[asterisk-users] p2p or p2mp for BRI

[pranav jawale]

Thank you for your replies.

@Olivier

Yes. The telco here (in Mumbai, India) charges more for p2p. See their
tariff http://mtnlmumbai.in/telecomservices/isdntariff.html#bratariff
It is mentioned in "Charges for point to point connectivity : ISDN BRA
Lines" that extra charges would be applied for p2p. They have not mentioned
any charges for p2mp so I'm assuming this is what I will be getting p2mp by
default.

We plan to do speech recognition of the collected data, therefore would not
prefer data passed over simulated channel.

@Tzafrir
Yes p2mp might complicate the thing. It seems I have to explicitly ask them
for P2P while applying. I mean that if I do not explicitly ask them for p2p,
will
my card work (for whichever default connection they provide for ISDN
handset) ?

On Thu, Jul 1, 2010 at 3:23 PM, Tzafrir Cohen <tzafrir.cohen at xorcom.com>
wrote:
>
> On Thu, Jul 01, 2010 at 01:21:23PM +0530, pranav jawale wrote:
> > Hello,
> >
> > I'm a graduate student. We are setting up an IVR system for research
purpose
> > on a BRI channel. (We can't afford PRI line as its cost is about 10x of
the
> > BRI). The line will be connected to the CTI card. Using asterisk server
we
> > will be recording the calls.
> >
> > I'm confused about whether we should apply for point-to-point
connectivity
> > or point-to-multipoint. P2P costs more than P2MP and
> > we do not intend to invest money if not needed. I would like to ask your
> > advice on whether for our purpose we need p2p or would p2mp suffice?
>
> The 'M' in PtMP stands for 'Multi'. Basically PTP is the standard ISDN
> protocol, and PtMP is an extension of its logic to make ISDN (BRI)
> phones behave somewhat like analog phones: allow you to connect several
> of them on the same line.
>
> I suspect that this is really the last thing you need. It makes things
> more complicated and less determenistic. However I suspect that if you
> ask the phone company for a PTP connection, they'll assume you are a
> "business customer" (connecting his own PBX, rather than multiple
> phones). If you can get PTP without paying extra - use it.
>
> --
>               Tzafrir Cohen
> icq#16849755              jabber:tzafrir.cohen at xorcom.com<jabber%3Atzafrir.cohen at xorcom.com>
> +972-50-7952406           mailto:tzafrir.cohen at xorcom.com
> http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir
>
> --
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