Maxim Integrated 73M2901CE AT Command - Manual (Page 20)

73M2901CE AT Command User Guide UG_2901CE_027
20 Rev. 2.0
3.5 @T[n] – Select Test Mode
n = 0, 1, 3 to 8
@T0
Terminate any test in progress. The @T command must be the last in the command line.
@T1
Initiate a Local Analog Loopback Test (ITU V.54 Loop 3).
@T3
Initiate a Local Digital Loopback test.
@T4
Instructs the modem to grant a request from the remote modem for a Remote Digital Loopback test.
@T5
Instructs the modem to deny a request from the remote modem for a Remote Digital Loopback test.
@T6
Initiate a Remote Digital Loopback test (ITU V.54 Loop 2).
@T7
Initiate a Remote Digital Loopback self-test (ITU V.54 Loop 2).
@T8
Initiate a Local Analog Loopback self-test (ITU V.54 Loop 3).
3.6 @Z Power Down
Allows the part to go into deep power down mode. All commands following the @Z command are ignored,
therefore it is advisable that the @Z command be at the end of a command line.