User manual

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Page 32 of 458 Introduction
NN43021-310 Standard 02.02 October 2008
Whenever possible, install external power equipment before the system
installation. If reserve power equipment is used, install it according to the
manufacturer’s instructions.
To install telephones and attendant consoles, see Telephones and Consoles:
Description, Installation, and Operation (NN43001-567).
System installation must be performed by qualified personnel only.