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128
Carrier Frequencies
Transmit originate: 1270 Hz mark
Bell 103/113
1070 Hz space
(0–300 bps)
Receive originate: 2225 Hz mark
2025 Hz space
Transmit answer: 2225 Hz mark
2025 Hz space
Receive answer: 1270 Hz mark
1070 Hz space
Fax Carrier
V.21 Ch2 (half duplex):
Frequencies
1650 Hz mark, 1850 HZ space for transmit
originate
1650 HZ mark, 1850 Hz space for transmit
answer
V.27ter: 1800 Hz originate/answer
V.29 QAM: 1800 Hz originate/answer
V.17 TCM: 1800 Hz originate/answer
Voice Compression
PCM 128, 8000 Hz, or IMA ADPCM, 8000 Hz,
and Sampling Rate
(selectable via +V commands).
Note that your
(MT5634ZBAV only) computer system should have a processing
speed of at least 75 MHz to take full advan-
tage of the telephony features of this product.
Transmit Level
-11 dBm (dial-up)
Frequency Stability
±0.01%
Receiver Sensitivity
-43 dBm under worst-case conditions
AGC Dynamic Range
43 dB
Interface
EIA RS-232C/ITU-T V.24/V.28
Connectors
DB25 RS-232C connector; two RJ-11 phone
jacks (one RJ-11 jack on UK and international
modems), power jack; 1/8-inch stereo speaker
jack and microphone jack on ZBAV model.