Телекоммуникационные средства в современном компьютерном мире
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: . ., .
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1997
I.
MNP-
MNP-
III.
I.
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- -,
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BBS - Bulletin Board System (. -
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, on-line , ..
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. FidoNet,
Internet/Relcom.
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II. .
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- 80- Hayes -
IBM PC.
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- 0 1.
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- MNP10. MNP1, MNP2, MNP3,
MNP4, MNP5, MNP7. MNP5, ..
MNP7 MNP10 ,
. Internet. ,
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.
Zmodem, Sealink, Ymodem
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, .
,
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. Bimodem, Puma, Janus, Zedzap.
MNP-
MNP (Microsoft Network Protocols) -
, Microsoft.
. 10 :
MNP1. ,
. MNP.
MNP2. ,
.
MNP3. ,
( -
).
- , ,
,
20%.
MNP4. , ,
,
MNP2 MNP3. ,
.
,
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20% .
MNP5. MNP4, MNP5
.
,
.
. 35%
. 20% MNP4
50%. , ,
,
.
MNP6. MNP5 MNP6
. MNP6
V.29.
MNP7.
.
MNP9. V.32 ,
.
MNP10. ,
, , , .
:
-
-
-
MNP .
MNP-.
MNP,
MNP- MNP-.
MNP-
MNP- :
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.
- . ,
MNP-.
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MNP-.
MNP, .
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MNP.
.
(
PC- (PCMCIA),
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,
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( )
FIFO. (First Input First Output - ,
). FIFO , .
. IRQ(Interrupt Request)
,
. . FIFO
.
. Windows95,
OS/2, Windows NT, UNIX .
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, ,
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,
RESET.
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FIFO. FIFO
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MR(Modem Ready)
, .
TR(Terminal Ready)
, DTR(Data Terminal Ready),
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HS(High Speed)
,
CD(Carrier Detect)
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,
AA(Auto Answer)
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. Ring(. -
), .
OH(Off Hook)
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RD(Receive Data)
.
SD(Send Data)
, .
14400 V32 V32bis(
, HST V32terbo).
. , ,
. ,
28800 V34(
V.Fast V.Everything).
V34+. / 33600.
( .
.
? HST,
USRobotics. Zyxel .
Zyx ZyCell. Zyx
16800 19200. ZyCell -
.
,
.).
.
GVC
, ,
.
GVC 14440 F1114HV -
. BUSY.
-, II.
.
.
ZyXEL
,
,
USRobotics.
ZyXEL .
1496 - V32 V32bis,
: Zyx ZyCell.
(VOICE) , .
( -
).
1496 ,
, .
ZyXEL
, 115200 .
USRobotics
: USR Sportster, USR Courier,
USR WorldPort . WorldPort
. - .
Courier
.
Sportster.
14400 33600. ,
, , .
, Sportster
-
Courier. USR Sportster
Courier.
HST(High Speed Technology).
1991 :
Sportster Courier?
, Sportster Courier ,
NVRAM (Non
Violatible Random Access Memory - )
Sportster HST
Courier.
III.
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:
.. .. Microsoft Windows 95. Microsoft Plus!
. . ABF, , 1996
.. .. ! -, ,
, -ail, BBS. . ABF, , 1996
.. -: .
. -, .-, 1995