APPENDIX A

A-2
User's Manual
Built-in Modem
Network control unit (NCU)
Type of NCU AA
Type of line Telephone line (analog only)
Type of dialing Pulse
Tone
Control command AT commands
EIA-578 commands
Monitor function Computer’s speaker
Communication specifications
Communication Data: Full duplex
system Fax: Half duplex
Communication Data
protocol ITU-T-Rec V.21/V.22/V.22bis/V.32
(Former CCITT) /V.32bis/V.34/V.90
Bell 103/212A
FaxITU-T-Rec V.17/V.29/V.27ter
(Former CCITT) /V.21 ch2
Communication Data transmission and reception
speed 300/1200/2400/4800/7200/9600/12000/14400/
16800/19200/21600/24000/26400/28800/31200/
33600 bps
Data reception only with V.90
28000/29333/30666/32000/33333/34666/36000/37333/
38666/40000/41333/42666/44000/45333/46666/48000/
49333/50666/52000/53333/54666/56000 bps
Fax2400/4800/7200/9600/12000/14400 bps
Transmitting level -10 dBm
Receiving level -10 to -40 dBm
Input/output 600 ohms ±30%
impedance
Error correcting MNP class 4 and ITU-T V.42
Data compression MNP class 5 and ITU-T V.42bis
Power supply +3.3V (supplied by computer)