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APPENDIX A
User's Manual
Computer 15 VDC
5.0 amperes
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
Fax
ITU-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
Fax
2400/4800/7200/9600/12000/14400 bps
Error correcting MNP class 4 and ITU-T V.42
Data compression MNP class 5 and ITU-T V.42bis