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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!ucbvax!questor.UUCP!sp
- From: sp@questor.UUCP
- Newsgroups: sci.electronics
- Subject: Modem_w/FAX_CallerID_LCD_Display_up_to_16800cps
- Message-ID: <gate.7y8ioB1w165w@questor.wimsey.bc.ca>
- Date: 26 Jul 92 21:31:29 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Lines: 88
-
- I have in front of me, a ZyXEL U-1496S modem. This is the sort of
- state-of-the-art-modem I would have had my group design were I still
- working in modem research at Gandalf Data.
-
- It has a 2 line by 20 character LCD display, menu-tree programming from
- the screen via 4 pushbuttons, and implements a whole bunch of CCITT
- protocols up to 14,400 v.32bis/v.42.bis, and v.17 FAX. Needless to say,
- it does both sync and async, and even has modes for use with cellular
- and satellite.
-
- (Presently, the operation modes are: v.33; v.32bis; v.32; v.29;
- v.27ter; v.22bis; v.22; BELL 212A; G3 FAX according to T30, v.17, v.29
- and v.27ter; and most variants.)
-
- What does the display do besides allow you to program all the registers?
- Well, you can not only see the incoming connect speed, but also things
- like:
- - Signal-to-noise ratio
- - Received Carrier Power Level
- - Phase Jitter (p-p degrees with .1 deg resolution)
- - Frequency offset between TX and RX freqs (in .1 Hz res)
- - Round-trip echo delay in (1/2400 sec)
-
- ...and a whole lot more.
-
- After your communication session has finished, you can even call up (by
- an AT-command) a "Link Status Report" which will give you:
-
- - Chars sent; Chars rcvd; Octets sent; Octets Rcvd
- - Blocks sent; Blocks rcvd; Blocks re-sent;
- - Max Outstanding; Max Block Size;
- - Retrain requests; Retrains granted; Link duration;
- - T401 timeouts; T402 Timeouts; FCS Errors;
- - Round-trip delay; Xmtr under-run; Rcvr Over-run
- - Reason for disconnect.
-
- With the latest ROM revisions, it handles Caller ID, 4 different ringing
- codes, and the maximum speed is 16,800 baud. (They are working, I
- believe on 19,200 baud.)
-
- Finally, for the technically minded, it can even be supplied with X- and
- Y-axis outputs for a scope, so that you can see "eye" or "constellation"
- diagrams.
-
- There are three telephone receptacles for telco line connexions: One
- for a local phone; one for 2/4-wire leased-line, and one for 2-wire
- dial-up line. (The dial-up line even supports telco 1A-key system A-
- leads for lamp status control.)
-
- Lots of features have been left out of this little blurb to try to keep
- it as short as I can.
-
- Upgrades? Well, they are via a couple of 27C010-15 (1Mb) ROMs, and the
- binaries are usually posted on their BBS, or available via FTP or mail-
- server from various sources (including here). So, if you have access to
- a ROM-burner, you can do the upgrades yourself.
-
- Just had to let you know about this great little modem, in case you
- hadn't already heard.
-
- Anyhow, having said all of that, you can get most info (including TIFF-
- image files at 300dpi) from my mail-server. To save space, the files
- have been compressed with ZOO, which is available for most O/S from DOS
- to UNIX. (ZOO version 2.10 for DOS and for UNIX is available via mail-
- server request from this site.)
-
- To get started with the mail-server, send e-mail to:
-
- mail-server@questor.wimsey.bc.ca
-
- and in the body of the text, enter the following at the left margin,
- with nothing else in the body:
-
- HELP
- INFO
- INFO INDEX
- INFO FILINDX
-
- Warm regards to all.
-
- --
- Steve Pershing, System Administrator, The QUESTOR Project
- Offering FREE access to Sci, Med, & AIDS news, and more. [also UUCP]
- on a ZyXEL-1496S v.42bis, v.32bis, v.33, up to 16,800bps.
- .-------------------------------------------------------------------.
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