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32 Chapter 3 Installing the R2MFC card
N0087114 1.0
Figure 8 R2MFC card RJ48 wiring array
Warning: Allow only qualified persons to service the Norstar system.
Service personnel with the appropriate training and experience, must perform the
installation and service of this unit. Service personnel must be aware of the hazards of
working with telephony equipment and wiring. They must have experience in techniques
that minimize any danger of shock or equipment damage.
Warning: Leakage currents
Service personnel must be alert to the possibility of high-leakage currents becoming
available on metal system surfaces during power line fault events on network lines. These
leakage currents normally safely flow to Protective Earth ground through the power cord.
However, if the AC power is unplugged prior to disconnecting the cables from the front of
the base function tray, high-leakage currents available on metal system surfaces can occur.
System shutdown: You must disconnect the R2MFC cardcables from the system before
disconnecting the power cord from a grounded outlet.
System startup: You must reconnect the power cords to a grounded outlet before
reconnecting the cables to an R2MFC card.
R2MFC card con-
nector
To network To plug
Receive from
network
1- RX_tip
2 - RX_ring
3 - RX_shield
Transmit to network
4-TX_tip
5-TX_ring
6-TX_shield
RJ48 jack