[c-nsp] Aggregation for multiple ISDN customers

[Brandon Price]

Cant you just buy an ISDN PRI circuit? That should allow 23 inbound BRI
calls?

Brandon 

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of root net
> Sent: Monday, June 09, 2008 1:05 PM
> To: Jay Hennigan
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Aggregation for multiple ISDN customers
> 
> 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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