Ericsson ZAT 19.2 Operation Manual page 230

10.2 | Synchronous Mode 1
Synchronous Mode 1 is set by the command :
&M1 e| P a g a t The command musl be entered from an
4 asynchronous DTE. The modem remains in
"37 asynchronous command state until a connection
"lis established.
10.2.4 AT-command mode:
The modem ignores DTR OFF to ON transition and will
disconnect on DTR ON to OFF transition if the OFF condition
persists for a time set by S25 (in seconds ).
10.2.2 Calling
A call is made in asynchronous mode by means of the D -
command, as described under asynchronous mode. The modem
gives resultcodes as in asynchronous mode, and changes to
synchronous mode when a connection is established.
= Enter the dial command:
Wait until CTS (106) and DCD (109) is ON.
= Set DTE to synchronous operation or switch the V24 interface
to a synchronous DTE.
=Set DTR ON.
Transmission may start.
10.2.3 Synchronous Autoanswer:
=>dActivate the MAN/AUTO switch or set register SO to a non-
zero value.
=>Set DTR OFF.
Wait for RING indication ( V24. circuit RI/125)
The modem will go off-hook when sufficient number of RING is
received. (Ref. to SO)
Wait until CTS (106) and DCD (109) is ON.
=Set DTR ON.
=>Set DTE to synchronous operation or switch V24 interface to a
synchronous DTE.
Transmission may start. The autoanswer function is not
dependent of a DTR on level.
10-2 LZTR104006 R1.00
Zat 14.4/14.4-7 and 19.2/19.2-7