Overview Page 57 of 894

following the grounding connection requirements as described in System installation (553-3001-210). This requirement includes connecting the ground for the protection devices to the approved building earth ground reference. Any variances to these grounding requirements could limit the functionality of the protection device.

Line and telephone components

Because testing of the line protectors was limited to the line cards and telephones shown below, only these components should be used for off-premise installations.

Telephones

Meridian Modular Telephones (digital)

Meridian Digital Telephones

Standard analog (500/2500-type) telephones

Line cards

NT1R20 Off-Premise Station Line card

NT8D02 Digital Line card

NT8D03 Analog Line card

NT8D09 Analog Line card with Message Waiting

Trunk cards

The following trunk cards are designed using the IPE architecture, and are recommended for use in all new system designs.

Circuit Card Description and Installation

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Nortel Networks 553-3001-211 manual Trunk cards, Line and telephone components, Telephones, Line cards