Multitech MULTI MODEM II MT5600BA - Manual (Page 51)

4 AT Commands, S-Registers, and Result Codes
45
MultiModemII User Guide
x_law An optional number that specifies the PCM code type
for 56K modulation. The options are:
0 = µ-Law—used in North America and Japan (default)
1 = A-Law—used outside North America and Japan
The modem automatically selects A-Law or µ-Law if the server
sends the Conexant ID. Note that the ATZ command restores
the x_law value from NVRAM. You can also manually select
A-Law or µ-Law using the %U command.
reserved Must not be changed from the default value of 0.
max_TX_rate An optional number that specifies the highest
rate at which the modem may establish a transmit connection.
The value is decimal coded in units of bps, e.g., 33600 specifies
the highest rate to be 33600 bps. See “Possible rates” in the mod
table. The default is 33600, for 33600 bps.
Command: -K n MNP Extended Services
Values: n = 0, 1, or 2
Default: 0
Description: Enables or disables conversion of a V.42 LAPM connection to
an MNP 10 connection.
-K0 Disables V.42 LAPM to MNP 10 conversion.
-K1 Enables V.42 LAPM to MNP 10 conversion.
-K2 Enables V.42 LAPM to MNP 10 conversion; inhibits MNP
Extended Services initiation during V.42 LAPM answer mode
detection phase.
Command: -SDR=n Distinctive Ring Control
Values:
0–7
Default: 0
Description: This command enables or disables detection and reporting of
distinctive ring. One, two, or three distinctive ring types can be
simultaneously enabled depending upon the value of n. The
detected ring type is reported in the verbose result code by ap-
pending the ring type number to the end of the RING message.
-SDR=0 Disables distinctive ring. Any valid ring detected is reported as
RING.
-SDR=1 Enables distinctive ring type 1.
-SDR=2 Enables distinctive ring type 2.
-SDR=3 Enables distinctive ring types 1 and 2.
-SDR=4 Enables distinctive ring type 3.
-SDR=5 Enables distinctive ring types 1 and 3.
-SDR=6 Enables distinctive ring types 2 and 3.
-SDR=7 Enables distinctive ring types 1, 2, and 3.
The supported ring types and ring cadence detection criteria
are shown in the following table:
Distinctive
ring type
1
2
3
Ring cadence detection criteria
2.0 sec. on, 4.0 sec. off
0.8 sec. on, 0.4 sec. off, 0.8 sec. on, 0.4 sec. off
0.4 sec. on, 0.2 sec. off, 0.4 sec. on, 0.2 sec. off, 0.8 sec. on, 0.4 sec. off