[c-nsp] Aggregation for multiple ISDN customers

[Justin Shore]

One other option you might consider is LRE with some Hatteras gear. 
This is something that we're looking into right now.  But, if a T1 was 
too expensive, I imagine the underlying infrastructure costs needed to 
support this one customer would probably not be viable either.

Justin


root net wrote:
> 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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