(PM) Can't limit USR modem

Craig Baird (bairdc@xpressweb.com)
Thu, 25 Feb 1999 13:11:45 -0700

Some of you may remember a few weeks back, I had a USR V.90 modem that
wouldn't take the &Nn init string to limit it's connect speed. Well
I've got another one now. This one's an external USR 56k voice faxmodem
pro (the one that's USB capable, although I'm just using it with the
standard RS-232 port). It's model # 00560500. It has the same
problem! I can put &Nn in Extra Settings to my heart's content, and it
never affects anything. I've been trying &N28, which should limit it to
42666, but it keeps connecting at either 49,333 or 45,333 with
mega-retrains/renegs/disconnects. I also tried connecting with
Hyperterminal. I did a:

AT&F1&N28
ATDT<phone number>

with the same result--connect at 49,333. I can lock it at V.34, but I'd
rather lock it to a higher rate if possible.

Since this modem had 5.98 firmware, I thought that this might be the
problem, so I found an 11/98 firmware update (ver. 4.9.2, I think), and
flashed the modem. Same problem, though. It just seems to ignore the
&N28. The only solution I've found is to lock it to V.34. Heck, I've
even tried the "+MS=..." inits a la Rockwell (of course, they didn't
work). Does anyone know what the deal is here? Did USR just leave out
the speed limiting features on certain firmware revs, or is there
another string besides &Nn that will accomplish this?

Thanks

Craig
-
To unsubscribe, email 'majordomo@livingston.com' with
'unsubscribe portmaster-users' in the body of the message.
Searchable list archive: <URL:http://www.livingston.com/Tech/archive/>