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 <[email protected]> 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:[email protected]<jabber%[email protected]> > +972-50-7952406 mailto:[email protected] > http://www.xorcom.com iax:[email protected]/tzafrir > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
-- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
