Date: Sat, 22 Jan 2000 20:50:23 -0600 From: "Steve Morrow" <morrows@dmtconsulting.com> To: <dayton@overx.com>, "Majid Almassari" <majid@ibroadcast.net> Cc: <freebsd-questions@FreeBSD.ORG> Subject: RE: Making a 56K Modem Pool Message-ID: <NDBBIFELELJNDBMMKKHHAEFKCHAA.morrows@dmtconsulting.com> In-Reply-To: <86d7qtiknk.fsf@polo.overx.com>
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Two 56k modems connected together will not connect higher than 33.6. All 56k modems are "one way" they only achieve those speeds downstream, not up. In order to communicate at those speeds you would need to use a different technology. Steve morrows@dmtconsulting.com -----Original Message----- From: owner-freebsd-questions@FreeBSD.ORG [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Soren Dayton Sent: Saturday, January 22, 2000 8:31 PM To: Majid Almassari Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Making a 56K Modem Pool "Majid Almassari" <majid@ibroadcast.net> writes: > Soren Dayton <dayton@overx.com> wrote in message > news:86u2k5io06.fsf@polo.overx.com... > > > Does someone know what's going on here (or know of a pointer to that > > kind of information)? I just don't understand what the issues are, > > and I'm going to need to understand these to buy new modems, phone > > lines, etc. > > Unfortunately there is nothing that you can do about it except calling the > phone company and complain about noise so they can dispatch a technician to > check the wiring in your location at least. Remote testing based on Signal > to Noise ratios are not that accurate anyway. There might be wiring problems > in your location that a phone tech can determine (like a cross-over > wiring-Phone guys know this better that I do?). If everything is OK then you > are basically limited and need to switch to a different Technology such as > ISDN, XDSL, Cable,...etc. Hmm. Either I don't understand your answer, or I asked the question badly. The setup is two analog modems talking to each other. Both can separately achieve ~51k connections on their respective phone lines to various 56k services (such as USR's 56k test line and various Chicago ISPs). However when connecting to each other, they always get 33k. One explanation is that one is configured to max out at 33k in one direction. The USR/3com guy said, basically, that this is true. BUT also that there are funny protocol issues that require that one of the modems be in a "server mode" and speak a "server protocol". And that these kinds of devices only come in ISDN flavors (thus requiring digital lines, etc) So my question: is this true? What's the story? What are references that I can look at? Does this disagree with what you are saying? Does it agree? Did I state the question clearly enough? THANKS, Soren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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