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Article #1787033600 modem will never connect beyond 24000
From: Daniel Wilson
Date: Sun, 02 Feb 1997 00:00
Date: Sun, 02 Feb 1997 00:00
90 lines
2836 bytes
2836 bytes
Details of my setup are - = Rockwell (non RPI) = one of the chips has - = RCV288DPi R6682-24 ROCKWELL 95 9619 B10435-7 written on it. It is supposedly capable of 33.6kb/s however I can only ever connect at = no more than 24kb/s (thats if I'm lucky, usually its around 21.6 or 19.2, = it does go down to 14.4 or 7.2 some times) I've digested manuals, AT command books trying to put together a good = init string but no matter what I do, no AT command can make it go faster. = I bought the modem from Solwise modems in Hull (www.demon.co.uk/solwise) When I FORCE a 33.6 connect it completly spams out on me, my dialler = (trumpet winsock v.3) screen fills up with garbage in no time at all. I = try to force a 28.8 connect but it still connects at 24kb/s. I'm at my wits end, other than taking the damned thing back I've no other = ideas. = Other things I've tried are - = getting BT to test the line (tested ok). I did tell them it was a modem = connection (they are not required to give line quality that will support = anything above 2.4kb/s) but they said it should connect at 33.6 no probs. it didnt work. I got BT to keep the auto gain control on the line static (which should = avoid conflicts with the modem's own gain control). That didnt work. I've messed around with the house wiring, and taken the computer to the = master socket downstairs. Still connects at 24kb/s. = I've messed around with serial ports and IRQ's in my machine. didnt work. I have a 16550 uart but as its an internal modem it shoudl matter = anyway. I'm thinking the on-modem serial port might be a 8450 uart and therefore = reduce computer-modem throughput, but surely that shouldnt affect the = connect speed. And what manufacturer would use a slow uart on a fast = modem ? Please help ! I've forked out a good =A3100 for this modem and I'm feeling = I should have gone for a 28.8 for all the good its done me. rockwell RPI modems have no error correction on the modem itself but I'm = assured this one is NonRPI and *does* have error correction on board. if there is anyone who can help, I'd be very grateful for any you could = give me ! many thanks in advance, -- = *************** Daniel Wilson daniel@dwilson.demon.co.uk
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 102a94,fcb7d9e122c2f33b,start X-Google-Attributes: gid102a94,public From: Daniel Wilson <daniel@dwilson.demon.co.uk> Subject: 33600 modem will never connect beyond 24000 Date: 1997/02/02 Message-ID: <32F4CC84.607F@dwilson.demon.co.uk> X-Deja-AN: 213948986 x-nntp-posting-host: dwilson.demon.co.uk content-type: text/plain; charset=iso-8859-1 mime-version: 1.0 newsgroups: demon.tech.modems x-mailer: Mozilla 2.02 (Win16; I)