Toshiba PT930 User Manual page 201

Transmitting level
Receiving level
Input/output
impedance
Error correcting
Data compression
Power supply
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-10 dBm
-10 to -40 dBm
600 ohms ±30%
MNP class 4 and ITU-T V.42
MNP class 5 and ITU-T V.42bis
+3.3V (supplied by computer)
Appendix A
A-3