Mark, at 10:55 on Nov 24 1996, you wrote to Bill Grimsley...

BG> I have tested the US/Canada Courier's distinctive ring 
BG> discrimination, and it  appears to function extremely well, 
BG> even here in Oz.  Of course, there's no guarantee that 
BG> Telstra will use any of the domestic Courier's preprogrammed 
BG> ring patterns, but if not, I'd expect the 061 SDL to be 
BG> recoded accordingly.

MG> You have tested it and found that it works, but you aren't 
MG> sure if it will? Isn't that a bit of a contradiction, or have 
MG> you only tested it with the normal ring, or do you mean that 
MG> RING A may not correspond with the right first number?  If 
MG> its the later case, I don't really care, as long as it gives 
MG> a different indication for each ring type...

One of the US/Canada SDL's ring patterns (RING B from memory) corresponds
precisely with our normal ring, and if the Courier is set to ignore this
pattern, the modem won't pick up the line at all, which indicates that as
long as Telstra use DR patterns similar to those already coded into the
Courier's ROM, it SHOULD discriminate as advertised.  As it stands now,
when set to answer RING B only, it picks up the line instantly, and reports
RING B as its result string.  Ergo, the PRESUMPTION is that it works,
although as I don't have Distinctive Ring, I'm unable to prove this
definitively.

Regards, Bill

--- MsgedSQ/2 3.50