Description

UDS RM16M 2440 modem card 62245083
UDS 2440 modem 62245079 stand alone AC power
UDS 2440 modem 62245116 stand alone DC power

The UDS 2440 modem card provides full-duplex 2-wire communications over either dial-up or private leased lines at data rates of up to 2400 bits per second (bps). It is compliant with CCITT standard V.22 bis and supports MNPTN levels 2 through 5.

Serial EIA-232 interface with Data Terminal Equipment
Communicates with DTE at rates of 9600,4800, 2400, 1200, 600, 300, and 110 bps
Speed conversion and buffering of data from the DTE Automatic rate and parity selection for the DTE
Multiple online and offline tests and diagnostics Configuration parameters stored in nonvolatile memory
LED indicators for communications status

The modem has the following features:.

Modulation compatible with the following standards:

CCITT V.22 bis CCITT V.22 (except at 600 bps) Bell 212A Bell 103
Supports AT command set for configuration and operation
Supports MNP protocol for error-free communications
Data compression for increased throughput
User-definable protocol fallback list
Auto answer and autodial, with storage for up to 6 telephone numbers in nonvolatile memory
LCD front panel display for status information, diagnostics, and modem configuration
Password-protected remote configuration mode
Asynchronous or synchronous operation
Connects directly to the telephone line via standard Universal Service Ordering Code (USOC) modular plugs and jacks

Appendix A Specifications

FCC REGISTRATION
The FCC registration number is located on a

NUMBER
label on the bottom of the modem standalone unit or on the printed circuit board for insert-card units.

PHYSICAL Dimensions – standalone:
Width: 7.00 inches (17.8 cm) Depth: 9.60 inches (24.4 cm) Height: 2.25 inches (5.7 cm) Weight: 2 pounds, 10 oz. (1.2 kg)

ENVIRONMENTAL
Operating temperature: 32? -122? F (0? – 50? C) Relative humidity: 95% noncondensing

POWER
The 2440 can be ordered for operation with one
REQUIREMENTS of three power input options.
Voltage: 115 Vac ? 10%; 50-60 Hz, 230 Vac ? 10%; 50-60 Hz, or 12 to 60 Vdc
Power consumption: 8 watts nominal Fuse: 1/4 Amp Slow-Blow (115 Vac model)

Specifications
TELEPHONE LINE Types supported: 2-wire, dial-up or leased line
Operation: full-duplex
Line coupling: 600 ohms impedance Transformer-coupled; transient protected
Transmit level: Permissive (? 9 dBm) Programmable (0 to ? 15 dBm)
Receiver dynamic range:
2400, 1200 bps: ? 45 dB ? 4 dB 0-300 bps: -50 dB ?4 dB

MODULATION
2400 bps Modulation protocol: CCITT V.22 bis
Technique: Quadrature Amplitude Modulation (QAM)’
Carrier frequencies:
Originate 1200 Hz ? 0.01%
Answer 2400 Hz ? 0.01%
1200 bps Modulation protocol: CCITT V.22 or Bell 212A (configurable)
Technique: Phase shift keying (PSK)
Carrier frequencies:
Originate 1200 Hz ?0.01%
Answer 2400 Hz ? 0.01%
300 bps Modulation protocol: Bell 103A Technique: Frequency shift keying (FSK)
Carrier frequencies:
Originate Answer
Mark 1270 Hz ? 0.5% 2025 Hz ? 0.01%
Space 1070 Hz ? 0.5% 2025 Hz ? 0.01%

AUTOMATIC CALL UNIT

Pulse Dialer Pulse rate: 10 pps ? 0.5 pps
Pulse period: Make + Break = 100 ms, ? 5 ms
Break interval: 61% ? 3%, U.S. setting 67% ? 3%, U.K. setting
Inter-digit time: 700 ms, ? 5 ms Transition chatter: < 3 ms duration
Tone Dialer Tone signaling: Dual-Tone Multi-Frequency (DTMF)
Tone duration: programmable in 100 ms increments, ? 5 ms 100 ms (default)
Inter-digit time: programmable in 1 ms increments, ? 5 ms from 50 to 255 ms 70 ms (default)
Signal level: each tone: ? 6 dBm ? 2 dB composite signal: 3dBm ?2dB