textfiles/internet/FAQ/zyxel.faq

448 lines
13 KiB
Plaintext
Raw Permalink Normal View History

2021-04-15 11:31:59 -07:00
Z y X E L
Frequently Asked
Questions List
Last Modified: March 21st, 1993
Archived at: ftp.cs.psu.edu in /pub/fenner/ZyXEL
Please mail any additions to: mckeeveb@sfu.ca
*------------------------------------------------------------------------------*
ZyXEL Tech support BBS/voice numbers:
ZyXEL, Taiwan
BBS: 886-35-787045
Voice: 886-35-783942
FAX: 886-35-782439
TCL Technology, Hong Kong
BBS: (852) 574-6040
Voice: (852) 891-3281
FAX: (852) 891-6335
ZyXEL, USA (formerly 0/1 Networking)
BBS: (714) 693-0762
Voice: (714) 693-0808
or: (800) 255-4101 (Works in Canada)
FAX: (714) 693-8811
OCOMP Optimizing COMPuters, Canada
Voice: (416) 534-1508
E-Mail: gvb@telly.on.ca
*------------------------------------------------------------------------------*
Mail servers known to carry ZyXEL info:
questor.org
send mail to 'mail-server@questor.org'
with a body of 'HELP' to get instructions
*------------------------------------------------------------------------------*
Known mailing lists dealing with ZyXEL modems:
zyxel-programmers@sfu.ca
Please send all subscription/cancellation requests to
owner-zyxel-programmers@sfu.ca
*------------------------------------------------------------------------------*
Latest official ROM release(s):
6.00 available only for 1-Mbit EPROMs
5.05m available for 1-Mbit and 512-Kbit EPROMs
(really old non-plus models)
Beta ROMs have been known to ship in modems supplied by ZyXEL USA,
so you may have a newer version than those listed here.
*------------------------------------------------------------------------------*
Where to get EPROMs to update modem ROMs:
Almost any major electronics supplier should be able to
get the needed parts. You'll also need access to an (E)PROM burner
capable of burning 1-Mbit PROMs. Shop around for your EPROMs, as
prices can vary drastically.
EPROMs can also be purchased pre-programmed direct from ZyXEL
and from the Questor Project (see company directory at the end)
NOTE: Radio Sharck doesn't count as a major electronics dealer.
Part number to get: 27C010 1-Mbit EPROM
27C512 512-Kbit EPROM (really old non-plus's)
120ns or faster ROMs are recommended for non-plus model modems.
100ns or faster ROMs are recommended for plus model modems.
150ns ROMs have been known to work, but are definitely not advised.
Note for the inexperienced:
Using faster ROMs will not make your modem go faster.
The speeds recommended are those found to provide good
reliability and operation and getting faster ones will
not provide any further speed enhancement.
Note for the lazy:
I have just purchased a large quantity of 27C010's and
would be willing to sell some at a reasonable price (plus
shipping) for those who don't want to shop around. E-mail
me for details (mckeeveb@sfu.ca)
(I'd even be willing to have them burned for a few bucks more)
*------------------------------------------------------------------------------*
Modifications for EPG optionfor S/S+ models:
This modification enables the 3 pins next to the power connector for
the connection of an oscilliscope to view an eye pattern for line diagnostics.
Note: these 2 chips are CMOS devices and are static sensitive. Use
suitable caution.
chip Number Part Number Manufacturer Description
---------------------------------------------------------------------
U11 AD7528JN (Analog Devices) 8-bit buffered DAC
U12 TL072CP Texas Instruments 2 x FET op-amp
*------------------------------------------------------------------------------*
Changing Country Codes:
These steps allow you to change the the line interface to match those
used/required for operation in various countries.
Type:
ats38=2
at#g123 where 123 is the country code desired.
at&w to save these settings
Probably best to power-cycle the modem at this point
at#h to get current country code (North America = 255)
*------------------------------------------------------------------------------*
Known country codes:
Austria: 233
Japan: 234
North America: 255
If you know of any other country codes, please mail them to me
(mckeeveb@sfu.ca) for inclusion in a future version of this FAQ.
*------------------------------------------------------------------------------*
ZyXEL power supply:
ZyXEL uses a transformer that puts out 20VAC, 900mA with a center tap
The transformer should ideally have output between 50 Hz and 60 Hz.
+-----+
AC --> | o o | <-- AC
\ o /
---
^
+-- Center tap
*------------------------------------------------------------------------------*
Making Caller ID (CID/CND) Work right:
Way back in September, ZyXEL released a note (now disappeared off my drives)
which described the use of the S45 and S46 registers to set timing.
They (wrongly) assumed that the ringing on the GTD-5 exchanges was exactly
1.75s, following by 50ms silence, then data; for DMS-100 as a 2s - 3.5s ring
interval, followed by 500ms of silence.
The CallerID length depends on the amount of data the exchange transmits
as its message.
***********************-----++++++++++++++++++
^ ^ ^
| | |
Ring Silence CallerID Data
I quote from their message:
<< It is difficult for the modem to receive CallerID signals for both exchanges
without configurable parameters. Two new parameters are implemented for this
purpose, S45 and S46. They are called "guard time" and "silence interval",
respectively.
The silence interval is the consecutive silence that the modem should detect
after ring on before CallerID signal to be processed. Distinctive ringing may
be combined with CallerID, and therefore a guard time is needed for the modem
to inhibit the silence detection.
Registers S45 and S46 are in units of 20ms. Default setttings should be in
the range of S45=100, S46=28 for DMS-100 (Bell, Northern), and possibly
S45=87 and S46=3 for GTD-5 switches. >>
The place this argument falls down, is on the GTD-5 switch, where they
use "flash ringing". Flash ringing starts at any point in the ring cycle,
which means you can get anywhere from 0.1s up to 2.0s of ringing current
before the 50ms silent period followed by data from the central office switch.
In any event, you now have the parameters for the critical registers
for CallerID, for whatever good it may do you.
*------------------------------------------------------------------------------*
FTP servers known to Carry ZyXEL info:
ftp.csie.nctu.edu.tw mirror of ZyXEL (Taiwan) BBS
cca.camb.com Mirror of ftp.csie.nctu.edu.tw
grind.isca.uiowa.edu Look in /info/ZyXEL
iacrs1.unibe.ch Look in /pub/ZyXEL
another mirror of ZyXEL, Taiwan
faramir.informatik.uni-oldenburg.de Look in /pub/amiga/incoming/zyxel
pretty much a mirror of ROM images, etc.
abdallah.cd.chalmers.se Same info as above sites, with more
files from ZyXEL, USA BBS
ftp.luth.se ROM images, files, info, etc.
Look in /pub/misc/zyxel
dsrbg2.informatik.tu-muenchen.de Look in /physik/ZyXEL
Contents similar to above site.
ftp.cs.psu.edu Look in /pub/fenner/ZyXEL
Owner says: odd tibits, etc. Usually
no ROM images.
rusmv1.rus.uni-stuttgart.de Look in /pub/soft/pc/comm/zyxel
sgi.com Look in /sgi/modems
Contains file called: fix-zyxel
(mirrored on wuarchive.wustl.edu)
Replacement files for /usr/lib/uucp
and /etc (gettydefs) to use ZyXELs
Look in /sgi/fax
Contains FlexFAX software (V 2.0b22)
shape.mps.ohio-state.edu Look in pub/netfax-zyxel
Contains netfax patches for ZyXELs
129.26.9.88 (name unknown) Look in /usr/pub/zyxel
Contains beta version of PD voicemail
program for PC
quepasa.cs.tu-berlin.de Look in /pub/atari/modem
File called: zyxelinf.lzh
Host sun.rz.tu-clausthal.de Look in /pub/atari/telecomm
File called: zyxelinf.lzh
**********************
MAC FILES...
FILE: ara-zyxel-u1496e.hqx
biom3.univ-lyon1.fr (134.214.100.42)
Location: /pub/mac/comm
akiu.gw.tohoku.ac.jp (130.34.8.9)
Location: /pub/mac/comm/CTB
uhunix2.uhcc.hawaii.edu (128.171.44.7)
Location: /mirrors/info-mac/comm
wuarchive.wustl.edu (128.252.135.4)
Location: /mirrors2/info-mac/comm
utsun.s.u-tokyo.ac.jp (133.11.11.11)
Location: /ftpsync/info-mac/comm
sumex-aim.stanford.edu (36.44.0.6)
Location: /Volume1/info-mac/comm
sics.se (192.16.123.90)
Location: /pub/info-mac/comm
pinus.slu.se (130.238.98.11)
Location: /pub/mac/comm
sally.informatik.rwth-aachen.de (137.226.112.172)
Location: /pub/rz.archiv/simtel/info-mac/comm
swdsrv.edvz.univie.ac.at (131.130.1.4)
Location: /mac/info-mac/comm
ftp.uu.net (137.39.1.9)
Location: /systems/mac/info-mac/comm
lth.se (130.235.20.3)
Location: /pub/mac/info-mac/comm
metten.fenk.wau.nl (137.224.129.4)
Location: /info-mac/comm
nic.switch.ch (130.59.1.40)
Location: /mirror/info-mac/comm
**********************
FILE: zyxel.sit.hqx
wuarchive.wustl.edu (128.252.135.4)
Location: /mirrors3/archive.umich.edu/mac/util/comm/ara
garbo.uwasa.fi (128.214.87.1)
Location: /mirror/umich.macarchive/util/comm/ara
**********************
FILE: ara-zyxel-u1496.hqx
akiu.gw.tohoku.ac.jp (130.34.8.9)
Location: /pub/mac/comm/CTB
uhunix2.uhcc.hawaii.edu (128.171.44.7)
Location: /mirrors/info-mac/comm
wuarchive.wustl.edu (128.252.135.4)
Location: /mirrors2/info-mac/comm
sumex-aim.stanford.edu (36.44.0.6)
Location: /Volume1/info-mac/comm
*********************
MISC. MACINTOSH FILES...
wuarchive.wustl.edu (128.252.135.4)
Location: /mirrors3/archive.umich.edu/mac/util/comm/ara
FILE: zyxelu1496.sit.hqx
pollux.lu.se (130.235.132.89)
Location: /pub/mac/comm
FILE: ara-zyxel-u1496.cpt.hqx
garbo.uwasa.fi (128.214.87.1)
Location: /mirror/umich.macarchive/util/comm
FILE: comm/arazyxel.sit.hqx
*------------------------------------------------------------------------------*
Mailorder Firms that carrying ZyXEL equipment:
Black & White Software (802) 496-5113
Contact: Craig Goss
Boston Computer (617) 551-0166
Contact: Sheri Hamel
CTS (615) 966-3667
Eagle Computing (302) 657-9303
Contact: Chris Pyrros, pyrros@cis.udel.edu
Golden Everstar (714) 594-4168
GPSoftware, Australia 61-7-366-1402 (FAX and voice)
Contact: Greg Perry, gregp@gpsoft.adsp.sub.org
Information Technology Services, RPI
(518) 271-2473
Contact: Daniel Ling
Kandy Shack (800) 638-1170
(714) 636-2667 (BBS - 10 lines)
Contact: Mike Bernstein
Micro Logic Limited, New Zeland
64-9-309-3135
64-9-309-3195 (FAX)
Contact: Barney Campbell
MLM Computers and Consulting
(607) 256-2933
Contact: Mark Margolis
OCOMP Optimizing Computers
(416) 534-1508
Contact: George Vande Bunte, gvb@telly.on.ca
SI Services (215) 675-7507
Contact: Joshua Alder
Sondos Communications (800) 955-5000
(800) 365-4223
Contact: Steve
(Note: formerly known as Alpine Communications)
Sparco Computers (601) 323-5360
(601) 324-6433 (FAX)
Contact: Mubashir Cheema, mac1@ra.msstate.edu
Sparco will sell these modems in quantity
The Questor Project (604) 682-6659
(604) 682-6160 (FAX)
(604) 681-0670 (BBS)
Contact: Steve Pershing, sp@questor.org
Questor will sell these modems in quantity
ZyXEL USA (800) 255-4101
(714) 693-0808
Contact: Sales Dept.
And, Barton F. Bruce (Barton.Bruce@camb.com) will sell them in quantity.
*------------------------------------------------------------------------------*
Patching GNU's NetFax to work with ZyXELs:
Receiving:
Receiving works flawlessly, PROVIDED that you convince Netfax to send
0x12 instead of 0x11 to the Zyxel when starting to receive a new page.
Apparently the standard changed this over two years ago, and most other
modems still also accept 0x11 as a compatibility kludge.
Sending:
The key to sending multiple pages is to throw out AT+FDT=a,b,c,d and
replace it with AT+FDT, and to set the desired parameters in a
AT+FDCC=a,b,c,d,e,f,g,h message sent when starting up.
A pre-made set of patches is available from ftp.cs.psu.edu:/pub/fenner/ZyXEL
as a file called netfax.patches
*------------------------------------------------------------------------------*
Information on ZyXEL's CELP compression mode for voice:
CELP compression is currently available only on plus model modems.
Unfortunately, ZyXEl has not published any information regarding the manual
decodeing/encoding using this method.
Some related material is available from the following sources:
TITLE="Coded-Excited Linear Prediction (CELP): High-Quality Speech
at Very Low Bit Rates"
AUTHOR="M. R. Schroeder and B. S. Atal"
BOOKTITLE="Proc. IEEE Int'l Conf. on Acoust., Speech and Signal Processing"
YEAR="1985"
PAGES="937-940"
MONTH="April"
*------------------------------------------------------------------------------*
$