rule as the 7 digit dialing above.
In any event you can't really dial more digits than the national
dialing plan when calling national from POTS here in the US.

>
> The dialplan see's the incoming call, checks the calledsubaddress and then
> directs the call to the appropriate extension, all in a split second. No
> IVR, no DDI.
>
> The natural answer is why not use DDI, that's one for each staff member,
> could get a bit expensive.
>
> Alec
> ________________________________
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Olivier
> Sent: Tuesday, 29 September 2009 3:07 p.m.
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] OT - In which countries are ISDN
> subaddressesused ?
>
>
>
> 2009/9/26 Alec Davis <sivad.a at paradise.net.nz>
>>
>> When did that happen? Added to libpri, someone beat me to it.
>
> Hello Alec,
>
> In this question, I was refering to your ongoing work
> I'm sorry if this question let anyone believe this ISDN subaddresswas
> already done and pushed into libpri trunk.
>
> Regards
>
>>
>>
>> Alec Davis
>>
>> ________________________________
>> From: asterisk-users-bounces at lists.digium.com
>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Olivier
>> Sent: Saturday, 26 September 2009 9:06 a.m.
>> To: Asterisk Users Mailing List - Non-Commercial Discussion
>> Subject: [asterisk-users] OT - In which countries are ISDN subaddresses
>> used ?
>>
>> Hi,
>>
>> I've seen this ISDN subaddress feature added to libpri.
>> Which countries are using it ?
>> How is this billed ? Do you have to pay an extra to your telco to benefit
>> from this subaddresses ?
>>
>> Cheers
>>
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>
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