Category : Tutorials + Patches
Archive   : USRMANUL.ZIP
Filename : APH.ASC
APPENDIX H. TECHNICAL SPECIFICATIONS
USROBOTICS HIGH SPEED TECHNOLOGY (HST)
14.4K bps, synchronous/asynchronous,
asymmetrical, 14.4K/450 or 14.4K/300 bps
with automatic handshake adjustment to
300 bps, Trellis Coded Modulation (TCM),
Quadrature Amplitude Modulation (QAM)
12K bps, synchronous/asynchronous,
asymmetrical, 12K/450 or 12K/300 bps
with automatic handshake adjustment to
300 bps, Trellis Coded Modulation (TCM),
Quadrature Amplitude Modulation (QAM)
9600 bps, synchronous/asynchronous,
asymmetrical, 9600/450 or 9600/300 bps
with automatic handshake adjustment to
300 bps, Trellis Coded Modulation (TCM),
Quadrature Amplitude Modulation (QAM)
7200 bps, synchronous/asynchronous,
asymmetrical, 7200/450 or 7200/300 bps
with automatic handshake adjustment to
300 bps, Trellis Coded Modulation (TCM),
Quadrature Amplitude Modulation (QAM)
4800 bps, synchronous/asynchronous,
asymmetrical, 4800/450 or 4800/300 bps
with automatic handshake adjustment to
300 bps, Quadrature Amplitude Modulation
(QAM)
CCITT V.32 BIS
14.4K bps, synchronous/asynchronous,
Trellis Coded Modulation (TCM)
Technical Specifications H-1
COURIER HIGH SPEED MODEMS
12K bps, synchronous/asynchronous,
Trellis Coded Modulation (TCM)
9600 bps, synchronous/asynchronous,
Trellis Coded Modulation (TCM)
7200 bps, synchronous/asynchronous,
Trellis Coded Modulation (TCM)
4800 bps, synchronous/asynchronous,
Quadrature Amplitude Modulation (QAM)
H-2 Technical Specifications
COURIER HIGH SPEED MODEMS
ADDITIONAL COMPATIBILITY FEATURES
CCITT V.25 2100 Hz tone
CCITT V.23, 1200 bps, asymmetrical
(1200/75 bps), Frequency Shift Keying
(FSK)
CCITT V.22 bis, 2400 bps, synchronous/
asynchronous, Quadrature Amplitude
Modulation (QAM)
CCITT V.22, 1200 bps,
synchronous/asynchronous, Differential
Phase Shift Keying (DPSK)
Bell 212A, 1200 bps,
synchronous/asynchronous, Differential
Phase Shift Keying (DPSK)
Bell 103, 300/110 bps, asynchronous,
Frequency Shift Keying (FSK)
CCITT V.21, 300 bps, asynchronous,
Frequency Shift Keying (FSK)
300/110 bps, asynchronous, variable
Frequency Shift Keying (FSK)
USRobotics HST error control protocol,
asymmetrical mode, at
14.4K/12K/9600/7200/4800 bps, 450/300
bps back channel
CCITT V.42 error control protocol at
14.4K/12K/9600/7200/4800 bps (V.32 bis
mode) and at 2400/1200 bps
CCITT V.42 bis data compression
Microcom Networking Protocol (MNP) error
control protocol, Levels 2-4 at
Technical Specifications H-3
COURIER HIGH SPEED MODEMS
14.4K/12K/9600/7200/4800 bps (V.32 bis
mode) and at 2400/1200 bps
Microcom Networking Protocol (MNP) Level
5 data compression at
14.4K/12K/9600/7200/4800/2400/1200 bps
DB-25 RS-232 terminal/modem interface
Superset of industry standard AT command
set, S-registers, DIP switches
Optional MI/MIC closure
Optional pulsed DSR
H-4 Technical Specifications
COURIER HIGH SPEED MODEMS
DTE RATES
38.4K, 19.2K, 9600, 4800, 2400, 1200,
300, 110 bps
LINK RATES
14.4K, 12K, 9600, 7200, 4800, 2400,
1200, 300, 110 bps
ONLINE FALLBACK/FALL FORWARD
14.4K, 12K, 9600, 7200, 4800 bps
PHONE LINE INTERFACE
RJ11, RJ45S phone jacks
COMMUNICATIONS CHANNEL
Full/half duplex on 2-wire dial-up,
dedicated, or leased phone lines;
demand-driven high speed channel
turnaround in HST mode; symmetrical
speeds in V.32 bis mode
OPERATIONAL MODES
Synchronous/Asynchronous, Auto
Dial/Answer, Manual Originate/Answer,
Smart/Dumb mode
DIALING
Rotary (pulse 0-9), Touch-Tone (DTMF 0-
9, #, *), a-z when in Quote (") Mode
Technical Specifications H-5
COURIER HIGH SPEED MODEMS
DATA FORMAT
Binary, serial; defaults to 7-bit word
length, even parity
Start Data Stop
Bits Bits Parity Bits
1 7 Even, Odd 1
Mark, Space
1 7None, Even, Odd,2
Mark, Space
1 8 None 1, 2
H-6 Technical Specifications
COURIER HIGH SPEED MODEMS
FRONT PANEL STATUS LIGHTS
HS High Speed (above 2400 bps)
AA Auto Answer/Answer
CD Carrier Detect
OH Off Hook
RD Received Data
SD Send Data
TR Terminal Ready (DTR)
MR Modem Ready/Test Mode
RS Request to Send
CS Clear to Send
SYN Synchronous Mode
ARQ Error control connection
established
FLOW CONTROL BUFFERS
Transmit Buffer
Error control: 3.25k bytes
Non-Error control: 1.5k bytes, 128-
byte option
Receive Buffer: 2K bytes
COMMAND BUFFER
40 characters, exclusive of AT prefix,
Carriage Return and spaces
TEST OPTIONS
Analog loopback with test pattern
Remote digital loopback
Digital loopback
Test pattern
Dial test
Technical Specifications H-7
COURIER HIGH SPEED MODEMS
CALL PROGRESS CODES
NO DIAL TONE
BUSY
NO ANSWER
RINGING
VOICE
FAILED CALL TIMEOUT
60-sec. default, programmable 2-255 sec.
ANSWER TONE TIMEOUT
60 sec.
ANSWER TONE DETECTOR
2200-2300 Hz
LOSS OF CARRIER (DISCONNECT TIMER)
0.7-sec. default, programmable 0.2-25.5
sec.
EQUALIZATION
Adaptive
TRANSMITTER CARRIER FREQUENCIES
USR-HST, 450 bps back channel
Originate Mode:375 Hz
Answer Mode:1800 Hz
USR-HST, 300 bps back channel
Originate Mode:350 Hz
H-8 Technical Specifications
COURIER HIGH SPEED MODEMS
Answer Mode:1800 Hz
V.32 bis
Originate Mode:1800 Hz
Answer Mode:1800 Hz
Technical Specifications H-9
COURIER HIGH SPEED MODEMS
V.23
Originate Mode:
Mark:390 Hz
Space:450 Hz
Answer Mode:
Mark:1300 Hz
Space:2100 Hz
V.22 bis, V.22, Bell 212A
Originate Mode:1200 Hz
Answer Mode:2400 Hz
Bell 103
Originate Mode:
Mark:1270 Hz
Space:1070 Hz
Answer Mode:
Mark:2225 Hz
Space:2025 Hz
V.21
Originate Mode:
Mark:980 Hz
Space:1180 Hz
Answer Mode:
Mark:1650 Hz
Space:1850 Hz
RECEIVER CARRIER FREQUENCIES
USR-HST, 450 bps back channel
Originate Mode:1800 Hz
Answer Mode:375 Hz
USR-HST, 300 bps back channel
Originate Mode:1800 Hz
Answer Mode:350 Hz
V.32 bis
Originate Mode:1800 Hz
Answer Mode:1800 Hz
H-10 Technical Specifications
COURIER HIGH SPEED MODEMS
V.23
Originate Mode:
Mark:1300 Hz
Space:2100 Hz
Answer Mode:
Mark:390 Hz
Space:450 Hz
V.22 bis, V.22, Bell 212A
Originate Mode:2400 Hz
Answer Mode:1200 Hz
Bell 103
Originate Mode:
Mark:2225 Hz
Space:2025 Hz
Answer Mode:
Mark:1270 Hz
Space:1070 Hz
V.21
Originate Mode:
Mark:1650 Hz
Space:1850 Hz
Answer Mode:
Mark:980 Hz
Space:1180 Hz
RECEIVE SENSITIVITY
- 44 dBm + 2 dBm
TRANSMIT LEVEL
- 9 dBm maximum
TRANSMITTER FREQUENCY TOLERANCE
.01%
Technical Specifications H-11
COURIER HIGH SPEED MODEMS
CERTIFICATION
FCC Part 68 and Part 15, Class B
Domestic; DOC (Canada), UL listed
POWER CONSUMPTION
5 watts
SIZE
8.30 x 12.65 x 1.57 inches
H-12 Technical Specifications
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