SL>PM>         A "leased-line" in this case is in theory a pair of wires
SL>PM>         "leased" from the phone company between two sites.  There
SL>PM>         is no dialing or dial tone, and it is very similar to
SL>PM>         just  connecting a very long cable between two buildings.
SL>  Then no dial up is possible anywhere else than the two buildings?
        In this case, yes.  However, some (most modern) true Lease Line
        modems support unit ID, so you can connect between any two of 
        several units connected on the same line.
SL>  And how the modems can ring each other? 
        They don't RING in any case.  They basically poll looking
        for each other when the DTR line is raised (following the
        example in the V34LL.TXT file) or when the commands are
        issued from software.
-Patrick Moore
 Sysop of Supra BBS 
CMPQwk1.42 331ūStart init. strings with AT&Fn for solid configurations
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