Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!execu!sequoia!texbell!vector!telecom-gateway From: max@bnr-rsc.uucp (Max Feil) Newsgroups: comp.dcom.telecom Subject: Overseas Modem Transfer Request Message-ID: Date: 26 Oct 89 23:12:07 GMT Sender: news@vector.Dallas.TX.US Organization: Bell-Northern Research, Ottawa, Canada Lines: 39 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 475, message 2 of 8 I would like to find the best way of transmitting fairly large amounts of data from overseas. I need to transfer a minimum of 4-5 megs daily of heavily compressed binary data via modem on public overseas dialup lines. The system is basically meant to replace standard fax transmissions with a more cost-effective system that will use a PC for image scanning and data compression at one end and a similar PC for uncompression/printout at the other. I would appreciate any and all help in finding a suitable modem or transfer mechanism for this task. The connection will be from Toronto Canada to Hong Kong in order to take advantage of discounted Canadian toll charges. (Hong Kong to North America and U.S. to Hong Kong seems to be more expensive). From Toronto the information will pass into the continental U.S. To be feasible, I need a data rate of at least 9600 bps with full error detection/correction via a protocol such as MNP. I have heard of >30Kbps rates with such modems, but is this only for local lines? How does the potentially reduced bandwith & increased noise/dropouts of overseas connections affect the maximum data rate I can achieve? I have heard that some high speed modems degrade excessively in noisy conditions. I need the fastest rate possible. Daily transfer will be at least 4-5 megabytes, with 2 or 3 connections made per day. What are my options for modems I can connect to a PC? I am currently getting 30% compression on my scanned text/drawings using Pkarc compression software (widely used on bbs's). I have heard of other schemes that can be used to highly compress image data, but I need to know what's commercially available. I have investigated the use of public packet networks, but the connect and per kilopacket charges are much to high. I am very interested in any help somebody from the telecommunications/modem/ibm pc world can give me. Thanks in advance. Max Feil max@bnr-rsc.UUCP or utgpu!bnr-vpa!bnr-rsc!max Bell-Northern Research (613) 763-3093 P.O Box 3511 Station C, Ottawa, Ontario, Canada K1Y 4H7.