Intel MD566X - Manual (Page 42)

56K V.92 Data, Fax, and Voice Chipset
42 Intel Confidential Programmer’s Guide
Bn 1
Select ITU-T or Bell
∗
: This command selects the ITU-T or Bell configuration
for the modem.
n = 0 Selects ITU-T V.22 when the modem is at 1200 bps and ITU-T V.21
when the modem is at 300 bps.
n = 1** Selects Bell 212A when the modem is at 1200 bps and Bell 103J
when the modem is at 300 bps.
n = 2 Selects ITU-T V.23 modulation connections only (that is, the mo-
dem does not connect for any other speed or modulation). The orig-
inating modem transmits at 75 bps (and receives at 1200 bps), and
the answering modem transmits at 1200 bps (and receives at 75
bps).
n = 3 Selects ITU-T V.23 modulation connections only (that is, the mo-
dem does not connect for any other speed or modulation). The orig-
inating modem transmits at 1200 bps (and receives at 75 bps), and
the answering modem transmits at 75 bps (and receives at
1200 bps).
Cn 1
Carrier Control Option: This command is reserved for selecting between
controlled carrier or constant carrier modes. This modem supports only con-
stant carrier mode.
n = 0 Transmit carrier always off (returns an ERROR message)
n = 1** Normal transmit carrier (constant carrier)
Table 3-4. Data Mode Command Descriptions (Continued)