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cryptio
7.5.5
Other combinations of configuration:
Password dialback:
The configuration example "Switched line synchronous
encryption (automatic dial)" for switched line may be expanded
with a dialback function. This added configuration may be found
in the user manual describing asynchronous. encryption with
dialback.
More keys:
The modems may be configured with more than one data key,
thus increasing the security. More keys can be stored in both
modems and the password table - encryption field in the
answering modem should be changed to select indexes at
random.
=>Change "K=01-01" to "K=01-04" if 4 keys are used.
Manual dialbackup:
In the leased line example, the originating modem may be
configured for manual as well as automatic dialbackup.
=>Use the +&VD1
command.
When on-line in leased line, a manual dialbackup is performed
by pressing the LEAS/SW switch on the front and then the
VOICE/DIAL switch.
No dialbackup:
If no dialbackup switched line is used, the +J1 command should
be changed to +JO0.
Transmit clock:
The default transmit clock is CT 114. tf CT 113 is used, the &X1
command
must be issued.
"Note that when 113 clock is used, the modem demands
a Stable clock during connection. If 113 clock is not
present the connection will fail.
LZTR104006 R1.00
7-19
Zat 14.4/14.4-7 and 19.2/19.2-7
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