2.11 Impedance Matching
The Impedance Matching switch inside the compartment in the base of the
NRX-3 allows the NRX-3 to be connected to different types of PABXs. There
are 3 positions in this switch for selecting the matching impedance with the
PABX. The NRX-3 has been factory set in position ‘Complex’. The other two
settings, 600 ohm and 900 ohm are suitable for certain PABX types.
Please note the compartment door should be replaced when settings completed.
2.12 Modem / Data Connection Socket
The NRX-3 has an additional socket marked MODEM, which allows the user to
connect an extra telephone, modem or fax machine to the telephone line. This
socket is at the back panel of the base cabinet and has a removable plastic cover.
Only equipment complying with ACA standards and intended for connection to
the telephone network should be connected to this port marked MODEM.
2.13 Message Waiting
The NRX-3 has a built in LED and neon lamp for message waiting indication. This
is compatible with various PABX systems providing such features. Different types of
message waiting signal can be programmed into the telephone using the
following procedure:
POLARITY NORMAL - Lift Handset then enter:
[PROGRAM] [PAUSE/LNR] [0] [PROGRAM] [*]
POLARITYREVERSED - Lift Handset then enter:
[PROGRAM] [PAUSE/LNR] [1] [PROGRAM] [*]
90VDC - Lift Handset then enter:
[PROGRAM] [PAUSE/LNR] [2] [PROGRAM] [*]
The Telephone is supplied set to the default setting of Polarity Normal.
NOTE: There is a switch located in the switch compartment which can be used
to turn the Message Waiting facility ON or OFF.
2.14 Pause Button
If the NRX-3 is being connected to a PABX system which requires the dialling of
an additional digit (most commonly digit “0”), a pause may be required for
accessing the external telephone line. The Pause key may be used for providing
the pause period of about 4 seconds while waiting for this dial tone after the
first digit has been dialled. This will be stored in the Last Number Redial memory
and be automatically inserted in the number when the LNR button is used.
2.15 Speakerphone
The ‘SPEAKER/HS’ button allows the user to operate the telephone without
lifting the handset. Press the ‘SPEAKER/HS’ button once, then operate the
telephone as normal. Communication with the party at the other end of the
telephone line is possible using the built in Microphone and Speaker. To indicate
NRX-3
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Display Feature Phone
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