Epson ESC/VP21 User Manual page 22

&Tn Testing and Diagnostics (See Chapter 4)
This command is used 10 initiate and terminate loopback tests for testing modem-to-
modem and DTE-to-modem data communication integrity.
&T0
&T1
&T3
&T4
&T5
&T6
&T7
&T8
&U Disable Trellis coding
This command selects whether the modem will transmit and receive modulated
9600 bps carrier with QAM or Trellis encoding for V.32.
Range: n = 0-1
&U0
&U1
&Vn View Active Configuration and Stored Profiles
This command causes the modem to send command and S-register configuration
information to the DTE for the following: the active user profile, and one of two
stored user profiles.
14
Terminates test in progress. (default)
Local analog Ioopback.
Local digital Ioopback.
Grants RDL request from remote modem.
Denies RDL request from remote modem.
Remote digital Ioopback.
Remote digital Ioopback with self-test.
Local analog Ioopback with self-test.
Enabled. (Trellis modulation with QAM
modulation as a fallback) (default)
Disabled. (QAM modulation only)
COMMAND REFERENCE - 2