Chapter 2 - Intercom Port Connections; General Information; Logical Keypanel Numbers - RTS KP-12 System Installation Manual

CHAPTER 2
Intercom Port Connections

General Information

Typically, devices are connected to individual intercom ports using Station Breakout Panels as shown in the in the drawings
starting on page 33. Depending on the type of breakout panels being used, the individual intercom stations will utilize either
RJ-11 modular style intercom cables, or 9-pin D-sub cables. Wiring diagrams for both are shown in the Figure 22, "Intercom
Station Cables," on page 54.
Each intercom port supplies two pins for audio input, two for audio output, and two for data. All audio connections are
balanced, dry lines. All audio inputs and outputs are set for unity gain by default: whatever level is applied at an input will be
supplied at the output. Input and output levels may be adjusted for individual ports, if required. This may be accomplished
either from AZedit or from individual keypanels.
Various types of intercom stations are generally connected to the intercom ports, but other types of audio devices could also be
connected. For example, a program source could be connected to the audio input for an intercom port, and in this case the
audio output pins are available for other functions.
The data wires for an intercom port are used to send and receive control information between the connected device and the
ADAM AIO card. The data wires are only used by keypanels, by the TIF (Telephone Interface), and by CDP-950 Camera
Delegate Panel. The type of data transmitted includes key press information and display information. For example, when a key
is pressed on a keypanel, this information is sent on the data wires to the ADAM frame. The AIO card talks to the Master
Controller, the ADAM frame then makes the necessary talk and listen connections so that a conversation can take place. It also
sends data to the device being called; for example, to display the caller's name at a keypanel, or to activate a telephone line at
a TIF interface.

Logical Keypanel Numbers

Even though separate data pins are provided for each intercom port, these pins do not actually represent a unique data port.
Rather, groups of intercom ports share a common data port. In an ADAM intercom system, data groups consist of 8 intercom
ports, and each Audio Input/Output card represents 1 data group. To distinguish between devices connected to the same data
group, a "Logical Keypanel Number" (1 through 8) is assigned to each device at the time of connection. The relationship
between intercom port numbers, Audio I/O Cards and Logical Keypanel Numbers is shown in Table 3 on page 13. Specific
information about setting Logical Keypanel Numbers is discussed further in the installation notes on the following pages.
NOTE: AIO-16 Cards consist of 16 ports per card, double the number of ports the AIO card contains. Also, the AIO-16 is a
"smart card", which means when it is inserted into an ADAM frame, it automatically figures the back card configuration and
protocols being used. The AIO-16, unlike the AIO-8, is not constrained by logical keypanel numbers or addresses completely,
because each port has its own data driver.
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