Toshiba CTX28 manual Definition LED Off LED On LED Blinking, PSI1

RBUU1A

RJ45 Modular for Circuit 1

RJ45 Modular for Circuit 2

LED Indicators

for Circuit 1BSY

ISDN Interfaces

RBUU/RBUS Interface Unit

RBUS1A

LED Indicators

BSYfor Circuit 3

T S

PSI

F S

BSY

T S

PSI

F S

ISDN Interfaces

LED Indicators for Circuit 2

T S PSI F S

BSY T S PSI F S

RJ45 Modular for Circuit 3

RJ45 Modular for Circuit 4

LED Indicators for Circuit 4

RS-232C

Monitor Output

4776

Figure 7-25 Location of LEDs and Connectors (RBUU/RBUS)

Table 7-12 RBUU/RBUS LED Indications

LED	Definition	LED Off	LED On	LED Blinking
BSY	Busy	Port is in idle.	Port is busy.	Port is in test mode.
TS	Time	Not CLK extraction	Secondary CLK	Extracting CLK port.
	Synchronization	port.	extraction port.
PSI1	Port Status	Port is in LT mode.	Port is in NT mode.	AIB is received by this
	Indicator			port.
	Frame	Frame alignment is		Port is trying to
FS			Frame Alignment error.	establish frame
	Synchronization	established.
				alignment.
1. PSI is labeled LOS on Beta PCBs

Strata CTX I&M 06/04 7-29