GAI-Tronics ACC2500 Audio Control Center - Manual (Page 39)

ACC2500 Audio Control Center CARD Suite Programming Software
35 09/08
Zone Address Length
The GAI-Tronics addressable speakers and broadcast devices use DTMF signaling for activation. The
addresses of these units should be programmed for the reception of the same number of address digits.
When a zone is to be activated, the proper number of address digits followed by a DTMF “#” are sent to
the zone. This number of digits or address length should be entered in the Max. Digits from Keypad. Note
that the ACC2500 appends the DTMF “#” to the end of the zone address.
Preamble Digits
If all zones in the system start with a particular sequence followed by unique digits for each zone or unit,
these digits can be entered in the Preamble Digits field. When a zone is then activated, the operator must
only enter the unique digits before pressing
TRANSMIT . The ACC2500 will first generate the Preamble
Digits followed by the digits entered by the operator. Note that if preamble digits are entered, the Zone
Address Length must be only the number of digits entered by the operator and not include the number of
digits in the preamble.
Zone Activation Duration
The GAI-Tronics addressable speakers and broadcast devices have an inactivity timer that keeps them
active in the absence of a contact closure or audio detection depending on the particular installation. To
coordinate this time with the ACC2500 and prevent generation of DTMF zone addresses when not
necessary the TALK NOW Time should be set to the same duration as that of the units. This duration is
in 5-second increments and will require that the field units be set to the same 5-second granularity. If set to
0, the ACC2500 will generate the DTMF ZONE address each time a zone is addressed. Note that this will
be the default activation time for any zone and can be overridden using preprogrammed zone aliases.
DTMF Digit Time
The duration of the DTMF digits used to activate a zone is controlled by the DTMF Interdigit Time.
Restrict Entry of Manual Zones
By default, the operator can select any numerical zone using the numeric keypad. To restrict manual
selection of a zone disable Allow Manual Paging.
Restrict DTMF Over Dial
By default, the operator can over dial DTMF when a zone is active. To restrict over dialing of DTMF
when a zone is active disable Allow Immediate DTMF Paging.
Preprogrammed Zone/Alarm Aliases
The ACC2500 supports preprogrammed aliases for zones or zones plus alarms using the Alias Table of the
IPE2500. These allow the operator to select a zone or zone and alarm using names instead of numerical
zone number and message numbers. They can also be used to restrict, along with restriction of manual
zones and DTMF over dial, what the operator may activate or broadcast in the system.
Preprogrammed Zone / No Alarm
To preprogram a zone to allow the operator to select a zone via name, press the Add Alias button on the
Alias Tables tab. Enter up to an 8-character alphanumeric name under Alias Name and press the enter key
on the computer keyboard. Under Paging Type, select DTMF. Under Talk Time, enter the desired
activation duration for the zone being programmed. If set to zero, the previously described zone activation
duration will be used. If longer than the zone activation duration, this duration will be used.