Digi 90031300 Manual Do Utilizador
T1 Modem Bank
108
&S
n
Data Set Ready Option
Controls the functions of DSR. DSR indicates when the modem is connected to a communications channel
and is ready. Async mode only. If the modem is in Sync mode, DSR is on during handshake and when on-
line. DSR is off in test or idle mode.
and is ready. Async mode only. If the modem is in Sync mode, DSR is on during handshake and when on-
line. DSR is off in test or idle mode.
*
&S0
:
DSR always on.
&S1
:
DSR on during handshake and when on-line; off in test or idle modes.
Result Codes:
OK
Returned when
n
= 0 or 1.
ERROR
Returned for any other value of
n
.
&T
n
Self Test Commands
Used to configure and place the modem in various test modes as defined by CCITT V.54. These tests are
typically used to verify the analog and digital portions of a modem’s operation.
typically used to verify the analog and digital portions of a modem’s operation.
&T0
:
Terminate test.
&T1
:
Local analog loopback.
O: low frequency band.
A: high frequency band.
O: low frequency band.
A: high frequency band.
&T3
:
Local activate remote digital loopback (RDL).
*
&T4
:
Grant request from remote for RDL test.
&T5
:
Deny request from remote for RDL test.
&T6
:
Remote digital loopback test.
&T7
:
Remote digital loopback with self test.
&T8
:
Local analog loopback with self test.
Result Codes:
OK
Returned when
n
= 0, 3, 4, 5, 7 or 8.
CONNECT
Returned when
n
= 1 or 6.
ERROR
Returned for any other value of
n
.