Power Requirements
AC adaptor
Computer
Built-in Modem
Network control unit (NCU)
Type of NCU
Type of line
Type of dialing
Control command
Monitor function
Communication specifications
Communication
system
Communication
protocol
Communication
speed
TECRA M4
100–240 volts AC
50 or 60 hertz (cycles per second)
15 VDC
5 amperes
AA
Telephone line (analog only)
Pulse
Tone
AT commands
EIA-578 commands
Computer's speaker
Data:
Full duplex
Fax:
Half duplex
Data
ITU-T-Rec
(Former CCITT)
Bell
Fax
ITU-T-Rec
(Former CCITT)
Data transmission and reception
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
Specifications
V.21/V.22/V.22bis/V.32
/V.32bis/V.34/V.90
103/212A
V.17/V.29/V.27ter
/V.21 ch2
A-2