Path: utzoo!utgpu!watserv1!watmath!att!att!emory!wuarchive!sdd.hp.com!ucsd!ucbvax!VMS.HUJI.AC.IL!marx
From: marx@VMS.HUJI.AC.IL (Michael M. Marx)
Newsgroups: comp.dcom.modems
Subject: Re: Passive modem?
Keywords: Modems Passive
Message-ID: <493@shum.huji.ac.il>
Date: 17 Nov 90 22:15:36 GMT
References: <457@shum.huji.ac.il> <1335@bilver.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: marx@vms.huji.ac.il
Organization: The Hebrew University of Jerusalem, Jerusalem, Israel
Lines: 33

In article <1335@bilver.UUCP>, bill@bilver.UUCP (Bill Vermillion) writes...
>In article <457@shum.huji.ac.il> marx@vms.huji.ac.il writes:
>>Is there a company that manufactures PASSIVE modem?
>>When I say Passive modem I mean a modem that does not broadcast at all, only
>>receive, this is useful for a third party to listen to the other two parties
>>without making things messy.
>>to make a long story short.
>>A and B are speaking, C wants to hear, but C can't do that with a normal modem
>>since a normal modem will respond to received broadcast. I want C only to list
en.
>
>C can't do that with a normal modem, if you mean the old style modem that
>had no "smarts" as all.
>
>If you have a "hayes" command set compatible modem set register C to 0 to
>turn off the transmitter, then set S10 to 255 to ignore carrier status and
>stay on line all the time, then a D or an A depending on which side of the
>line you wish to monitor.   You need to monitor the side doing the echoing
>so you can see what it sent, and what the other side transmitted.


Still, Something is missing, you need some string in order to disable
to handshaking "desire" of this modem, naturally, the modem wants to
coordinate with the other modems, and this desire must be opressed somehow...


-Michael

+------------------------------------------------------------------------------+
 Michael M. Marx                  marx@vms.huji.ac.il / marx@hujivms.bitnet
 The HUJI, Jerusalem.             "Your mission, should you decide to accept
 Israel                            it will be..." - Mission: Impossible
+------------------------------------------------------------------------------+