Toshiba CTX28 manual Rcms LEDs, LED Indications Normal Operation Status, Nb Led Cb Led

PCB Installation

RMCU/RCMS – E911 CAMA Trunk Direct Interface

RCMS LEDs

Customer Busy (CB) LEDs – The RMCU firmware controls this LED synchronizing with off-hook status inside switch.

Network Busy (NB) LEDs – RMCU hardware controls this LED synchronizing with the supply of voltage from the carrier.

Table 6-20 LED Indications (Normal Operation)

	Status	NB LED	CB LED
		(Network Busy)	(Customer Busy)
1	No network connection.	On	Off
	RMCU is in stand-by mode.
2	Network connected.	Off1	Off
	RMCU is in stand-by mode.
	Network is in stand-by mode and the RMCU
3	is off hook.	Off	On
	Network is connected and the RMCU MF
	sending dial tone.
4	Network is seizing and the RMCU is off-	Flashing	On
	hook.
	Network is connecting, before ANI is sent,
5	and the RMCU is sending.	On	On
	Network is connecting and the RMCU is
	communicating.
		On then Off
6	Network is disconnecting first and then the	NB is turned off, then	On then Off
	RMCU disconnects.	approx. 400 msec
		after CB is turned off.
		On then Off
7	RMCU is disconnecting first and then the	NB is turned off	On then Off
	network disconnects.	within 700 msec after
		CB is turned off.

1.If the NB LED stays On, even if the modular connector of the network is connected, check the following:

●Tip and Ring could be reversed.

●Network could be busy.

PCB Installation

Strata CTX I&M 06/04 6-41