Appendix A. AT Commands and
Command | Function |
A | Answer. Places the Express XR/XRT in answer mode. |
AT!S | Displays Status Buffer. |
AT!S1 | Displays Link Status |
AT!V | Configuration Menu. |
AT!Z | Detect a modem connected to the Express XRT. |
DDial. Precedes the telephone access number [ATD5551212].
H | Hang up. Disconnects the current call. |
I0 | Identify unit. Commands the unit to display model |
| number. |
I1 | Identify software. Commands the unit to display |
| software version. |
O | |
S | S Register. |
SS | S String register. |
Z | Reset. Resets the AT command processor. |
&W | Save. Save current configuration to EEPROM. |
+++Break in. Break in AT command processor during an active call. The break in key is defined in S2.
Carrier Detect (CD) Control Line Options
&C0 | CD forced on. |
&C1 | CD normal. |
&C2 | CD off with local disconnect (LOCD). |
&C3 | CD off with link down. |
Data Terminal Ready (DTR Control Line Options) | |
&D0 | Ignore DTR. |
&D1 | DTR off forces command. |
&D2 | Idle when off. DTR off forces idle (On allows auto |
| answer). |
54 | Express XR/XRT Quick Start Guide |
