User's Manual
V34bis Fax-modem - AJ 2885 P
AJ 2885 P - Page 35
Boucle 3
AT&T1 <RC>........................................ start the test
CONNECT 19200 ................................ Connect message
ABCDE................................................. characters sent by the terminal
+++....................................................... escape to command mode
OK
AT&T0 .................................................. End of test command
♦
Note: the connection status ( AT&s8 ) page can be displayed during the test after an
escape to command mode.
♦
B 2 : remote digital loop
: modems are connected before starting the test.. the remote
loop on the B modem is initiated from the A modem by the following commands :
♦
AT&T6 : simple loop. The A terminal checks returned characters. The connection must be
done without any error correction protocol ( AT*M1 )
♦
AT&T7 : same loop with automatic character sending and checking by the A modem. It
displays the error counter at the end of test. The connection must be done without any
error correction protocol ( AT*M1 )
♦
End of test : the test ends at the test timeout defined by the S18 register, or by entering an
escape sequence ( '+++' ) and an AT&T0 command.
♦
Front panel LED: on the B modem, the DSR led flashes and the CTS signal is dropped
during the test.
♦
Example :
A
A
B
B
Connection at 19200bps
B 2
+++
OK ......................................................... escape to local command mode on
modem A
AT&T6
OK ......................................................... requests a remote digital loop to B
modem
ABCDE .................................................. characters issued by the A terminal are
sent back by the B modem
+++
OK
AT&T0 ................................................... End of test
OK
ATO ....................................................... Return to connected mode and
reactivate the data link between the A
and B terminals.
