Maxim Integrated 73M2901CE AT Command - Manual (Page 18)

73M2901CE AT Command User Guide UG_2901CE_027
18 Rev. 2.0
Result Code 5 = CONNECT 1200
Result Code 6 = NO DIALTONE
Result Code 7 = BUSY
Result Code 8 = NO ANSWER (if @ dial modifier is used and quiet answer is not detected within S7)
Result Code 9 = CONNECT 0600
Result Code 10 = CONNECT 2400
Result Code 11 = CONNECT 4800
Result Code 12 = CONNECT 9600
Result Code 13 = CONNECT 7200
Result Code 14 = LINE-IN-USE
Result Code 22 = CONNECT 75/1200
Result Code 23 = CONNECT 1200/75
If X0, X1, X3, X5 or X7 modes are enabled, the modem will delay a number of seconds (determined by the
value of register S6), not check for a dial tone, and then dial.
The @ and W dial modifier result codes are not affected by the Xn command in effect. The @ dial modifier
enables result codes 8 (NO ANSWER) and 7 (BUSY) each time it occurs in the dial string. The W dial
modifier enables result codes 6 (NO DIALTONE) and 7 (BUSY) each time it occurs in the dial string.
2.24 Y[n] – Selects Asynchronous or Synchronous Modes
n = 0 to 6 (default = 6)
Y0
Asynchronous mode. No speed buffering, no protocol.
Y1
Synchronous mode. No speed buffering, no protocol.
Y4
Quasi-Synchronous mode. Allows the transmission and reception of sync data through an
asynchronous DTE by stripping off start and stop bits on transmission and adding them on reception.
Y6 Asynchronous with speed buffering. Allows fixed DTE-DCE speed so applications do not need to
change the communications rate based on connection results. (Default) Must be used with flow
control (K3 or K4), which is not ON by default.
2.25 Z – Reset Modem
The Z command resets the modem. The Z command is equivalent to a power cycle.
2.26 +++
During a data connection, the escape command (+++) returns you to TIES Command State without
terminating the data connection so you can enter AT commands. When in TIES Command State, all the
AT commands given to the modem will be seen by the remote modem as data. If a valid AT command is
not sent or if data is sent to the modem instead of AT commands while in this mode, the modem will
return to data mode.
2.27 +++AT
During a data connection, the escape command (+++AT ) returns you to Command State
without terminating the data connection so you can enter AT commands.