Specifications

Alto 818 Installation and Operation
6-22 P/N 66109074001 Rev. D
This field is used to set up the building ID messages that the Alto 818 will use for identification
purposes when communicating with a remote terminal by means of a smart modem. Three
messages are possible. Each ID message must be no longer than 72 characters (including
spaces). Enter messages and press Enter. The screen displays:
2. TELEPHONE (24):
?
2. This field is used to set up the host phone numbers. Phone numbers of no more than 24
numbers (including spaces) are possible. Two additional lines allow a total of three phone
numbers to be entered. The system will make attempts to call the host, trying the given
numbers sequentially. If only one remote location is to be dialed, enter its number three
times. Make the desired entries and press Enter. The screen displays:
3. TRY CALLING (1-10): 1?
3. Type the number of times, from 1 to 10, that the Alto 818 should attempt to dial the three
numbers entered in field 2 and press Enter. The screen displays:
4. CALL BACK (Y/N): Y?
4. The CALL BACK function is used to protect the system from break-ins via the telephone
lines. If the CALL BACK function is enabled, when anyone dials the Alto 818 telephone
number, the ACU will not maintain the connection. Instead, it will hang up and then dial out
to the numbers entered in field 2. Thus anyone attempting to access the system via the
phone lines from any source except the intended remote location will be disconnected. And,
since the remote location phone numbers exist only as listed numbers in the ACU database,
these numbers are not available to anyone except rank A system operators through the use
of the PRINT MODEM command.
The default is Y; type N to disable the call-back feature. Press Enter. The command prompt
is displayed.
1. BLDG ID (72):
?
?
?
2. TELEPHONE (24):
?
?
?
3. TRY CALLING (1-10): 1?
4. CALL BACK (Y/N): Y?
Figure 6-8: MODEM Command Prompts