A-A-52317A
2.3.10 Operation on ac power failure. Upon loss of ac power, the DCC shall immediately operate from battery power. Loss or subsequent restoral of ac power shall not cause a false alarm. The DCC shall, if programmed, initiate a report of the loss of ac power to the phone number(s) dialed (see 2.3.12) not less than 30 seconds nor more than 40 minutes after ac power loss occurs. No report shall be sent if power is restored prior to transmittal of the report. The keypad shall indicate loss of ac power not more than 120 seconds after ac power loss.
2.3.11 Low battery indications. When the DCC is operating from standby power, the battery voltage shall be monitored, and a report indicating a low battery shall be transmitted before the DCC becomes unable to perform its functions. When the DCC is operating from ac power, the DCC shall check the battery condition under load at least daily and shall transmit a low battery signal if the battery would be unable to properly perform its standby function. A low battery indication shall also be made at the keypad.
2.3.12 Dialing modes. The DCC shall be programmable to transmit reports of changes at its zone inputs, system status changes and user operations to at least two telephone numbers. As a minimum, the DCC shall provide the following dialing mode options:
a. transmit reports to the primary phone number; if the transmission attempt to this number is unsuccessful after a preset or programmed number of dialing attempts, transmit to a second number (back-up reporting);
b. transmit reports to the primary number, then to the secondary number (dual reporting). In this mode and in mode a. the DCC may alternate dialing between the two numbers after one or two unsuccessful attempts to the alternate number;
c. transmit zone change reports only to the primary phone number and all reports (including zone change reports) to the secondary phone number.
If attempts to report are unsuccessful, a total of at least 8 attempts shall be made per phone number before dialing attempts are discontinued. An indication of the communications failure shall then be made at the keypad.
2.3.13 Programming. The DCC shall be fully programmable in the field with the same keypad used for system control (see 2.3.22). Programming with the keypad shall require entry of a programmable four, or greater, digit code (installer code). It shall also be possible to download and upload program data and to perform primary user control functions from a remote location. The DCC shall incorporate an optional download/upload callback technique. When programmed for this option, after receiving an initial call from a remote location requesting downloading/uploading, the DCC shall be required to call a preprogrammed phone number from which the downloading/uploading can proceed.
2.3.14 User operations. To perform arming, disarming and other system functions, it shall be necessary to enter a four or more digit code (user code). At least 32 user codes shall be
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