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- Path: FreeNet.Carleton.CA!an171
- From: an171@FreeNet.Carleton.CA (Anthony Hill)
- Newsgroups: comp.dcom.modems
- Subject: Re: Why 33600?
- Date: 15 Apr 1996 02:27:51 GMT
- Organization: The National Capital FreeNet
- Sender: an171@freenet5.carleton.ca (Anthony Hill)
- Message-ID: <4ksc77$8qo@freenet-news.carleton.ca>
- References: <4kn9v9$n6e@solaris.cc.vt.edu>
- Reply-To: an171@FreeNet.Carleton.CA (Anthony Hill)
- NNTP-Posting-Host: freenet5.carleton.ca
-
-
- Pak-Meng Cham (polpchm@vt.edu) writes:
- > I usually get my 28.8k v3.4 modem connect at 26400bps. Over the year, it
- > might connect at 28.8 kps for 3 or 4 times. Many say that 28.8k is already
- > pushing the limit of the phone line and most of the time it just won't go to
- > 28.8kps. As the latest model (one by USR) push the limit even higher, I
- > wonder if it make any practical sense.
-
-
- For some people it does, for others it does not. The idea of v.34
- is really to make the most out of the any availible phone line that you
- connect the modem to. This is actually quite different from all previous
- protocols from the ITU-T, which were designed with the lowest common
- denominator idea. Some phone lines WILL support 33.6 quite easily. Many
- others will support 31.2. Other phone lines will be limited to less.
- Also, 33.6 includes some other enhancements. It adds completely seamless
- rate renegotiated, and adds the possibility of connecting at one 2400bps
- step higher even if you're connections are not at 28.8 but are limited due
- to lack of usable bandwidth (ie if you can only connect at 26.4 with a
- 28.8 modem, a 33.6 modem MAY allow you to connect at 28.8 regularly if
- your phone connection has limited bandwidth but a good signal to noise
- ratio).
-
- Anthony
-
- --
- Anthony Hill | an171@FreeNet.Carleton.CA
-