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Thread ID: 23762	2002-08-25 02:36:00	USR Modem problem	peejay (1396)	Press F1

Post ID	Timestamp	Content	User
73653	2002-08-25 02:36:00	I have an early USR Sportster 56 k modem that gets confused between the American busy signal and our normal signal consequently it rings twice then hangs up reporting a busy line. There is a command to add to the mdem int string to stop this happening, can anybody tell me what it is? Thanks, Pat	peejay (1396)
73654	2002-08-25 02:55:00	Just a wild stab, you could try either ATB0, or ATB1, to switch the answer sequence between either ITU-T or US answer sequence. Was there not a manual with the modem giving the command summary, and the S register settings?	Terry Porritt (14)
73655	2002-08-25 04:03:00	Hi Terry, yep have all the commands but I cant see anything that will cause the modem to ignore a busy signal which is what I need. Will try your suggestion of ATB0 though.	peejay (1396)
73656	2002-08-25 04:30:00	Nope, that didnt work. I seem to recall it was a S register setting but I cant find it anywhere. Any other suggestions?	peejay (1396)
73657	2002-08-25 04:42:00	Try atx1 There are 22,000 hits for modem ignore busy on Google....one of them is bound to be right.	godfather (25)
73658	2002-08-25 05:14:00	Ok, to change an S register setting, the command is ATSr=n, where r is the register and n is a decimal value. A problem is that I think the S register settings can be different for different model modems even of the same make. Looking in an old internal ISA 56k sportster manual (but includes external modems as well), suggests that changing S27 changes the modulation for different types of call, overseas and domestic (ie Canada and US), etc. Here are the different values listed to enable and or disable different modes. But again this is a bit of a wild guess. n=0=default, then 1, 2, 4, 8, 16, 32, 64, 128. Cheers	Terry Porritt (14)
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