Black Box 3600 MODEM manual Eprom Check, Speaker Volume L, Speaker Control M

AT Commands

EPROM Check I

PC software packages may issue the I command to verify the modem will support all commands needed by the software package. The modem returns ASCII characters representing the model and revision level. To request the checksum to be calculated on the EPROM, enter the I1 command. The modem returns four ASCII characters representing the cyclic redundancy check (CRC) in hexadecimal form. Enter the I3 command to request the product version.

Command	Operation
I	Request product code
I1	Request EPROM checksum value
I3	Request product version
I4	Returns Motorola V.3600
I5	Last disconnect reason

Speaker Volume L

The L commands offer three volume levels.

Command	Operation
L, L1, L2	Speaker volume low
L3	Speaker volume high

Speaker Control M

The M commands enable or disable the speaker for monitoring purposes.

Command	Operation
M	Disables the speaker
M1	Disables the speaker while receiving a carrier signal
M2	Speaker always on
M3	Disables the speaker while dialing and after a
	carrier is detected

5-24 Modem 3600