Telephone Connections; Exchange Line Connection; Power Fail Telephone And Fax Connection; Figure 2-12: Telephone Connection - NEC Xen alpha Installation Manual

Telephone Connections

The B614-B13 ETU supports the connection of 6 digital extensions via CN1. Each port
requires a single twisted pair cable and the connection is not polarity conscious. (Refer
to Figure 2-12: Telephone Connection, Pg 54)

Exchange Line Connection

The B614-B13 ETU supports the connection of 2 analogue exchange lines (Central
Office or PABX) via CN2. This 2-wire connection is not polarity conscious. (Refer to
Figure 2-13: Exchange Line Connection, Pg 54.)

Power Fail Telephone and Fax Connection

The B614-B13 ETU supports the connection of 2 analogue telephones via CN2 for use
during period of power failure (i.e. when AC power is lost and the system backup
batteries are depleted). Connection of each 2 wire analogue telephone is shown in
Figure 2-14: Power Fail Telephone and Fax Connection, Pg 55. In the event of a power
failure the analogue telephones are connected immediately to a CO/PBX line as
follows:
FAX/PFT1
(CN2, pins 5-6)
FAX/PFT2
(CN2, pins 7-8)
A detailed explanation of the operation and usage of Power Fail Telephones is given at
the end of Section 5.
54

Figure 2-12: Telephone Connection

Figure 2-13: Exchange Line Connection

CO1
CO2
Installation Manual, Chapter 2 – KSU Installation
A6-506000-642-01(8508), Release 6.0, November 2003