ADTRAN XR Quick Start Manual page 68

Appendix A. AT Commands and S-Registers
Command Function
Local Echo Options
E0 Echo off. Does not allow command characters typed to
be displayed on the screen.
E1 Echo on. Allows the command characters typed to be
displayed on the screen.
AT Command Response Message Options
Q0 Response messages on
Q1 Response messages off
AT Command Response Message Types
V0 Numeric response messages
V1 Verbal response messages
AT Command Connect Message Options
X0 Simple connect message
X1-7 Connect messages with bit rate
Ready-To-Send (RTS) Control Line Options
_D0 1 mS delay
_D1 18 mS delay
ISDN Switch Type Options
_S0 5ESS
_S1 DMS-100
_S2 National ISDN-1
Data Flow Control Options
\Q0 No flow control
\Q1 Software flow control (XON/XOFF)
\Q2 CTS only
\Q3 Hardware flow control (RTS/CTS) factory default
\Q4 Software from DCE only
DTE and Modem Interface Selection
_L0 Disable external analog modem connected to the Express
XR/XRT modem port.
_L1 Enable external analog modem connected to the Express
XR/XRT modem port.
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Express XR/XRT Quick Start Guide 61200.153L1-13