Appendix A. AT Commands and S-Registers

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

_S3

NEC

_S4

Euro ISDN

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 Ex-

 

press XRT modem port.

_L1

Enable external analog modem connected to the Ex-

 

press XRT modem port.

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ADTRAN Express XRT manual AT Command Response Message Types