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3 AT Commands, Result Codes, and S-Registers
MT5634ZPX-PCI 37
I4 Display firmware version for data pump (e.g., 94).
I9 Display country code (e.g., NA Ver. 1).
I11 Display Diagnostic Information for the last Modem
Connection (i.e., DSP and Firmware version, Link Type,
Line Speed, Serial Speed, Type of Error Correction/Data
Compression, Number of past Retrains,etc.)
Command: Ln Monitor Speaker Volume
Values: n = 0, 1, 2, or 3
Default: 2
Description: L0 Select low volume.
L1 Select low volume.
L2 Select medium volume.
L3 Select high volume.
Command: Mn Monitor Speaker Mode
Values: n = 0, 1, 2, or 3
Default: 1
Description: M0 Speaker always off.
M1 Speaker on until carrier signal detected.
M2 Speaker always on when modem is off-hook.
M3 Speaker on until carrier is detected, except while dialing.
Command: Nn Modulation Handshake
Values: n = 0 or 1
Default: 1
Description: N0 Modem performs handshake only at communication
standard specified by S37 and the B command.
N1 Modem begins handshake at communication standard
specified by S37 and the B command. During handshake,
fallback to a lower speed can occur.
Command: O Return Online to Data Mode
Values: 0, 1, 3
Default: None
Description: O0 Exit online command mode and return to data mode.
O1 Issue a retrain and return to online data mode.
O3 Issue a rate renegotiation and return to data mode.