448 lines
13 KiB
Plaintext
448 lines
13 KiB
Plaintext
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Z y X E L
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Frequently Asked
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Questions List
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Last Modified: March 21st, 1993
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Archived at: ftp.cs.psu.edu in /pub/fenner/ZyXEL
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Please mail any additions to: mckeeveb@sfu.ca
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*------------------------------------------------------------------------------*
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ZyXEL Tech support BBS/voice numbers:
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ZyXEL, Taiwan
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BBS: 886-35-787045
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Voice: 886-35-783942
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FAX: 886-35-782439
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TCL Technology, Hong Kong
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BBS: (852) 574-6040
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Voice: (852) 891-3281
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FAX: (852) 891-6335
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ZyXEL, USA (formerly 0/1 Networking)
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BBS: (714) 693-0762
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Voice: (714) 693-0808
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or: (800) 255-4101 (Works in Canada)
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FAX: (714) 693-8811
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OCOMP Optimizing COMPuters, Canada
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Voice: (416) 534-1508
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E-Mail: gvb@telly.on.ca
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*------------------------------------------------------------------------------*
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Mail servers known to carry ZyXEL info:
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questor.org
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send mail to 'mail-server@questor.org'
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with a body of 'HELP' to get instructions
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*------------------------------------------------------------------------------*
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Known mailing lists dealing with ZyXEL modems:
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zyxel-programmers@sfu.ca
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Please send all subscription/cancellation requests to
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owner-zyxel-programmers@sfu.ca
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*------------------------------------------------------------------------------*
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Latest official ROM release(s):
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6.00 available only for 1-Mbit EPROMs
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5.05m available for 1-Mbit and 512-Kbit EPROMs
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(really old non-plus models)
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Beta ROMs have been known to ship in modems supplied by ZyXEL USA,
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so you may have a newer version than those listed here.
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*------------------------------------------------------------------------------*
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Where to get EPROMs to update modem ROMs:
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Almost any major electronics supplier should be able to
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get the needed parts. You'll also need access to an (E)PROM burner
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capable of burning 1-Mbit PROMs. Shop around for your EPROMs, as
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prices can vary drastically.
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EPROMs can also be purchased pre-programmed direct from ZyXEL
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and from the Questor Project (see company directory at the end)
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NOTE: Radio Sharck doesn't count as a major electronics dealer.
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Part number to get: 27C010 1-Mbit EPROM
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27C512 512-Kbit EPROM (really old non-plus's)
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120ns or faster ROMs are recommended for non-plus model modems.
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100ns or faster ROMs are recommended for plus model modems.
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150ns ROMs have been known to work, but are definitely not advised.
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Note for the inexperienced:
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Using faster ROMs will not make your modem go faster.
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The speeds recommended are those found to provide good
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reliability and operation and getting faster ones will
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not provide any further speed enhancement.
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Note for the lazy:
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I have just purchased a large quantity of 27C010's and
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would be willing to sell some at a reasonable price (plus
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shipping) for those who don't want to shop around. E-mail
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me for details (mckeeveb@sfu.ca)
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(I'd even be willing to have them burned for a few bucks more)
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*------------------------------------------------------------------------------*
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Modifications for EPG optionfor S/S+ models:
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This modification enables the 3 pins next to the power connector for
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the connection of an oscilliscope to view an eye pattern for line diagnostics.
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Note: these 2 chips are CMOS devices and are static sensitive. Use
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suitable caution.
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chip Number Part Number Manufacturer Description
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---------------------------------------------------------------------
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U11 AD7528JN (Analog Devices) 8-bit buffered DAC
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U12 TL072CP Texas Instruments 2 x FET op-amp
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*------------------------------------------------------------------------------*
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Changing Country Codes:
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These steps allow you to change the the line interface to match those
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used/required for operation in various countries.
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Type:
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ats38=2
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at#g123 where 123 is the country code desired.
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at&w to save these settings
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Probably best to power-cycle the modem at this point
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at#h to get current country code (North America = 255)
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*------------------------------------------------------------------------------*
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Known country codes:
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Austria: 233
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Japan: 234
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North America: 255
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If you know of any other country codes, please mail them to me
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(mckeeveb@sfu.ca) for inclusion in a future version of this FAQ.
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*------------------------------------------------------------------------------*
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ZyXEL power supply:
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ZyXEL uses a transformer that puts out 20VAC, 900mA with a center tap
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The transformer should ideally have output between 50 Hz and 60 Hz.
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+-----+
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AC --> | o o | <-- AC
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\ o /
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---
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^
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+-- Center tap
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*------------------------------------------------------------------------------*
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Making Caller ID (CID/CND) Work right:
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Way back in September, ZyXEL released a note (now disappeared off my drives)
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which described the use of the S45 and S46 registers to set timing.
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They (wrongly) assumed that the ringing on the GTD-5 exchanges was exactly
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1.75s, following by 50ms silence, then data; for DMS-100 as a 2s - 3.5s ring
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interval, followed by 500ms of silence.
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The CallerID length depends on the amount of data the exchange transmits
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as its message.
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***********************-----++++++++++++++++++
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^ ^ ^
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Ring Silence CallerID Data
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I quote from their message:
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<< It is difficult for the modem to receive CallerID signals for both exchanges
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without configurable parameters. Two new parameters are implemented for this
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purpose, S45 and S46. They are called "guard time" and "silence interval",
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respectively.
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The silence interval is the consecutive silence that the modem should detect
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after ring on before CallerID signal to be processed. Distinctive ringing may
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be combined with CallerID, and therefore a guard time is needed for the modem
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to inhibit the silence detection.
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Registers S45 and S46 are in units of 20ms. Default setttings should be in
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the range of S45=100, S46=28 for DMS-100 (Bell, Northern), and possibly
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S45=87 and S46=3 for GTD-5 switches. >>
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The place this argument falls down, is on the GTD-5 switch, where they
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use "flash ringing". Flash ringing starts at any point in the ring cycle,
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which means you can get anywhere from 0.1s up to 2.0s of ringing current
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before the 50ms silent period followed by data from the central office switch.
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In any event, you now have the parameters for the critical registers
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for CallerID, for whatever good it may do you.
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*------------------------------------------------------------------------------*
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FTP servers known to Carry ZyXEL info:
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ftp.csie.nctu.edu.tw mirror of ZyXEL (Taiwan) BBS
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cca.camb.com Mirror of ftp.csie.nctu.edu.tw
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grind.isca.uiowa.edu Look in /info/ZyXEL
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iacrs1.unibe.ch Look in /pub/ZyXEL
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another mirror of ZyXEL, Taiwan
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faramir.informatik.uni-oldenburg.de Look in /pub/amiga/incoming/zyxel
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pretty much a mirror of ROM images, etc.
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abdallah.cd.chalmers.se Same info as above sites, with more
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files from ZyXEL, USA BBS
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ftp.luth.se ROM images, files, info, etc.
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Look in /pub/misc/zyxel
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dsrbg2.informatik.tu-muenchen.de Look in /physik/ZyXEL
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Contents similar to above site.
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ftp.cs.psu.edu Look in /pub/fenner/ZyXEL
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Owner says: odd tibits, etc. Usually
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no ROM images.
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rusmv1.rus.uni-stuttgart.de Look in /pub/soft/pc/comm/zyxel
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sgi.com Look in /sgi/modems
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Contains file called: fix-zyxel
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(mirrored on wuarchive.wustl.edu)
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Replacement files for /usr/lib/uucp
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and /etc (gettydefs) to use ZyXELs
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Look in /sgi/fax
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Contains FlexFAX software (V 2.0b22)
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shape.mps.ohio-state.edu Look in pub/netfax-zyxel
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Contains netfax patches for ZyXELs
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129.26.9.88 (name unknown) Look in /usr/pub/zyxel
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Contains beta version of PD voicemail
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program for PC
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quepasa.cs.tu-berlin.de Look in /pub/atari/modem
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File called: zyxelinf.lzh
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Host sun.rz.tu-clausthal.de Look in /pub/atari/telecomm
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File called: zyxelinf.lzh
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**********************
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MAC FILES...
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FILE: ara-zyxel-u1496e.hqx
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biom3.univ-lyon1.fr (134.214.100.42)
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Location: /pub/mac/comm
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akiu.gw.tohoku.ac.jp (130.34.8.9)
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Location: /pub/mac/comm/CTB
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uhunix2.uhcc.hawaii.edu (128.171.44.7)
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Location: /mirrors/info-mac/comm
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wuarchive.wustl.edu (128.252.135.4)
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Location: /mirrors2/info-mac/comm
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utsun.s.u-tokyo.ac.jp (133.11.11.11)
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Location: /ftpsync/info-mac/comm
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sumex-aim.stanford.edu (36.44.0.6)
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Location: /Volume1/info-mac/comm
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sics.se (192.16.123.90)
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Location: /pub/info-mac/comm
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pinus.slu.se (130.238.98.11)
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Location: /pub/mac/comm
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sally.informatik.rwth-aachen.de (137.226.112.172)
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Location: /pub/rz.archiv/simtel/info-mac/comm
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swdsrv.edvz.univie.ac.at (131.130.1.4)
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Location: /mac/info-mac/comm
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ftp.uu.net (137.39.1.9)
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Location: /systems/mac/info-mac/comm
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lth.se (130.235.20.3)
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Location: /pub/mac/info-mac/comm
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metten.fenk.wau.nl (137.224.129.4)
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Location: /info-mac/comm
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nic.switch.ch (130.59.1.40)
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Location: /mirror/info-mac/comm
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**********************
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FILE: zyxel.sit.hqx
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wuarchive.wustl.edu (128.252.135.4)
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Location: /mirrors3/archive.umich.edu/mac/util/comm/ara
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garbo.uwasa.fi (128.214.87.1)
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Location: /mirror/umich.macarchive/util/comm/ara
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**********************
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FILE: ara-zyxel-u1496.hqx
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akiu.gw.tohoku.ac.jp (130.34.8.9)
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Location: /pub/mac/comm/CTB
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uhunix2.uhcc.hawaii.edu (128.171.44.7)
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Location: /mirrors/info-mac/comm
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wuarchive.wustl.edu (128.252.135.4)
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Location: /mirrors2/info-mac/comm
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sumex-aim.stanford.edu (36.44.0.6)
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Location: /Volume1/info-mac/comm
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*********************
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MISC. MACINTOSH FILES...
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wuarchive.wustl.edu (128.252.135.4)
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Location: /mirrors3/archive.umich.edu/mac/util/comm/ara
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FILE: zyxelu1496.sit.hqx
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pollux.lu.se (130.235.132.89)
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Location: /pub/mac/comm
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FILE: ara-zyxel-u1496.cpt.hqx
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garbo.uwasa.fi (128.214.87.1)
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Location: /mirror/umich.macarchive/util/comm
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FILE: comm/arazyxel.sit.hqx
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*------------------------------------------------------------------------------*
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Mailorder Firms that carrying ZyXEL equipment:
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Black & White Software (802) 496-5113
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Contact: Craig Goss
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Boston Computer (617) 551-0166
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Contact: Sheri Hamel
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CTS (615) 966-3667
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Eagle Computing (302) 657-9303
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Contact: Chris Pyrros, pyrros@cis.udel.edu
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Golden Everstar (714) 594-4168
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GPSoftware, Australia 61-7-366-1402 (FAX and voice)
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Contact: Greg Perry, gregp@gpsoft.adsp.sub.org
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Information Technology Services, RPI
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(518) 271-2473
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Contact: Daniel Ling
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Kandy Shack (800) 638-1170
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(714) 636-2667 (BBS - 10 lines)
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Contact: Mike Bernstein
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Micro Logic Limited, New Zeland
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64-9-309-3135
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64-9-309-3195 (FAX)
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Contact: Barney Campbell
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MLM Computers and Consulting
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(607) 256-2933
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Contact: Mark Margolis
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OCOMP Optimizing Computers
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(416) 534-1508
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Contact: George Vande Bunte, gvb@telly.on.ca
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SI Services (215) 675-7507
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Contact: Joshua Alder
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Sondos Communications (800) 955-5000
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(800) 365-4223
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Contact: Steve
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(Note: formerly known as Alpine Communications)
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Sparco Computers (601) 323-5360
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(601) 324-6433 (FAX)
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Contact: Mubashir Cheema, mac1@ra.msstate.edu
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Sparco will sell these modems in quantity
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The Questor Project (604) 682-6659
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(604) 682-6160 (FAX)
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(604) 681-0670 (BBS)
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Contact: Steve Pershing, sp@questor.org
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Questor will sell these modems in quantity
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ZyXEL USA (800) 255-4101
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(714) 693-0808
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Contact: Sales Dept.
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And, Barton F. Bruce (Barton.Bruce@camb.com) will sell them in quantity.
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*------------------------------------------------------------------------------*
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Patching GNU's NetFax to work with ZyXELs:
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Receiving:
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Receiving works flawlessly, PROVIDED that you convince Netfax to send
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0x12 instead of 0x11 to the Zyxel when starting to receive a new page.
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Apparently the standard changed this over two years ago, and most other
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modems still also accept 0x11 as a compatibility kludge.
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Sending:
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The key to sending multiple pages is to throw out AT+FDT=a,b,c,d and
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replace it with AT+FDT, and to set the desired parameters in a
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AT+FDCC=a,b,c,d,e,f,g,h message sent when starting up.
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A pre-made set of patches is available from ftp.cs.psu.edu:/pub/fenner/ZyXEL
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as a file called netfax.patches
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*------------------------------------------------------------------------------*
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Information on ZyXEL's CELP compression mode for voice:
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CELP compression is currently available only on plus model modems.
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Unfortunately, ZyXEl has not published any information regarding the manual
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decodeing/encoding using this method.
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Some related material is available from the following sources:
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TITLE="Coded-Excited Linear Prediction (CELP): High-Quality Speech
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at Very Low Bit Rates"
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AUTHOR="M. R. Schroeder and B. S. Atal"
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BOOKTITLE="Proc. IEEE Int'l Conf. on Acoust., Speech and Signal Processing"
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YEAR="1985"
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PAGES="937-940"
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MONTH="April"
|
||
|
|
||
|
*------------------------------------------------------------------------------*
|
||
|
$
|