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PCB Installation
RCOU3A, RCOS3A – Four-Circuit Loop Start CO Line Interface Unit
Strata CTX I&M 06/04 6-23
PCB Installation
Table 6-10 RCOS3A Controls, Indicators, and Connectors
Control/Indicator/
Connector
Type of Component Description
CO line circuit 5~8 indicators Red LED
Lights to indicate that line circuit is in operation.
(CO line indicator will not light unless RCOU is
connected to a CO line).
J3 connector Modular connector Interface connector for CO line circuits 5 and 6.
J4 connector Modular connector Interface connector for CO line circuits 7 and 8.
Pad switch SW501 (circuit 5)
2-position slide switch
Enables -3dB signal level drop for CO line
circuit.
Pad switch SW601 (circuit 6)
Pad switch SW701 (circuit 7)
Pad switch SW801 (circuit8)
RCOU3A connector J11, J12,
J13, J14
11-pin female connector
Interface connector for RCOU3A. RCOS3A can
be connected with RCOU3A and RCOU1A.
Mu Law/A Law jumper plug
P2
(RCOS3A only)
3-terminal jumper
No jumper plug is the default for the U.S. and
Canada. For countries requiring A Law, insert
the jumper plug (provided in the PCB box) on
the A Law side.
Table 6-11 RCOS1A Controls, Indicators, and Connectors
Control/Indicator/
Connector
Type of Component Description
CO line circuit 5~8 indicators Red LED
Lights to indicate that line circuit is in operation.
(CO line indicator will not light unless RCOU is
connected to a CO line).
J3 connector Modular connector Interface connector for CO line circuits 5 and 6.
J4 connector Modular connector Interface connector for CO line circuits 7 and 8.
Pad switch SW501 (circuit 1)
2-position slide switch
Enables -3dB signal level drop for CO line
circuit.
Pad switch SW601 (circuit 2)
Pad switch SW701 (circuit 3)
Pad switch SW801 (circuit 4)
RCOU connector J11, J12,
J13, J14
Female connector
Interface connector for RCOU 4-circuit loop
start CO line unit.