Rcou Installation - Toshiba Strara CTX Series Installation And Maintenance Manual

Figure 4-12 RCOS PCB

RCOU Installation

Note The decibel (dB) Pad switches SW101, SW201, SW301, and SW401 control excessive
loudness resulting from close proximity to an Exchange Line or PBX telephone office by
providing a -3 dB signal level drop to, or from, the PBX or Exchange Line when set to the 3
position. Switches are factory-set to the 0 (0 dB signal level drop) position.
To install an RCOU3F PCB
1. If the Strata CTX system is within one mile of the PBX or Exchange Line, set the RCOU dB Pad
switches SW101, SW201, SW301, and SW401 to the 3 (-3 dB signal level drop) position.
2. (RCOU3F only) For Mexico, the U.K, or Asia, insert the short jumper plug on the A Law side. For
the U.S. and Canada, no plug is required. (No plug is the Mu Law assignment).
3. Insert the RCOU (component side facing right) into the appropriate slot and apply firm, even
pressure to ensure proper mating of connectors. PCOU2 can be installed in place of RCOU, see the
appropriate Configuration chapter.
4. After installing the RCOU, gently pull the PCB outward. If the connectors are properly mated, a
slight resistance is felt.
Strata CTX I&M September 2002
Exchange Line
Modular Jack
Circuits 3 and 4
Exchange Line
Modular Jack
Circuits 1 and 2
Exchange Line LEDs
PCB Installation
5811
4-17