asterisk users - Jul 2010 - p2p or p2mp for BRI

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?

Thanks and regards.

- Woody
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Hello,

2010/7/1 pranav jawale <pranavshriram at gmail.com>
> 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

what do you mean, here ?
your telco is billing differently depending signalling type ?


> 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?
>
To me, you can choose whatever your want, but it's for research purpose you
can also connect replace telco connectivity with something you simulate with
your own hardware.


>
> Thanks and regards.
>
> - Woody
>
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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
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir