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A - 6
MC909X User Guide
Modem Module
Environmental Parameters and Technical Hardware Specifications
Table A-3
Item
Asynchronous character
format
Asynchronous data rates
Chipset
Compatible public switched
network jacks
Dialing capability
Line requirements
Operating environment
Operating temperature
Operating modes
Performance
Current consumption
Pulse dialing rate
(except where prohibited
under TBR-21 rules)
Ringer equivalence
Standards & protocols
Tone detected
AC Adapter
Up to 10 bits, including data, start, stop, and parity bits
Transmission rate fallback through 300 bps
Conexant SCM
RJ11
Tone and rotary pulse
Public switched telephone network (PSTN) including international
connections
Altitude: up to 20,000 ft.
Humidity: 10% to 90% non-condensing
o
o
Operating: 32
to 122
F / 0
o
o
o
Storage: -4
to 149
F / -20
Asynchronous, full duplex, automatic and manual call originate
Line speed up to 33,600 bps
HHC to modem speed (DTE speed) up to 57,600 bps
V.42bis data compression
V.42 LAPM error correction
100 mA active
<10 mA sleep
10 pulses per second
Pulse dialing duty cycle: 39/61% (US) make-to-break ratio
0.1 dBm
Bell 103, Bell 212A, Hayes AT command set, and ITU Vs. 17, 21, 22 A & B,
22bis, 23, 25bis, 27 ter, 29, 32, 32bis, 42bis
Dial, busy, ring back, modem answer tones.
Blind dialing based on time-out periods available for incompatible tones.
9V, 2 amp regulated AC/DC adapter allows unlimited modem use. Do NOT
substitute an AC adapter; using an incorrect AC power supply causes
electrical damage to the mobile computer and voids warranty.
Description
o
o
to 50
C
o
to 65
C
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