ADTRAN Express 3010 Manual page 76

Appendix A. AT Commands and S-Registers
Data Set Ready (DSR) Control Line Options
&S0 DSR forced on
&S1 DSR if call up
&S2 DSR off if link down
&S3 DSR off if dial up
DTE Connector Data Synchronous Data Clocking Options
&X0 Internal transmit clock
&X1 External transmit clock
Accessing Stored numbers for Dialing Options*
&Z0 Stored number 0
&Z1 Stored number 1
&Z2 Stored number 2
&Z3 Stored number 3
&Z4 Stored number 4
&Z5 Stored number 5
&Z6 Stored number 6
&Z7 Stored number 7
&Z8 Stored number 8
&Z9 Stored number 9
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.
A-6 Express 3010/3110 User Manual 61200239L1-20