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- ßÜ ÜÛÝ ß ÞÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛÜ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ ÛÛÛ
- ßßßßßß ßÄ Äßßßß ßßßß ßßßßß ßßßßßß ßßßßß ßßß ßßß ßßßßß ßßßßß
- _____________________________________________________________
- / _______________________________________ \
- / | <> <> <> <> <> <> <> <> <> | COURIER HST \
- / |_HS_AA_CD_OH_RD_SD_TR_MR_RS_CS_ARQ_SYN_| ==> 14400 \
- /___________________________________________________________________\
- | | | | | | | | | | | | | | | | | | | | | | | | | | | \____/ |
- |__|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|__________|
- \__/ \__/
- ===============================================================================
- CAPTURE OF 14400 HST SETTINGS
- ===============================================================================
- [ati4]
-
- USRobotics Courier 14400 HST Settings...
-
- B0 C1 E1 F1 M1 Q0 V1 X7
- BAUD=19200 PARITY=N WORDLEN=8
- DIAL=HUNT ON HOOK TIMER
-
- &A3 &B1 &C1 &D2 &G2 &H1 &I0 &J0 &K3
- &L0 &M4 &N0 &P0 &R2 &S0 &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=038
- 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=000 S26=001 S27=000
- S28=008 S38=000
-
- [ati5]
-
- USRobotics Courier 14400 HST NRAM Settings...
-
- DIAL=TONE B0 F1 M1 X7
- BAUD=19200 PARITY=N WORDLEN=8
-
- &A3 &B1 &G2 &H1 &I0 &J0 &K3 &L0
- &M4 &N0 &P0 &R2 &S0 &X0 &Y1
-
- S02=043 S03=013 S04=010 S05=008
- S06=002 S07=060 S08=002 S09=006
- S10=007 S11=038 S12=050 S13=000
- S15=000 S19=000 S21=010 S22=017
- S23=019 S24=150 S26=001 S27=000
- S28=008 S38=000
- ~r
- _____________________________________________________________
- / _______________________________________ \
- / | <> <> <> <> <> <> <> <> <> <> | COURIER HST \
- / |_HS_AA_CD_OH_RD_SD_TR_MR_RS_CS_SYN_ARQ| ==> 16800 DUAL \
- /___________________________________________________________________\
- \ | | | | | | | | | | | | | | | | | | | | | | | | | | \____/ /
- \_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_________/
- \__/ \__/
- ===============================================================================
- CAPTURE OF 16800 DUAL SETTINGS
- ===============================================================================
- [ati4]
-
- USRobotics Courier 16800 HST Dual Standard Fax Settings...
-
- B0 C1 E1 F1 M1 Q0 V1 X7
- BAUD=38400 PARITY=N WORDLEN=8
- DIAL=TONE ON HOOK TIMER
-
- &A3 &B1 &C1 &D2 &G2 &H1 &I0 &K3 &L0 NOTE: &G2 and B0 is set
- &M4 &N0 &P0 &R2 &S0 &T5 &X0 &Y1 %R0 for overseas callers.
-
- 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=001 S33=000 S34=000 S35=000
- S36=000 S37=000 S38=000 S39=000 S40=000 S41=000
- S42=126 S43=200 S44=015
-
- [ati5]
-
- USRobotics Courier 16800 HST Dual Standard Fax NVRAM Settings...
-
- DIAL=TONE B0 F1 M1 X7
- BAUD=19200 PARITY=N WORDLEN=8
-
- &A3 &B1 &G2 &H1 &I0 &K1 &L0 &M4
- &N0 &P0 &R2 &S0 &T5 &X0 &Y1 %R0
-
- S02=043 S03=013 S04=010 S05=008 S06=002 S07=060
- S08=002 S09=006 S10=007 S11=070 S12=050 S13=000
- S15=000 S19=000 S21=010 S22=017 S23=019 S24=150
- S25=005 S26=001 S27=000 S28=008 S29=020 S32=001
- S33=000 S34=000 S35=000 S36=000 S37=000 S38=000
- S41=000 S42=126 S43=200 S44=015
- ~r
- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
- PREFERENCES:
-
- 1. RATE 19,200 baud
- 2. F8N1
- 3. RTS/CTS handshaking (MANDATORY!!!!)
- 4. Buffering 4K--->try reducing to 2K after initial trials if rate
- below 1640cps or if SD/TR/CS/RS lights blink
- with an established V.42bis system that is known
- to operate correctly.
- ~r
- .-----------------.
- | HST INFORMATION |
- `-----------------'
-
- The original HST modem has a carrier rate of 9600bps (not baud; baud doesn't
- mean what you think it means). Bps means bits per second. The newer model of
- HST has a maximum carrier rate of 14400bps, and THERE IS NO COMPRESSION USED TO
- ACCOMPLISH THAT. The Dual Standard modem has the 14400bps HST capability, but
- will optionally allow v.32 connections. v.32 has a carrier rate of 9600bps in
- both directions (as opposed to HST modulation, which can only communicate at
- 9600/14400 in one direction at a time; it communicates in the other direction
- at 300 or 450bps). The newest Dual Standard models support v.32bis, which is
- 14400bps in both directions.
-
- That is all without compression or start/stop bit stripping. MNP5 gives you a
- theoretical possible 2:1 compression ratio; v.42bis gives you a theoretical
- possible 4:1 compression ratio. Therefore the maximum throughput (not carrier
- rate) you can get on the old model is 1920cps (characters per second), and for
- the new model is 3840cps. The reason you can't go any higher on the 14400
- model, even with theoretical 4:1 compression, is that the highest port rate you
- can lock the modem at is 38400bps, which at a fixed character size of 10
- bits/character gives you 3840cps. The actual throughputs most people
- experience are usually much lower than the maximum.
-
- V.32
- is a modulation standard to get 9600 full duplex, it is supported by the
- Telebit T2500 and the USR Dual Standard. Both companies make V.32 only modems
- as well. V.32 modems from Intel and PP&S tend to be cheaper than either the
- Telebit or the USR V.32 modems.
-
- V.32bis
- is a modulation standard to get 14.4K full duplex, it is supported by the newer
- USR Dual standard modems as well as modems made by DigiComm. Final approval of
- V.32bis is not until next month, however it is not likely to change.
-
- V.42
- is a standard for error detection/correction MNP levels 1-4 are a subset of
- V.42, allowing V.42 modems to use MNP error detection/ correction. This mode
- is supported by the Telebit T2500, the USR Dual Standard and the USR HST 14.4.
- It is supported by most newer V.32 modems by other companies as well.
-
- V.42bis
- is a standard for on the fly compression. It normally comes with V.42 error
- correction/detection. V.42bis allows a maximum compresion of 4:1 however like
- any other compression system it will not cause a very large increase in speed
- on compressed files, unlike MNP-5 it will not however increase the amount of
- data (slowing things down). This is supported by the Telebit T2500 and the USR
- Dual Standard and HST 14.4 modems. It is supported by most of the newer V.32
- modems as well.
- ~r
- .--------------------.
- | V.FAST INFORMATION |
- `--------------------'
-
- U.S. ROBOTICS ANNOUNCES THE LAST MODEM YOU'LL EVER BUY
- Provides Migration Path to Forthcoming CCITT 28.8 Kbps Standard
-
- SKOKIE, Ill. -- June 8, 1992 -- U.S. Robotics today announced an upgrade
- program for the CCITT-proposed standard of 28.8 Kbps, previously referred to as
- V.FAST. The Courier V.32bis, Courier HST Dual Standard and Shared Access Modem
- Sharing Kits are the products currently included in the program. Field
- upgrades will be available for $299 as soon as the CCITT 28.8 Kbps draft
- recommendation is completed. Official approval of the standard is not expected
- until January, 1994.
-
- "The CCITT-proposed 28.8 Kbps standard won't be a reality for most
- manufacturers until 1994," said Jonathan Zakin, U.S. Robotics executive vice
- president, sales and marketing. "By offering modems ready for 28.8 Kbps now,
- we're providing insurance against technical obsolescence. Customers can
- purchase a Courier high-speed modem or Shared Access Modem Sharing Kit now and
- take advantage of the most updated technology available. When the 28.8 Kbps
- standard becomes available later, they'll already have a cost-effective upgrade
- option and won't have to re-invest in new equipment."
-
- "Key to the 28.8 Kbps program is the fact that the upgrade to the Courier
- high-speed modems and Shared Access Modem Sharing Kits can be completed by the
- end user at their worksite, which reduces their "down" time and eliminates
- excess costs like shipping and handling," continued Zakin. "You may hear about
- other 28.8 Kbps modems that are available now, but until the standard is
- defined, no one knows what hardware will be needed to comply. Our unique modem
- architecture makes future "field" upgrades a realistic and simple procedure."
-
- Because of U.S. Robotics' advanced modular modem architecture, the company's
- Courier V.32bis, Courier HST Dual Standard, and Shared Access modems are
- readily upgradable to 28.8 Kbps. The modems are made up of a motherboard and a
- smaller daughterboard, which holds the modems' microprocessors and firmware.
- The current, high-speed daughterboard can easily be replaced with a new board
- containing the 28.8 Kbps CCITT standard. U.S. Robotics is the only modem
- manufacturer to implement this kind of flexible design.
-
- "In the CCITT, the previously called "V.FAST" standard has gained universal
- support at the 28.8 Kbps speed," said Dale Walsh, U.S. Robotics vice
- president, advanced development and participant in the CCITT committee on the
- 28.8 Kbps standard. "This is how our modular architecture works. The data
- pump (which executes the modulation and demodulation of the data), and the key
- controller functions (which perform the data compression, error control and the
- AT command set) are on one board, making upgrades simple. We can easily make
- the data pump faster and upgrade the controller functions to keep up with the
- new speed. It's all in just one small plug-in card."
-
- Because compatibility with CCITT standards is crucial, U.S. Robotics'
- availability and implementation of the 28.8 Kbps standard will depend on the
- CCITT's progress. At this time, the standard is expected to define a connect
- speed of 28.8 Kbps, two times faster than V.32 bis, the fastest CCITT standard
- now available.
-
- U.S. Robotics is one of the first vendors to announce a program for 28.8 Kbps
- compatibility. The company has a history of industry "firsts," including the
- first CCITT V.32 bis modem from a major manufacturer, the first self-managing
- modem management system and the first portable CCITT V.32 modem.
-
- U.S. Robotics will upgrade any Modem Sharing Kit to 28.8 Kbps. Current
- Courier models, which have the smaller footprint and a higher, 57.6 Kbps, DCE
- to DTE (modem-to-computer) interface speed, are also upgradable. The company's
- upgrade program does not include WorldPort and Sportster modems.
-
- U.S. Robotics Courier modems offer a wide range of features, including fax,
- remote configuration, and synchronous capabilities. The Shared Access Modem
- Sharing Kits, which began shipping in March, 1992, allow for the pooling of
- modems on a LAN so that a LAN user can access them for dial-in or dial-out
- communications.
-
- The following products will be upgradable to 28.8 Kbps:
-
- Courier V.32 bis, internal and external (only 57,6 kpbs versions) Courier HST
- Dual Standard, internal and external (57 kbps only) Courier V.32 bis FAX,
- internal and external Courier HST Dual Standard FAX, internal and external
- Shared Access Modem Sharing Kit Single Port and Dual Port
-
- U.S. Robotics, Inc., (NASDAQ: USRX) is a leading designer, manufacturer and
- marketer of data communications hardware and software. Product lines include
- the Shared Access communications resource-sharing products; Total Control modem
- management system for central data sites; BLAST software products for terminal
- emulation, file transfer and remote control; Courier data and fax/data modems
- for corporate users; WorldPort data and fax/data portable modems for traveling
- professionals; and Sportster data and fax/data modems for small business, home
- office and entry-level users. Both corporate headquarters and manufacturing
- operations are based in Skokie, Ill. U.S. Robotics owns and operates Miracom
- Technology Ltd., Slough, England, and U.S. Robotics, s.a., Lille, France. The
- company markets its products to business, industry, government agencies and
- original equipment manufacturers.
- ~r
-