NEC UX5000, Hardware Manual, Page: 252 / 334

4 - 58 Chapter 4
Chapter 4 - Terminals and Optional Equipment
● The dial pad should be flush with the surrounding plastic.
●
If the PSA dial pad needs to be removed, press the release located in the upper left-
hand corner of the dial pad toward the dial pad numbers and lift the dial pad up.
14. Press the buttons one by one to make sure that they are not stuck or that they have too much play.
15. Reattach the designation sheet and the upper and lower panels to the terminal.
16. Connect the line cord from an analog CO line to the adapter.
●
This should be a PSTN, dedicated CO trunk.
● This connection can also be to a main system haveing a PF circuit.
17. Plug the LAN cable into the keyset and connect the AC adapter into the keyset, if required.
4.14.8.2 Using the PSA-R Adapter:
With an analog line connected, the PSA-R adapter will automatically switch to the analog line
connection when power is lost.
Placing Calls:
1. When the PSTN line has been activated either manually by the switch or due to a power
failure, use the dial pad buttons (0-9, *, #) to place an outside call.
●
Other than receiving calls, no other keyset functions are available.
● The # and * keys are not functional if the DTMF/DP selector switch is set to pulse mode.
Answering Calls:
1. When a call is received, the PSA-R adapter rings using the piezoelectric buzzer and the LED
blinks. If the PSTN-IP/Digital Switch is set to PSTN (functions as power failure terminal),
answer the call by pickup up the handset. If the switch is set to the IP/Digital position, the
terminal functions as a system terminal when there is power and as a power failure terminal
when the power is off.
2. If an analog line is connected, the PSTN-IP/Digital selector switch can be used to switch to
the analog line manually (without having to lose power). If an incoming call is received on the
analog line while the PSA-R is connected to regular communications server trunks, the
terminating LED blinks and a ring tone is heard.
● You must complete your present call prior to answering the analog trunk call, otherwise
your original call will be disconnected.
●
Other than receiving calls, no other keyset functions are available while used as a power
failure terminal (PSTN).
CAUTION: Before installing or removing the PSA-R adapter, be sure to
fi rst remove the line cord, LAN cable, and then AC adapter from the
outlet.