Fax Compatibility
-----------------
* Group 3 only
Data Format
-----------
The data format to use is determined by the software application.
* Protocol: serial, binary, asynchronous
* Parity: odd, even, mark, space, or no parity
* Character length:
* 7 data bits, 1 parity bit (even, odd, mark, or space parity), and
1 stop bit
* 7 data bits, no parity, 2 stop bits
* 8 data bits, no parity, and 1 stop bit
Frequency Tolerance
-------------------
* Offset frequency: +/-7 Hz
Data Transmission Modes
-----------------------
* Full duplex
* Asynchronous
Fax Transmission Modes
----------------------
* Half duplex
Compatibility and Modulation
----------------------------
* Full duplex (data communication standards)
Speed Standard Modulation
----- -------- ----------
300 bps Bell 103 FSK
1200 bps Bell 212A DPSK
1200 bps CCITT V.22 DPSK
2400 bps CCITT V.22bis QAM
* Half Duplex (fax communications standards)
Speed Standard
----- --------
2400-4800 bps CCITT V.27ter
7200-9600 bps CCITT V.29
Transmit Carrier Frequencies
----------------------------
* V.22bis, V.22, Bell 212A Transmit Carrier
Originate 1200 Hz
Answer 2400 Hz
* Bell 103 Mark Space
Originate 1270 1070
Answer 2225 2025
* V.21 Mark Space
Originate 980 1180
Answer & Fax 1650 1850
* V.29 Carrier 1700 Hz
* V.27 Carrier 1800 Hz
Guard Tone Frequencies and Transmit Levels (CCITT only)
-------------------------------------------------------
* 1800 Hz +/-20 Hz 6 +/-dB below the transmit carrier level
* 550 Hz +/-20 Hz 3 +/-dB below the transmit carrier level
Answer Tone Frequency
---------------------
* V.22bis, V.22, V.21, and fax 2100 Hz
* Bell 103, Bell 212A 2225 Hz
Received Signal Frequency Tolerance
-----------------------------------
* Offset frequency: +/-7 Hz
Calling Tone
------------
* Fax-specific calling tone: 1100 Hz (0.5s on, 3s off with 15% tolerance)
V.42bis and MNP Features
------------------------
* V.42bis and MNP protocols for error correction and data compression apply
to V.22, Bell 212, and V.22bis
Error Control
-------------
* MNP Classes 2 to 4
* CCITT V.42
Data Compression
----------------
* MNP Class 5
* CCITT V.42bis
These protocols apply to V.22, V.22bis, and Bell 212 (if available in your
country)
Features
--------
* Auto-dial and auto/manual answer
* Dual-tone multifrequency (DTMF)/pulse dialing
* Extended AT command set
* Low-power design to help preserve Macintosh PowerBook battery power
Operating Environment
---------------------
* Ambient temperature: 38 to 125 degrees F (5 to 65 degrees C)
* Relative humidity: up to 95% (non-condensing)
* Optimal humidity range: 0 to 75%
Power Requirements
------------------
* +5V +/-5% supplied by Macintosh PowerBook
* -5V +/-5% supplied by Macintosh PowerBook
Power Consumption
-----------------
* Operational mode: 750 mW typical
* Macintosh PowerBook sleep state: 0 mW
Electrical Requirements
-----------------------
* Line voltage: 110 to 220 volts
* Frequency: 50 to 60 Hz
Physical Characteristics
------------------------
* Board for internal installation with one mini-DIN connector and external
RJ11 jack
* Modem size: 96x36 mm
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