US-Sportster Upgrade FAQ. CHasto zadavaemye voprosy
Document revision 1.15.
Robert Agababyan (robert@agababyan.com)
>> Mozhno skachat' s nashej BBS - 283-4180, 0:00-8:00.
Itak, sushchestvuet 2 osnovnye modeli high-speed Sportster-ov:
1.Sportster 14,400/PC with v.32bis
2.Sportster 28,800/PC with v.34 and v.FC
|to vnutrennie, sootvetstvuyushchie vneshnie ne imeyut
oboznacheniya /PC. Modeli s faksom imeyut dobavku Fax. Modemy s
golosom imeyut dobavku Vi. Na osnove Sportster 14400 takzhe
delayut Sportster 9600 putem zapreshcheniya 14400 v konfiguracii.
Takzhe nedavno vypushcheny usechennye varianty Sportster Si (RPI-
based modem s WinRPI) i Sportster'95 (odnoprocessornyj
variant). Takzhe sushchestvuet neskol'ko bolee staryh ili
malorasprostranennyh modelej na 2400 i 9600.
Inicializiruyutsya Sportster-y strokoj
AT&F&A3&B1&H1&R2&S1X4. No firma USR takzhe rekomenduet dobavit'
&K3 - zapretit' MNP5 kompressiyu. Poslednie modeli imeyut
dopolnitel'no komandy AT&F1 (Hardware flow control template) i
AT&F2 (Software flow control template) i inicializirovat' ih
nado strokoj AT&F1, nu i mozhno dobavit' &K3. Naschet parochki
S9/S10 - Misha Serov rekomenduet postavit' 22/55. YA zhe
rekomenduyu ostavit' default-ovye 6/7 - s etimi znacheniyami moj
Sportster eshche ni razu sam ne kinul trubku vo vremya konnekta i
derzhitsya za liniyu do poslednego, a s 22/55 on pochemu-to voobshche
ne zhelaet brosat' trubku i krome togo inogda brosaet ee s kodom
"Loss carrier".
Nedokumentirovannye komandy
U Sportster-a est' takzhe neskol'ko nedokumentirovannyh
komand, menyayushchihsya ot versii k versii. Vot oni:
ATY4 - Line status progress (debug mode, for some models'94 -
ATY24)
ATY5 - Part of the selftest (diodes)
ATY6 - Statistic same as ATI6
ATY7 - Analog stats (only during connection)
ATY9 - 255 unknown numbers (only during connection)
ATY14 - Configuration
ATY15 - Current DipSwitch settings
ATGx[A[,B]] - Set of I/O commands (A - address, B - byte)
= - memory dump (bytes)
B - I/O ports dump
I - in byte from port
O - out byte to port
R - memory dump (words)
U - ???
W - write byte to memory
BOOT5 - reset modem firmware
? - some more secret commands :)
ATUSR - Credits
ATRS99? - USR Copyright message (part of ATUSR)
AT!E (0,1) - Turn on/off calling tone
ATI92 - Credits
ATI99 - The production date of the ROM
AT&Jn - n=[0,1] Jack type? (only for DSP version < 10)
ATZn - n=[0..5] software reset
ATNn - Call DSP procedure number n
ATNL - Move 10K to port [00C0] (DMA ?)
ATNX - Boot start
Teper' naschet upgrade-ov. Firma USR oficial'no ob®yavila,
chto liniya Sportster upgrade-it'sya ne budet, i lish' pokupaya
doroguyu seriyu Courier, vy poluchaete pravo na apgrejdy, tak kak
vkladyvaete svoi den'gi v razvitie tehnologii firmy USR. Liniya
Sportster zadumyvalas' kak deshevyj i nadezhnyj potrebitel'skij
modem. I eto podtverzhdaetsya tem, chto dlya modeli Sportster v.34
na rynke sejchas net ser'eznyh konkurentov.
Vot otlichiya linii Courier ot linii Sportster:
1. Adaptive Speed Leveling (ASL)
2. V32-terbo (21.6k, 19.2k, 16.8k bps)
3. Voice/Data switch with programmable functions (external models)
4. V.25bis synchronous mode
5. Call duration reporting (Clock operations)
6. Automated redialing (the ">" command)
7. Remote configurability
8. Dialback security, including Autopass
9. Five additional front panel lamps (external models)
10. MI/MIC operations (required in some commercial applications)
11. HST mode (Dual standard models)
12. HST Cellular mode (Dual standard models)
13. Class 2.0 fax
14. Leased line operations
15. Call selection (auto switch between fax & data mode)
16. Three additional levels of call progress reporting (X5, X6, X7)
17. Stored command execution (AT&ZC)
18. Selectively enable/disable transmitter for receive-only (monitor) mode
19. Touchtone recognition (%T)
20. More dialed number memory locations
21. Three additional dipswitches
22. Compatabile with USR's Total Control Management system
23. Several more "AT" commands and "S" registers to tinker with
24. Several more command/connect responses
25. A much more handsome case (external models)
26. A much better quality of speaker audio
27. Upgradeable to V.34 (V.fast) (and beyond??)
28. Satisfaction in knowing that you own the best modem money can buy.
(Pod Courier-om imelsya vvidu rodnoj vneshnij Courier V32T HST DS with ASL).
V modeli Sportster 28800 poyavilis' punkty 5, 13, 15, 17, 20, 27.
Osnovnye preimushchestva modeli Courier pered Sportster
eto nalichie dopolnitel'nyh protokolov ASL i HST.
ASL (Adaptive Speed Leveling) - eto sobiratel'noe ponyatie,
vklyuchayushchee v sebya vozmozhnost' podnyatiya skorosti (fall-forward)
pri uluchshenii kachestva linii;
vozmozhnost' nesimmetrichnogo soedineniya na v.32(bis,Terbo)
protokolah - t.e. pri etom priemnik i peredatchik analiziruyutsya
otdel'no i na kazhdom kanale vystavlyaetsya optimal'naya skorost',
chto ochen' polezno i daet bol'shoj vyigrysh na anizotropnyh
liniyah;
nalichie Quick Retrain - pri etom retrejny mogut prohodit' za
ochen' nebol'shoe vremya - do 5 sekund, protiv 20-25 y obychnyh
modemov.
HST (High Speed Technology) - eto sverhnadezhnyj protokol,
razrabotannyj firmoj USR special'no dlya raboty na plohih linyah.
Ego otlichitel'noj osobennost'yu yavlyaetsya fantasticheskaya
ustojchivost' (mozhno podnyat' trubku na parallel'nom telefone,
krichat' v liniyu, vesti parallel'nyj razgovor po telefonu - HST
ponizhaet skorost' do 4800, no ne padaet i prodolzhaet rabotat')
i ochen' bystryj handshake, prakticheski neotlichimyj ot 2400
handshake. |ti osobennosti sozdayut osobuyu privlekatel'nost'
protokolu HST dlya raboty na rossijskih linyah, slavyashchihsya svoim
"kachestvom". Mnogie pol'zovateli modemov, vynuzhdennye iz-za
plohoj linii rabotat' na 2400 po prichine togo, chto na
skorostnyh protokolah modemy prosto ne vyazalis' libo postoyanno
obryvali svyaz', byli prosto porazheny kogda obnaruzhili, chto HST
uspeshno rabotaet na etoj linii, bez problem davaya cps bol'she
1000. Imenno po etoj prichine vo vsem mire takoj vysokij interes
k protokolu HST - v nem ochen' udachno sochetayutsya skorost' i
nadezhnost'. No oficial'no protokolom HST obladaet tol'ko ochen'
dorogaya seriya Courier, a v deshevoj modeli Sportster etogo
protokola net.
Rassmotrim, kak zhe obstoit situaciya na samom dele.
Pervye vysokoskorostnye modeli Courier HST DS byli
trehplatochnye i podderzhivali v.32bis ot firmy Rockwell,
ustanovlennyj na otdel'noj dochke, i HST 14400. Zatem kogda
firma USR vypustila svoj v.32bis i HST 16800, poyavilas' novaya
model' v kotoroj vsya intellektual'naya chast' byla vynesena na
odnu dochku i nikakim Rockwell'om tam ne pahlo. Na dochke (s
dvustoronnim montazhem) stoyal N80188, 2 TMS 32025, kucha melochi
(bez zakaznyh kristallov) i 2 PZU - supervizor i kod dlya TMS.
|ta model' vypuskalas' kak v dvuplatochnom variante (analogovaya
chast' na mame), tak i v trehplatochnom (analogovaya chast' - na
otdel'noj dochke).
Sushchestvoval variant etogo modema HST only, na kotorom byl
tol'ko odin TMS. Na osnove tekushchej modeli Courier byl vypushchen
Sportster. V konce 1992 - nachale 1993 USR peredelala modem -
ustanovila 80C188, 1 TMS 320C50 i svalila vsyu meloch' v zakaznoj
kristal. |to pozvolilo vypustit' malen'kij Sportster.
V 1991-om godu 4 kanadskih hakera zadumalis': a pochemu
eto Sportster tak pohozh na staryj Courier? Pokovyryavshis', oni
nashli chto Sportster i Courier otlichayutsya tol'ko proshivkoj,
kotoraya avtodetektiruet tip modema po hitrym peremychkam i NVRAM
i dlya Sportster-a prosto otklyuchaet HST i prochie prelesti Couri
er-a. V teh Sportster-ah eshche ne byla otklyuchena komanda ATGW i
rebyatki nedolgo dumaya prosto haknuli pamyat' s dampom
konfiguracii i stali naslazhdat'sya HST 16800. :) Vot eta
strochka:
AT GW3C6,22 GW5CD,2F
Zatem ATGW v Sportster-ah zapretili. No hakerov eto ne
smutilo. Oni uzhe ponyali, chto Sportster ot Courier otlichaetsya
tol'ko proshivkoj. V Rossii samym pervym upgrade-ami stal
zanimat'sya Misha Serov (2:5030/106.10) iz Pitera. Sejchas etim
takzhe zanimayutsya Anatoly Skoblov (2:5030/78) vmeste s Mikle
Likhachev (2:5030/131) v Pitere i ya, Robert Agababyan
(2:5020/234) vmeste s Grisha Rusanov (2:5020/69.15) v Moskve.
Takzhe nedavno v Moskve apgrejdami stali zanimat'sya Dimka Kozlov
(2:5020/246) i Dennis Kornyukhin (2:5020/150).
Rassmotrim tehnologiyu upgrade-a.
Dlya prevrashcheniya Sportster-a v Courier HST DS neobhodimo
sdelat' dva shaga: 1) prevratit' Sportster v Courier; 2)
vklyuchit' HST i ASL (esli net, to i Fax). Vot podrobnaya
tehnologiya upgrade-a:
1. Prevrashchenie Sportster-a v Courier (hotya kak-to raz radi prikola my
sdelali
Sportster s HST. :) |to mozhno sdelat' tremya putyami:
a) Zamknut' peremychku na plate, kotoruyu proveryaet firmware dlya togo, chtoby
opredelit', chto eto za modem (sposob imeet nedostatok - prihoditsya
payat' platu i krome togo ona est' ne na vseh modemah);
b) Haknut' proverku etoj peremychki v firmware (luchshij sposob);
v) Vklyuchit' komandu ATGW i v init-stroke propisat' s pomoshch'yu ATGW bajt
v pamyati, otvechayushchij za opredelenie Sportster/Courier (sposob imeet
nedostatok - on rabotaet tol'ko do pervogo Power On/Off).
2. Vklyuchenie HST, ASL i FAX. Nalichie etih 3-h protokolov ustanavlivaetsya v
NVRAM i proveryaetsya firmware. Vklyuchit' ih mozhno tremya sposobami:
a) Vklyuchit' komandu ATGW i ispravit' bajtiki v RAM, gde hranitsya kopiya
NVRAM, posle chego skazat' AT&W (luchshij sposob);
b) Haknut' firmware v tom meste, gde proveryaetsya nalichie etih
protokolov (normal'nyj sposob, no pervyj korrektnee);
v) Vklyuchit' komandu ATGW i v init-stroke propisat' s pomoshch'yu ATGW bajty
v pamyati, otvechayushchie za opredelenie HST, ASL i FAX (sposob imeet
nedostatok - on rabotaet tol'ko do pervogo Power On/Off, Drop DTR,
ATZ etc.).
3. Ispravit' oshibku v firmware, iz-za kotoroj voznikayut problemy s
vhodyashchimi zvonkami. Po vpolne ponyatnoj prichine HST ne testirovalsya na etom
firmware. |to aktual'no tol'ko dlya modelej oseni 93-go. Dlya modelej 94-go goda
neobhodimo ispravit' glyuki s signalom sostoyaniya iz DSP na protokolah
HST i Terbo (v tekushchem variante pri prieme dannyh eti protokoly ne mogut
opredelit' trebuemuyu skorost' peredachi).
Kak vidite, tehnologiya dostatochno ponyatna. No ne vse
Sporster-y upgrade-yatsya odinakovo. Vot spisok vozmozhnyh up
grade-ov v zavisimosti ot kontrol'noj summy, vydavaemoj po
ATI1:
a) Upgrade v Courier v.32bis 14400 HST DS 16800 with ASL:
4887
2501
CA53
3398
3C60
54B8
A81C
...
t.e. vse modeli, vypushchennye letom 93-go i ran'she.
b) Upgrade v Courier v.32bis 14400 OutHST DS 16800 with ASL and RA libo
v Courier Terbo 21600 HST DS 16800 libo
v Russian Courier:
A283
E210
D40D
3069
...
t.e. vse osennie modeli 93-go goda.
c) Upgrade v Courier Terbo 21600/14400 HST DS 16800/9600 Cellular Fax 2.0
libo
v Russian Courier:
292A
EB7B
E661
793A
1D52
1D51
1960
...
t.e. vse modeli 94-go goda.
d) Upgrade v Courier v.32bis 14400 OutHST DS 16800 with ASL and Voice:
A5EF
...
t.e. vse modeli Sportster 14400 Vi.
e) Ne poddayutsya apgrejdu modeli 95-go goda vypuska v svyazi s krajne
uproshchennoj
apparaturoj. |ti modeli krajne _ne_rekomenduyutsya_ k pokupke:
142C
C0F9
5352
...
t.e. vse modeli 95-go goda.
f) USR takzhe vypustila 2 modeli 94-go goda s komandoj ATGW. Kontrol'nye
summy etih modelej 1D51(internal) i 1D52(external). K sozhaleniyu, v etih
proshivkah ot HST pochti nichego ne ostalos' i hotya ih mozhno prevratit' v Courier
HST DS, real'no pochti nichego iz poyavivshihsya vozmozhnostej rabotat' ne budet. Dlya
prevrashcheniya etih modelej v Courier HST DS nado vvesti sleduyushchuyu strochku:
dlya vnutrennih modemov (1D51): AT GW562,28 S34=0 GW778,2F
dlya vneshnih modemov (1D52): AT GW562,22 S34=0 GW778,2F
Krajne ne rekomenduetsya pytat'sya propisyvat' dlya etih modelej raznye
chisla v pamyati komandoj ATGW. Vy nichego ne dob'etes', no mozhete pozhech' svoj
modem. T.k. HST v etoj modeli vse ravno ne rabotaet, to vklyuchat' ego ne imeet
smysla i poetomu rekomenduemaya stroka inicializacii dlya etih modelej:
1D51: AT &F1 &K3 GW562,28 S34=0
1D52: AT &F1 &K3 GW562,22 S34=0
Esli stoit problema s UTR, to mozhno dobavit' AT S10=255 S19=1.
Ponyatie OutHST dlya osennih modelej oznachaet, chto posle upgrade
protokol HST budet rabotat' tol'ko na vyhodnyh zvonkah, a na
vhodnyh ostanetsya tol'ko v.32bis. Svyazano eto s oshibkoj v
firmware. Dimka Kozlov ispravil etu oshibku, no nikomu pro eto
ne rasskazyvaet i apgrejdov takih ne delaet. :)
Na osnove osennih modelej 93-go goda Misha Serov delaet
apparatnyj upgrade v Couier Terbo 21600 HST DS 16800 Fax Class
2.0 pri etom polnost'yu apparatno povtoryaetsya sootvestvuyushchij
rodnoj kur'er.
Dlya modemov s bol'shim dinamikom (osen''93 - lyuboj'94) Misha
Lihachev i Tolya Skoblov razrabotali apgrejd v Russian Courier.
|to Courier v.32bis 14400 HST DS 16800 s AONom, Golosom i
nekotorymi dopolnitel'nymi vozmozhnostyami. Sejchas oni takzhe
dobavili k RC 21600/V32T i 21600/RHST.
g) Takzhe dlya lyubyh modelej Sportster 28800 delaetsya upgrade v Courier
v.Everything HST DS. |to modeli:
32B8
05B1
FE63
461E
1554
8D35
3D21
h) Ne poddayutsya apgrejdu modeli Sportster 33600 na TMS:
3C77
07CA
6954
C85C
5529
i) Sportster Vi 28800 i 33600 na Intel podlezhat peredelke, a na TMS - net.
Vo vseh variantah Sportster peredelyvaetsya v polnyj analog
Courier v.Everything. A takzhe mnogo uluchshenij, takih kak:
ispravlenie UTR (bag polnost'yu ischezaet), ispravlenie HST
(chtoby ne padal i normal'no retrejnilsya), pochti 100% busy.
Podderzhivaemye protokoly: v.32bis, v.32Terbo(21600), v.FC,
v.34, HST(16800), HST Cellular(16800). T.e. poluchaetsya polnyj
analog Courier v.Everything, tol'ko namnogo luchshe nego, t.k.
budet bol'she vozmozhnostej i budut ispravleny vse oshibki.
Otnositel'no cen na upgrade:
Dlya 14400 cena kolebletsya ot $5 do $100 v zavisimosti ot tipa apgrejda.
Dlya 28800 cena kolebletsya ot $40 do $100.
Modeli Sportster na TMS apgrejdu ne podlezhat. |to 14400 95-go
goda i Sportster 33600.
Modeli Sportster V.34 (V.34+) Vi apgrejdyatsya v Courier V.Ev
erything HST DS Vi za isklyucheniem modelej na TMS. Otlichit' ih
mozhno po cvetu korobki - apgrejdyashchiesya serogo cveta, togda kak
neapgrejdyashchiesya golubogo.
Vyvod: na segodnyashnij den' Sportster yavlyaetsya nesomnenno
luchshim iz deshevyh i nadezhnyh v.32bis ili v.34 modemov.
Vozmozhnost' nedorogogo upgrade-a do Courier HST DS pridaet emu
osobuyu prelest'. T.o. Sportster - ideal'nyj modem dlya domashnej
stancii. I praktika podtverzhdaet eto - v odnoj tol'ko Moskve
okolo poloviny habov i bolee 40% vladel'cev 28800 rabotayut na
modeli Enhanced Courier v.Everything, a obshchee kolichestvo
zaapgrejdivshihsya prevyshaet 1000 chelovek.
* Courier HST DS (HST Dual Standard) - modem, podderzhivayushchij kak
standartnye protokoly (ITU-T v.xx) tak i protokol HST.
* Fax (Facsimile) - metod peredachi risunka ili otpechatannogo dokumenta po
telefonnoj linii.
* HST (High Speed Technology) - novyj pomehoustojchivyj protokol,
razrabotannyj firmoj USR i primenyaemyj v modelyah Courier. Podderzhivaet
skorosti 4800, 7200, 9600, 12000, 14400 i 16800 bps (sudya po
dopolnitel'nym strochkam konnekta v
poslednih proshivkah USR planiruet skoro sdelat' HST 19200 i 21600).
* HST Cellular - protokol dlya sotovoj svyazi. Podderzhivaet skorosti 300,
1200, 2400, 4800, 7200, 9600 i 12000 bps (v novyh modelyah takzhe 14400 i 16800
bps).
* ASL (Adaptive Speed Leveling) - rasshirenie protokola v.42, razrabotannoe
firmoj USR i primenyaemoe v modelyah Courier. Predstavlyaet soboj nabor
dopolnitel'nyh funkcij takih kak Fall-Forward, Quick Retrain (tm), Assimetric
line transmition, extra v.42 service frames etc.
* ITU-T (The Telecommunications Sector of the International Telecommunications
Union) - mezhdunarodnaya organizaciya, razrabatyvayushchaya standarty dlya
telegrafnogo, telefonnogo i radiooborudovaniya. Staroe nazvanie - CCITT.
* NV RAM (NonVolatile Random Access Memory) - programmiruemaya pamyat', ne
sbrasyvayushchayasya pri vyklyuchenii pitaniya. Ispol'zuetsya dlya hraneniya tekushchej
konfiguracii.
* Protocol - sistema pravil i procedup, obespechivayushchaya soedinenie mezhdu dvumya
ili bolee ustrojstvami.
* RAM (Random Access Memory) - programmiruemaya pamyat', ne sohranyayushchayasya pri
vyklyuchenii pitaniya.
* ROM (Read Only Memory) - pamyat', dostupnaya tol'ko dlya chteniya.
* US Robotics (USR) - amerikanskaya firma, vypuskayushchaya modemy serij Sportster i
Courier.
* v.32 - standart ITU-T dlya raboty na skorostyah 4800 i 9600 bps.
* v.32bis - standart ITU-T dlya raboty na skorostyah 4800, 7200, 9600, 12000 i
14400 bps.
* v.32Terbo - standart AT&T dlya raboty na skorostyah 4800, 7200, 9600, 12000,
14400, 16800 i 19200 bps (with ASL up to 21600 bps).
* v.FC - standart Rockwell dlya raboty na skorostyah 14400, 16800, 19200, 21600,
24000, 26400 i 28800 bps.
* v.34 - standart ITU-T dlya raboty na skorostyah 2400, 4800, 7200, 9600, 12000,
14400, 16800, 19200, 21600, 24000, 26400 i 28800 bps.
* v.42 - LAPM korrekciya oshibok, 1200 bps i vyshe.
* v.42 bis - szhatie dannyh, 1200 bps i vyshe.
* MNP - korrekciya oshibok (levels 2, 3 i 4) i szhatie dannyh (level 5), 1200 bps
i vyshe.
Pri podgotovke dannogo FAQ byli ispol'zovany materialy, predostavlennye
Misha Serov (2:5030/106.10)
Anatoly Skoblov (2:5030/78)
Bill Garfield (1:115/500.0)
Nick Soveiko (2:5030/108.25)
Grisha Rusanov (2:5020/69.15)
Mikle Likhachev (2:5030/131)
Dennis Kornyukhin (2:5020/150)
Vladimir Dodonov (2:5020/251.12)
Dimka Kozlov (2:5020/246)
Boris Bass (2:5020/523.7)
All (*:*/*.*)
Za chto vyrazhayu im bol'shoe spasibo. :)
Robert Agababyan (2:5020/234), 04-Jun-96, 17:00.
Tel: (095)583-5281. ARA (C) 1994,95,96.
Document revision 1.10.
Q: A kak mne soedinit'sya na HST s drugim v.Everything? Skol'ko ne pytayus'
stavit' B1 - vse ravno na v.34 soedinyaetsya. :(
A: V modemah v.Everything v.34 i v.FC imeyut bol'shij prioritet, chem HST i
poetomu dlya konnekta na HST ih neobhodimo zapretit'. Dlya etogo nado
dat'
vyzyvayushchemu modemu sleduyushchuyu komandu: ATB1S54=192S56=192. Inogda etogo
ne
hvataet i prihoditsya dobavlyat' eshche i S27=4S34=6.
Q: A kak mne izbavit'sya ot takogo glyuka - pri vklyuchennom adaptivnom otvete
modem pri pozyve stancionnogo AON-a mgnovenno perehodit v rezhim faksa?
A: Dlya lecheniya nado postavit' vmesto ATA sleduyushchuyu strochku otveta na
vhodnoj
zvonok - ATX3S6=1DTR.
Q: Kak mne izbavitsya ot konnektov bez korrekcii oshibok? A to ochen' chasto
modem
soedinyaetsya na 14400/NONE i visit na linii, poka ya ego ne sbroshu.
A: Dlya etogo nado dat' komandu AT&M5. Pri etom zapreshchayutsya vse /NONE
konnekty
za isklyucheniem CONNECT 300.
Q: A kak mne zagruzit' novuyu proshivku v svoj modem (flash)? YA pereproboval
mnogie SDL (11/21, 12/02 FT i Release) i vse oni pishut "incompatible country
code".
A: |ti proshivki sdelany dlya US/Canada. Kod strany mozhno posmotret' po komande
ATI7 v punkte "Product type". Esli tam stoit chto-libo otlichnoe ot US/Canada,
naprimer, International ili Finland, to nado libo najti sootvestvuyushchij etoj
strane SDL libo izmenit' kod strany na US/Canada v blizhajshej apgrejdal'ne.
Q: Imeetsya USR Courier i na nem imeetsya indikator MR (Modem Ready). Vo vremya
sessii dannyj indikator chasten'ko gasnet i samo soboj na eto vremya sessiya
zamiraet. Hotelos' by uznat' iz-za chego mozhet eto proishodit' i kak eto
lechitsya (esli voobshche lechitsya).
A: Indikator MR gasnet vo vremya retrejna ili drugogo processa, svyazannogo s
nevozmozhnost'yu peredavat' dannye v dannyj moment vremeni. Sootvestvenno eto
nikak ne lechitsya i lish' informiruet pol'zovatelya o takom processe (obychno
eto retrejn ili zapros na retrejn ili fall-back/fall-forward).
Q: Kin'te nastrojki dlya Courier v.34.
A: ati4
USRobotics Courier 16800 HST Dual Standard V.34 Fax Settings...
B0 C1 E1 F1 L2 M1 Q0 V1 X7 Y0
BAUD=38400 PARITY=N WORDLEN=8
DIAL=PULSE ON HOOK TIMER
&A3 &B1 &C1 &D2 &G0 &H1 &I0 &K1 &L0 &M4 &N0
&P0 &R2 &S0 &T5 &U0 &X0 &Y1
S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002
S07=060 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000
S14=000 S15=000 S16=000 S17=000 S18=000 S19=000 S20=000
S21=010 S22=017 S23=019 S24=150 S25=005 S26=001 S27=000
S28=008 S29=020 S30=000 S31=000 S32=009 S33=000 S34=000
S35=000 S36=014 S37=000 S38=000 S39=000 S40=000 S41=000
S42=000 S43=200 S44=015 S45=000 S46=000 S47=000 S48=000
S49=000 S50=000 S51=000 S52=000 S53=000 S54=064 S55=000
S56=000 S57=000
LAST DIALED #:
OK
Q: Poyavilsya u menya vneshnij Courier v.34, International. I poyavilas' odna
problemka - posle nabora nomera on nachinaet protivno pishchat' zachem-to kazhdye
2 sekundy. CHto eto takoe i kak eto vyrubit'?
A: |to Calling Tones. Otklyuchaetsya eto komandoj S40=1.
Q: Kstati nikogda ne pol'zovalsya, a tut interesno stalo - chto delayut komandy
X5, X6 i X7 v Courier? A to v doke na sport tol'ko do X4 opisany.
A: Tebe pomozhet sleduyushchaya tablichka:
+---------------------------+----+----+----+----+----+----+----+----|
|Result Codes | X0 | X1 | X2 | X3 | X4 | X5 | X6 | X7 |
+---------------------------|----|----|----|----|----|----|----|----+
|0/OK | * | * | * | * | * | * | * | * |
|1/CONNECT | * | * | * | * | * | * | * | * |
|2/RING | * | * | * | * | * | * | * | * |
|3/NO CARRIER | * | * | * | * | * | * | * | * |
|4/ERROR | * | * | * | * | * | * | * | * |
|5/CONNECT 1200 | | * | * | * | * | * | * | * |
|6/NO DIAL TONE | | | * | | * | | * | * |
|7/BUSY | | | | * | * | * | * | * |
|8/NO ANSWER | | | | * | * | * | * | * |
|9/RESERVED | | | | | | | | |
|10/CONNECT 2400 | | * | * | * | * | * | * | * |
|11/RINGING | | | | | | * | * | * |
|12/VOICE | | | | | | * | * | |
|13/CONNECT 9600 | | * | * | * | * | * | * | * |
|18/CONNECT 4800 | | * | * | * | * | * | * | * |
|20/CONNECT 7200 | | * | * | * | * | * | * | * |
|21/CONNECT 12000 | | * | * | * | * | * | * | * |
|25/CONNECT 14400 | | * | * | * | * | * | * | * |
|43/CONNECT 16800 | | * | * | * | * | * | * | * |
|85/CONNECT 19200 | | * | * | * | * | * | * | * |
|91/CONNECT 21600 | | * | * | * | * | * | * | * |
|99/CONNECT 24000 | | * | * | * | * | * | * | * |
|103/CONNECT 26400 | | * | * | * | * | * | * | * |
|107/CONNECT 28800 | | * | * | * | * | * | * | * |
+---------------------------|----|----|----|----|----|----|----|----+
|Functions | | | | | | | | |
|Adaptive Dialing | | | * | * | * | * | * | * |
|Wait for 2nd Dial Tone (W) | | | | * | * | * | * | * |
|Wait for Answer (@) | | | | * | * | * | * | * |
|Fast Dial | | | * | | * | | * | * |
+---------------------------+----+----+----+----+----+----+----+----+
Q: A chto oznachaet DS v nazvanii Courier HST DS?
A: |to oznachaet Dual Standard - t.e. modem podderzhivaet dva standarta: kak
standarty ITU-T (v.xx - v.32bis, v.34 etc.) tak i svoj standart (HST).
Q: A pochemu y menya inogda vo vremya sessii zagoraetsya lampochka AA na moem
Courier?
A: V modemah USR Courier lampochka AA vo vremya CONNECT na HST pokazyvaet
napravlenie skorostnogo kanala HST. Kogda skorostnoj kanal napravlen na
priem (16800/450) - AA ne gorit, kogda zhe skorostnoj kanal napravlen na
posylku (450/16800) - AA zagoraetsya.
Q: A pravda chto v International modeli mozhno regulirovat' vyhodnoj uroven'?
A: Da, puchnaya regulirovka urovenya vyhodnogo signala est' vo vseh modelyah
Courier v.Everything za isklyucheniem US/Canada. Za eto otvechaet registr
S39 i vyhodnoj uroven' ustanavlivaetsya ishodya iz sleduyushchej tablicy:
S39 TX-Level, dBm
0..5 -4.5
6 -6.5
7 -6.5
8 -8.0
9 -8.6
10 -9.4
11 -10.6
12 -11.6
13 -13.3
14 -14.1
15..255 -14.8
Q: Podskazhite stroku inicializacii dlya moego USR.
A: Snachala nado v terminale dat' modemu komandu AT&F1&W. Zatem propisat' v
softe pervoj strokoj ATZ, a vtoroj AT&F1&K3. ATZ chistit pamyat' i eto izbavit
vas ot vseh glyukov ostavshihsya ot predydushchego konnekta. Primer:
Init1 AT Z|
Init2 ~~AT &F1 &K3|
Q: A ya inicializiruyu svoj modem komandoj ATZM0L0S0=0S1=0S6=255&F1 i nikakih
problem! Pravil'no li ya delayu?
A: Prakticheski vo vseh modemah (i USR ne isklyuchenie) vse chto vvedeno posle ATZ
- ignoriruetsya. Takzhe ne imeet smysl stavit' kakie-libo komandy pered AT&F1,
t.k. eta komanda podgruzhaet profajl iz PZU i sootvestvenno vse predydushchie
ustanovki zatirayutsya.
Q: A y menya v Windows'95 modem ne opoznaetsya - chto delat'?
A: Nado vybrat' Uninstall v Windows Setup i posle etogo installirovat' IBM OS/2
Warp 3.0 s Win-OS2.
Q: A chto oznachaet MSK v informacii vyvodimoj modemom po ATI7?
A: |to sokrashchenie ot Modem Sharing Kit. USR Total Control System proveryaet eto
slovo pri identifikacii modema. MSK vyvoditsya v zavisimosti ot odnogo iz
bitov v konfiguracii modema v NVRAM i bolee nigde etot bit ne ispol'zuetsya.
Q: A kakoj modem luchshe pokupat' International ili US/Canada?
A: Luchshe US/Canada. U International stoit usilenaya analogovaya chast' kotoraya na
nashih liniyah daet pryamo protivopolozhnyj zadumannomu effekt - slishkom
zavyshennyj uroven' vyhodnogo signala i peregruzka data-pump. Krome togo
novye proshivki dlya International vyhodyat gorazdo rezhe. Voobshchem, luchshe vsego
brat' imenno Courier v.Everything US/Canada.
Q: U menya Courier v.34 bez HST. Kak mne vklyuchit' v nem HST?
A: Nuzhno zagruzit' v nego SDL ot 01/11/95 v kotorom HST vklyuchaetsya nezavisimo
ot konfiguracii v NVRAM.
Q: A kakoj dolzhen byt' maksimal'nyj cps na 28800?
A: Za dolgie gody obshcheniya s modemami ya vyvel koefficient 0.91. Srednij cps v
sinhronnom rezhime pri 128-bajtnyh kadrah (MNP3-128 ili v.42) v obshchem sluchae
raven (DCE/8)*0.91.
Takim obrazom imeem sleduyushchuyu tablichku:
2400 - 273
4800 - 546
7200 - 819
9600 - 1092
12000 - 1365
14400 - 1638
16800 - 1911
19200 - 2184
21600 - 2457
24000 - 2730
26400 - 3003
28800 - 3276
31200 - 3549
33600 - 3822
Na protokolah s korrekciej oshibok otlichnyh ot MNP3-128 i v.42 (naprimer, HST)
libo pri ispol'zovanii 256-bajtnyh kadrov (bol'shinstvo realizacij MNP3) cps
obychno chut' povyshe i koefficient povyshaetsya do 0.93. Sootvestvuyushchie znacheniya
poschitajte sami po vysheprivedennoj formule. Otmechu lish' chto dlya 16800/HST eto
chislo budet ravno 1953.
Dolgaya praktika podtverdila moyu teoriyu na 100%. :)
Q: Kupil nedavno rodnoj chernyj kur'er, a v nego ni odna SDL ne gruzitsya. :(
A: USR v celyah udeshevleniya proizvodstva povsemestno otkazyvaetsya ot dorogih
intelovskih mikroshem. V sportah oni sdelali novuyu model' polnost'yu na TMS
bez Intel 80186/8, a v kur'erah oni zamenili intelovskij flash na AMD-shnyj.
Tak kak algoritmy zapisi y nih raznye, to v takie modemy budut gruzit'sya
tol'ko proshivki, vypushchennye pozzhe dekabrya 95-go goda. Dlya International
modeli takoj proshivki poka net voobshche, dlya US/Canada - eto 11/01/95,
01/23/96 i 04/29/96.
Q: A kakaya samaya luchshaya proshivka dlya Courier V.Everything?
A: Soglasno moim issledovaniyam naibolee ustojchivo vedet sebya proshivka ot
07/05/95. K nej prakticheski net nikakih pretenzij. V bolee pozdnih proshivkah
nichego sushchestvenno novogo i poleznogo ne poyavilos', no y nih nablyudayutsya
neponyatnye mne poka zatyki na protokole V.34. Tak chto rekomenduyu stavit'
imenno proshivku ot 07/05/95 podpatchennuyu na predmet nelovli Busy i UTR.
Robert Agababyan (2:5020/234), 01-Jul-96, 13:38.
Tel: (095)583-5281.
+ Origin: USR Upgrade Team, Voice (095)583-5281,(095)283-4180 (2:5020/234)
ARA greet you.
* Origin: Ace Hub, Enhanced Courier v.All, 0++-8++, 283-4180 (2:5020/234.2)
Last-modified: Tue, 12 Dec 2000 10:53:35 GMT