Toshiba CTX28 manual Lights to indicate that line circuit is in operation

PCB Installation

RCOU3A, RCOS3A – Four-Circuit Loop Start CO Line Interface Unit

Table 6-10 RCOS3A Controls, Indicators, and Connectors

Control/Indicator/	Type of Component	Description
Connector
		Lights to indicate that line circuit is in operation.
CO line circuit 5~8 indicators	Red LED	(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)
Pad switch SW601 (circuit 6)	2-position slide switch	Enables -3dB signal level drop for CO line
		circuit.
Pad switch SW701 (circuit 7)
Pad switch SW801 (circuit8)
RCOU3A connector J11, J12,	11-pin female connector	Interface connector for RCOU3A. RCOS3A can
J13, J14		be connected with RCOU3A and RCOU1A.
Mu Law/A Law jumper plug		No jumper plug is the default for the U.S. and
		Canada. For countries requiring A Law, insert
P2	3-terminal jumper
		the jumper plug (provided in the PCB box) on
(RCOS3A only)
		the A Law side.
Table 6-11 RCOS1A Controls, Indicators, and Connectors
Control/Indicator/	Type of Component	Description
Connector
		Lights to indicate that line circuit is in operation.
CO line circuit 5~8 indicators	Red LED	(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)
Pad switch SW601 (circuit 2)	2-position slide switch	Enables -3dB signal level drop for CO line
		circuit.
Pad switch SW701 (circuit 3)
Pad switch SW801 (circuit 4)
RCOU connector J11, J12,	Female connector	Interface connector for RCOU 4-circuit loop
J13, J14		start CO line unit.

PCB Installation

Strata CTX I&M 06/04 6-23