Ositech comm Trumpcard Data/Fax Modem - Manual (Page 57)

User’s Guide and Reference 4 - 25
Modem Command Reference
AT&T6 Initiates remote digital loopback. The characters
received from the local communications software
are transmitted to the remote modem and looped
back from the remote modem to the local modem.
This test verifies the working condition of the path
between the local communications software and the
remote modem.
AT&T7 Initiates remote digital loopback with self test. This
works similarly to &T6 except that the modem sends
an alternating zeros and ones (0101) test pattern to
the remote modem and continuously examines the
validity of the returned data. The modem increments
an internal error counter each time an error is
detected. At the end of the test, the modem returns a
3-digit error count.
AT&T8 Initiates local analog loopback with self test. This
test works similarly to &T7 except that the test
pattern is checked in the local analog loopback
mode (as in &T1). This allows a thorough testing of
the local modem transmit and receive functions
without an actual telco line connection.
&V — View Configuration and User Profiles
Parameters none
Default none
Displays the active configuration and user profiles.
Example
AT&V
ACTIVE PROFILE:
B1 E1 L2 M1 N1 Q0 T V1 W0 X4 Y0 &C0 &D0 &G0 &J0 &K3 &Q5
&R0 &S0 &T4 &X0 &Y0
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002
S07:030 S08:002 S09:006 S10:014 S11:095 S12:050 S18:000
S25:005 S26:001 S36:007 S37:000 S38:020 S44:020 S46:138
S48:007 S49:008 S95:000
STORED PROFILE 0:
B1 E1 L2 M1 N1 V1 W0 X4 Y0 &C0 &D0 &G0 &J0 &K3 &Q5 &R0
&S0 &T4 &X0
S00:000 S02:043 S06:002 S07:030 S08:002 S09:006 S10:014
S11:095 S12:050 S18:000 S36:005 S37:000 S40:105 S41:135
S46:138 S95:000