Ericsson ZAT 19.2 Operation Manual page 191

asswordidialback
6.9.2 Dialback with use of second switched line
The default value of +S register 2 is 90 seconds. This is to make
sure that the switched line really is disconnected. (A public
switch will normally disconnect the call within 90 seconds) after
the message DISCONNECT - REMOTE MODEM WILL DIAL
BACK is given. However, if you dialback on a second switched
line, this is of course disconnected. You may dialback at once
(minimum 5 sec.) without risking any «hacker» to keep the line
and simulate an answer.
As a second switched line you may use the bell connector which
normally is used for leased line (called «LEASED», «LEA» or
«TX»).
To use the second switched line, you have to make sure jumper
field J16 is set-up for this function (See chapter 5 «Strapping»).
and the phone number should include the dial modifier >.
Example:
= Enter the following password:
AT+P=SYSOP:>T37011555¢%
6.9.3. Password/Dialback Mode 2 - Open System
This function is activated by entering :
AT+PO2¢¢a]
Modem answers OK
Command is accepted.
If modem answer ERROR: It is not possible to use this
command if synchronous mode (&M command ) or direct mode
(\N1 command) is selected. Set asynchronous mode (&MO) and
turn off direct mode (i.e. \NO,\N2 or \N3).
"When this configuration is set it can only be reset by the
+POO0 command. The &F or Z commands will not reset it.
The command +PQ2 is based upon the password function.
STEP 2 and STEP 3 are the same for both functions:
LZTR104006 R1.00 6-13
Zal 14.4/14.4-7 and 19.2/19.2-7