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- Newsgroups: comp.dcom.modems
- Path: in2.uu.net!world!geh
- From: geh@world.std.com (Greg E Hersh)
- Subject: Re: USR Connection Speeds
- Message-ID: <Dnwvz1.Av7@world.std.com>
- Organization: The World Public Access UNIX, Brookline, MA
- X-Newsreader: TIN [version 1.2 PL2]
- References: <4hkqui$gm7@news-e2a.gnn.com>
- Date: Thu, 7 Mar 1996 19:11:25 GMT
-
- PTH (PTHarn@gnn.com) wrote:
- : I have been trying to connect to AOL at higher than28.8 using compression but
- : always connect at 28.8. The AOL tech says that USR modems always report DCE
- : speeds so you don't see the higher throughput speeds. Does anyone know if
- : this is true and if so is there a way of telling what my throughput speeds
- : are? Thanks
-
- Regarding the throughput. These are the results I got by connecting PC runing
- Windows 3.1, Procomm for Windows, serial port speed is set to 115K,
- 16C550 UART chip, COM1 buffer is set for 16K. Another end has Xylogics
- Annex 2000 terminal server, serial port speed is set to 115K. Both sites
- use USR and connect at 28.8K. Annex 2000 in turn is connected to Ethernet
- with UNIX Sun/OS machine. A protocol being used for a file transfer is
- Zmodem on both PS/PROCOMM and UNIX. Transfer is from UNIX to PC.
-
- 1. Heavily compressed file (using UNIX gzip utility) - about 3200 bytes/sec.
- 2. Non-compressed binary image (like UNIX kernel) - between 5 and 6 KB/sec.
- 3. Non-compressed ASCII file (like a postscript file) - between 8 and 9 KB/sec.
-
-
- - Greg -
-