[c-nsp] Aggregation for multiple ISDN customers

root net rootnet08 at gmail.com
Mon Jun 9 16:04:48 EDT 2008


Jay,

You are correct the ISDN PTP loop is confusing. I am talking a dedicated
ISDN line that dials only one other ISDN line on the ISP side to make up a
PTP loop if you will.  Hopefully that clears.  Unlimited ISDN BRI service is
what we will order for the customer cheaper and safer.  After contacting the
LEC, they do not offer IDSL so handing off to our ATM is out of the
question.  Thank you for your help!
-rootnet08
On Mon, Jun 9, 2008 at 2:37 PM, Jay Hennigan <jay at west.net> wrote:

>  root net wrote:
>
>> Hello,
>>
>> I am not sure if this question has been asked before if so I apologize.  I
>> was wanting some advice on aggregation.  I have some customers that want
>> broadband but can not receive in this even T-1 or ISDN is an option.  Of
>> course a T-1 is too expensive for the home user and the only option for us
>> to provide the bandwidth to the customer is via an ISDN PTP loop.  There
>> are
>> maybe 10 to 15 wireless is not an option to to inform them about this to
>> no
>> avail.  How can we bring in the PTP ISDN lines on one circuit on our side,
>> T-1 possibly?
>>
>
> "ISDN PTP loop" is somewhat confusing.  ISDN is normally a switched service
> (and beware of per-minute charges, just like POTS).
>
> There is IDSL which is a form of DSL which uses 2B1Q encoding to deliver a
> 192 kbits/s symmetrical digital pipe.  The advantage of this over
> traditional DSL is that ISDN BRI-type repeaters can be used to extend the
> loop length.
>
> I'm not certain how several of these loops would be aggregated directly  on
> Cisco gear or if it is even possible.  Typically a central-office-located
> DSLAM would have an IDSL line card to terminate the loops and hand off to
> you as a PVC on an ATM aggregate circuit.
>
> --
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
> Impulse Internet Service  -  http://www.impulse.net/
> Your local telephone and internet company - 805 884-6323 - WB6RDV
>


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