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C H A P T E R
4 :
G E T T I N G
F R A M E W O R K
Figure 4.1: POTS Telephony board end bracket
Note:
On the end bracket of the POTS telephony interface board, the
following connectors are currently not used: E&M power supply,
Audio Input and Local Phone Connector.
Note:
Be careful not to mix up the POTS telephony boards audio input
and output with the optional high quality sound board that is used
for data acquisition..
Since both ports of OPERA provide two POTS interfaces each, the splitter cables
shown in
Figure 4.2
cables to the POTS telephony interface board as illustrated in
There are three labels on the adapter: "0(2)", "1(3)" and "PC". The "PC"
connector side must be connected to the telephony board. Depending on the
port of the telephony board, the adapter connectors labelled with "0(2)" or
"1(3)" represent either line 0 and line 1, or line 2 and line 3.
T O
K N O W
are used to split up the signals and connect two RJ11
31
T H E
O P E R A ™
Figure 4.3
below.
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