11-5-93
                          Using Distinctive Ring

   When you receive a call the telephone will ring in patterns (like an old
party  line)  which the modem will recognise.  While you can have up  to  4
different rings, commonly you have two, maybe three. They are RING A, B, C,
and D, RING C is uncommon.
     On a Zoom Faxmodem that supports Distinctive Ring (Ringmate), you  can
use  AT '$$' commands to tell the modem how to react to each ring. You  can
tell the modem to ignore RING A, let the software handle RING B, and answer
RING D as data, for example.

If the software does not recognise A or B after RING, the maximum number of
Ringmate numbers is two. You set AT$$R1 which tells the modem to  recognise
the  rings, but not to print the A B etc. You can set the modem  to  ignore
RING  A, and then specify what it will do for RING B (or RING D). This  may
be  telling  the modem to let the software handle the call, or  to  take  a
certain action.
     For  example:
  AT$$R1$$A1$$B0  (don't print A-B, Ignore RING A, software answer RING B)
  AT$$R1$$A7$$B1  (don't print A-B, Ignore RING B, A answer as Class-2 fax)

     If  at least one software you are using will recognise the  additional
paramter  of A B etc after the RING (RING A  RING B) then you may use  more
than two ringmate numbers. You use $$R2 to print RING A or RING B etc.
     Suppose uou want A: for your voice. B: voice/fax software C:BBS
     The Voice/fax software will recognise RING B. BBS software will not.
     Set your BBS software to answer on 3 or 4 rings (to let other software
     do it's thing first if it's not RING D).
  AT$$R2$$A1$$B0$$D4  (print A-B-D, Ignore A, Software takes B, D answers
                       as Data w/full negotiation)
or another setup:
  AT$$R2$$A1$$B3$$D6   (print  A-B-D), ignore A, Answer B  2400 negotiate,
                        Answer D class-1 Fax)

     Depending on your needs and software, you'll have to try combos of the
commands to what works for you.
                                   Don Hinds - Zoom Tech

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