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From: linc@tongue1.berkeley.edu (Linc Madison)
Newsgroups: comp.dcom.telecom
Subject: Re: USA to UK Telco Link
Message-ID: <16170@accuvax.nwu.edu>
Date: 17 Jan 91 11:40:59 GMT
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X-Telecom-Digest: Volume 11, Issue 47, Message 2 of 12


Seems to me the easiest method to assure compatibility is to get an
inexpensive 2400-bps modem.  My Supra Modem 2400 (available mail order
for about $120) can also accept commands in the "AT" format to use the
European standards for lower baud rates.

 From the reference card,

ATB (or ATB0) selects CCITT V.22bis mode at 1200 baud
ATB1          selects Bell 212A mode at 1200 baud

That means that you may not even need to change modems!  Try just
changing your dialing string from ATDT011... to ATBDT011....

Just for completeness,
AT&P (or AT&P0) selects US/Canada "make/break" ratio for pulse
AT&P1           selects UK/etc. "make/break" ratio

Be sure to reinitialize any settings you change on your international
calls when you make a domestic call, of course!


Linc Madison  =  linc@tongue1.berkeley.edu

Disclaimer: I have no connection to Supra, except being a VERY happy
customer.  These commands are presented as part of the "standard" AT
command set, but are not guaranteed to work on other "AT" modems.