Owner's manual

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Functional description 765

Foreign and surge voltage protection

Lightning protectors must be installed between an external T1 carrier

facility and the system. For public T1 facilities, this protection is provided

by the local operating company. In a private T1 facility environment (a

campus, for example), the NTAK92 protection assembly can be used.

The NTAK09 circuit card conforms to safety and performance standards

for foreign and surge voltage protection in an internal environment.

Lightning protectors must be installed between an external T1 carrier

facility and the Option 11C cabinet. For public T1 facilities, this protection

is provided by the local operating company. In a private T1 facility

environment (a campus, for example), the NTAK92 protection assembly

may be used.

The NTAK09 circuit card conforms to safety and performance standards

for foreign and surge voltage protection in an internal environment.

Lightning protectors must be installed between an external T-1 carrier

facility and the CS 1000 system. For public T-1 facilities, this protection

is provided by the local operating company. In a private T-1 facility

environment (a campus, for example), the NTAK92 protection assembly

can be used.

The NTAK09 circuit card conforms to safety and performance standards

for foreign and surge voltage protection in an internal environment.

Functional description

NTAK09 provides the following features and functions:

• configurable parameters, including A-Law and µ-Law operation, digital

pads on a per channel basis, and Superframe or Extended Superframe

formats

•

AMI or B8ZS line coding

•

1.5 Mb Clock recovery and distribution of reference clocks

• DG2 or FDL yellow alarm methods

• card status and alarm indication with faceplate-mounted LEDs

• automatic alarm monitoring and handling

• Card-LAN for maintenance communication

• loopback capabilities for both near-end and far-end

• echo canceler interface

• integrated trunk access (both D-channel and in-band A/B signaling can

be mixed on the same PRI)

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008