NEC NEAX 2000 specifications Power Failure Transfer

POWER FAILURE TRANSFER

POWER FAILURE TRANSFER

General Description

This feature provides for specified trunks to be automatically connected to designated Single Line Telephones in the event of AC power loss. It is normally utilized when the system is not equipped with reserve power.

Station Application

Single Line Telephones.

Operating Procedure

Operation is automatic upon loss of input power to the system.

Service Conditions

1.If the Central Office provides ground-start trunks, Single Line Telephones must be equipped with ground buttons to complete calls over the exchange network.

2.Power Failure Transfer (PFT) lines should not be wired to common bells, since these require outside power sources and therefore will not operate.

3.Both the PN-AUC card and the PZ-8PFT card can be used as the Power Failure Transfer (PFT) circuit.

4.When using the PN-AUC card, the Power Failure Single Line Telephones must be interfaced with a PN- AUC card. This card provides 2 Power Failure Transfer circuits (when the AUC card is used in the Long Line Circuit (LLC) Mode). The connection between the AUC card and the 4COT/8COT card is made via a flat cable. No. 0 and No.1 circuit of the 4COT/8COT can be used for the Power Failure Transfer connec- tion.

5.When using the PZ-8PFT card, each Port Interface Module (PIM) can contain one PZ-8PFT card which sup- plies 8 Power Failure Transfer circuits. This card is mounted on the front bracket of the PIM.

6.A maximum of 32 Power Failure Transfer connections are available per PIM.

7.When the Power Failure Transfer feature is activated, telephone service is limited to incoming calls and/or outgoing calls through the serving C.O.. The Power Failure Single Line Telephone must be compatible with the dialing scheme on the trunks, i.e. rotary dial or Dual-Tone Multi-Frequency (DTMF) dialing.

8.When the system is in power failure operation, Direct Inward Dialing (DID), CCSA, Tie Line and DISA calls cannot be received.

9.Multiline Terminals cannot be used as power failure stations.

10.All calls in progress and/or established calls are lost when a power failure occurs. When commercial power is restored, the system automatically reinitializes, dropping all calls in progress. Back-up battery is provid- ed to the system data memory to retain the data for the following features:

•Call Forwarding

•Speed Calling - Station

•Speed Calling - System

•Message Waiting

•Return Schedule Message Display

•Do Not Disturb

11.When a COT card is used as a ground-start trunk, the Power Failure Single Line Telephone must be provid- ed with a ground sending button for trunk access.

NEAX2000 IVS2
Business/Hotel/Data Features and Specifications	Page 247
NDA-24271, Issue 1.0