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Built-in Modem
This information is applicable to the models equipped with a 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 system Data: Full duplex
Fax: Half duplex
Communication
protocol
Data
ITU-T-Rec
(Former
CCITT)
V.21/V.22/V.22bis/V.32/V.
32bis/V.34/V.90
Bell 103/212A
Fax
ITU-T-Rec
(Former
CCITT)
V.17/V.29/V.27ter/V.21 ch2
User's Manual A-2