Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!cornell!biar!alchemy!shark From: shark@alchemy.ithaca.ny.us (Kris Stark) Newsgroups: comp.dcom.modems Subject: Re: High speed error correcting modems Message-ID: Date: 2 Sep 90 19:38:17 GMT References: <420B054E165F804D79@grove.iup.edu> Organization: Alchemy International, Ithaca, N.Y. Lines: 36 JUTBAAA@IUP.BITNET (Abhik Biswas) writes: > Date sent: 28-AUG-1990 13:46:19 > > I am trying to find the best cost effective option for high speed > modems (at least 9.6k) for use in India where the telephone line quality > is poor. If anyone has any experience in working in a similar situation pleas > advice. > Hmmm.... Leaves me to wonder, are you thinking of using the modem between cities, or only in one of the larger metros? Having lived in India for 8 years, and dealt with the phone system, I could almost say that you could almost totally forget all modem transmissions unless you are calling within a MNTL (Mahanagar Telephone Nigam Limited) network. Most other lines are so bad that the best option might just be a packet modem with a radio :-) The other problem you would face there is that the modem probably would not be able to recognize the weird signal tones that the phone network there uses, and you would definately have to add a spike and surge suppressor on the phone line. Apart from that, I would say that a trellis modem would be a necessity, not only because of the echo that the modems cause at the high speeds, but also because of the echo inherent in the phones out there... Simply said, I would think that to get any modem to work there would be a major miracle! I think we should make the country the official test site of all modems.... :-) Good luck if you do get anything to work... BTW there is an internet node in India, they might be able to help you out a little more. Unfortunately I cannot remember the name, but if you send me mail to STARK@ITHACA.BITNET I can dig out the name of the system and get more info that way... Kris