Nortel Networks 553-3001-211 manual Environment, NTAK10 LED states Part 2

NTAK10 2.0 Mb DTI card Page 711 of 894

Table 229

NTAK10 LED states (Part 2 of 2)

LED	State	Definition
	Flashing	The clock controller is switched on and locking onto the
	(Green)	primary reference.
	Off	The clock controller is switched off.
		Note: See “Clock controller interface” on page 717 in this
		chapter for more on tracking and free-run operation.

Power requirements

The 2MB DTI obtains its power from the backplane. It draws less than 2 A on +5 V, 50 mA on +15 V and 50 mA on –15 V.

Environment

The NTAK10 card meets all applicable Nortel Networks operating specifications.

Functional description

The NTAK10 provides the following features and functions:

•a clock controller that can be switched in as an option

•software-selectable A/µlaw operation

•software-selectable digital pads on a per channel basis

•frame alignment and multiframe alignment detection

•frame and multiframe pattern generation

•CRC-4 transmission and reception (software selectable)

•card status and alarm indication with faceplate-mounted LEDs

•Periodic Pulse Metering (PPM) counting

•outpulsing of digits on any of the ABCD bits

Circuit Card Description and Installation