COURIER HST APPENDIX F TECHNICAL SPECIFICATIONS Compatibility USR-HST, 9600 bps, asynchronous, asymmetrical (9600/450 bps with automatic handshake adjustment to 300-bps), trellis-coded modulation, Quadrature Amplitude Modulation (QAM) USR-HST, 7200 bps, asynchronous, asymmetrical (9600/450 bps with automatic handshake adjustment to 300-bps), trellis-coded modulation, Quadrature Amplitude Modulation (QAM) USR-HST, 4800 bps, asynchronous, asymmetrical (9600/450 bps with automatic handshake adjustment to 300-bps), unencoded Quadrature Amplitude Modulation (QAM) CCITT recommendation V.22bis, 2400 bps, asynchronous, Quadrature Amplitude Modulation (QAM) Bell 212A, 1200 bps, asynchronous, Differential Phase Shift Keying (DPSK) Bell 103, 300 bps, asynchronous, Frequency Shift Keying (FSK) Microcom Networking Protocol (MNP), Service Levels 1-5 at 2400/1200 bps USRobotics proprietary HST protocol at 9600/7200/4800 bps, similar to MNP Levels 1-5, adapted for asymmetrical modulation RS-232C terminal/modem interface Superset of industry standard AT command set, S-registers, DIP switches Online data rate fallback 7200, 4800 bps Phone Line Interface RJ11, RJ12, RJ13, RJ41, RJ45 phone jacks Communications Channel Full/half duplex on 2-wire dial-up, dedicated, or leased phone lines, demand-driven high speed channel turnaround F-1 COURIER HST Data Rates 300, 1200, 2400, 4800, 7200, 9600 bits per second Operational Modes Auto Dial/Answer, Manual Originate/Answer Dialing Rotary (pulse 0-9), Touch-Tone (DTMF 0-9, #, *), a-z when in Quote (") Mode Data Format Binary, serial, asynchronous; defaults to 7-bit word length, even parity Start Data Stop Bits Bits Parity Bits 1 7 Even, Odd 1 Mark, Space 1 7 None, Even, Odd, 2 Mark, Space 1 8 None 1, 2 Front Panel Indicators HS High Speed (9600 bps) AA Auto Answer/Answer CD Carrier Detect OH Off Hook RD Receive Data SD Send Data TR Terminal Ready (DTR) MR Modem Ready/Power RS Request to Send CS Clear to Send ARQ Error control connection established AL Analog Loopback Self-Test Programmable S-Registers Values in parentheses are defaults: Number of rings on which to answer (1) ASCII character definitions, decimal: escape code (43), Carriage Return (13), Line Feed (10), Backspace (8) Timing: Wait before dialing (2 sec) Carrier Detect wait (30 sec) Pause in Dial, Repeat commands (2 sec) F-2 COURIER HST Remote Carrier Detect before local recognition (0.6 sec) Disconnect at loss of carrier (0.7 sec) Escape code guard time (1 sec) Touch-Tone duration, spacing (70 Ms) Break length, to DTE (100 Ms) Disable MNP Levels 3, 4 Disable 450-bps back channel, force 300 bps Optional non-error control Transmit buffer size Auto Dial stored phone number on DTR, reset or power on Answer in Originate Mode Modem self-testing (0, Data Mode) Inactivity Timer (0, disabled) Switch Functions Externally accessible. Values in parentheses are factory settings: UP = OFF (open), DOWN = ON (closed). Volume control DTR override (DOWN) Result code mode (UP, verbal) Result code display (DOWN, displayed) Command Mode echo (UP, echo ON) Auto Answer (DOWN, AA suppressed) CD override (DOWN) RJ11/RJ13 jack (UP, RJ11) Smart/Dumb mode (DOWN, Smart) Online Escape code with/without disconnect (DOWN, no disconnect) Load NRAM defaults/ROM factory settings (UP, NRAM) RS-232C Modem/Terminal data interface (UP, normal assignments of Pins 2 and 3) Flow Control Buffers Transmit Buffer: Error control: 3.5k 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 Control Commands User-programmable nonvolatile memory (NRAM) Data compression Fixed/variable DTE and link rates F-3 COURIER HST Error control Error control result codes Transmit data flow control (hardware, software) Received data flow control (hardware, software) Command mode, online echoing Verbal/numeric result codes Standard, Extended, Advanced result code sets Result code display ON/OFF Speaker OFF, ON until CD, ON through CD and data transmission, ON after last digit dialed until CD Command Mode/online toggle Voice/data communications Adaptive dialing Fast dialing, search for dial tone Wait for second dial tone, then continue Wait for answer, then continue Dial alphabetic string Dial one of four phone numbers stored in NRAM Flash switch-hook to transfer call Reset to NRAM defaults Load ROM factory settings Request to Send (RTS) override Data Set Ready (DSR) override Break handling Test Options Analog loopback (2400/1200/300 bps) Dial test Test pattern (2400/1200 bps) Analog loopback with test pattern (2400/1200 bps) Call Progress Codes NO DIAL TONE BUSY NO ANSWER RINGING VOICE Equalization Adaptive F-4 COURIER HST Transmitter Carrier Frequencies USR-HST Originate Mode: 350 Hz Answer Mode: 1800 Hz V.22bis, 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 Receiver Carrier Frequencies USR-HST Originate Mode: 1800 Hz Answer Mode: 350 Hz V.22bis, 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 Certification FCC Part 68 & Part 15, Subpart J, Class B Domestic; DOC (Canada) Power Adapter UL listed, CSA approved, Supply voltage: 115 VAC, 60 Hz, 16 VAC Output Power Consumption 10 watts Failed Call Timeout 30-sec. default, programmable 2-255 sec. F-5 COURIER HST Answer Tone Timeout 30 sec. Answer Tone Detector 2150-2300 Hz Loss of Carrier Timeout (Disconnect Timer) 0.7-sec. default, programmable 0.2-25.5 sec. Receive Sensitivity -43 dBm Transmit Level - 9 dBm Transmitter Frequency Tolerance .01 % Size 8.30 x 12.65 x 1.57 inches F-6