Table 10-8

Additional External Power Supply for optiPoint 500 Key Modules and Adapters

optiPoint 500 key modules    optiPoint 500 Adapters	Is an additional external power supply required?	Plug-in power supply unit connection
optiPoint key module	generally not required1	series-connected2
optiPoint BLF	required	connected directly3
optiPoint analog adapter	required	series-connected2
optiPoint ISDN adapter	generally not required1	series-connected2
optiPoint phone adapter	generally not required1	series-connected2
optiPoint acoustic adapter	required4	series-connected2
optiPoint recorder adapter	generally not required1	series-connected2

1It is assumed that only one key module or adapter is implemented on each optiPoint 500 telephone. An additional external power supply may be required if several key modules and adapters are implemented on an optiPoint 500 telephone or the maximum UP0/E interface range is reached by the optiPoint 500 telephone. The telephone test described in Section 12.4.11 "Testing Telephones" will establish whether or not additional power is required from a local power supply. 2The local power supply is series-connected to the optiPoint 500 telephone: the "digital" RJ6 jack on the local power supply must be connected to the optiPoint 500 telephone. The other RJ6 jack must be connected to the UP0/E interface on the system. 3The local power supply is connected directly to the optiPoint BLF: one of the two RJ6 jacks on the local power supply unit must be connected with the center jack (indicated by the symbol of a power supply unit) on the optiPoint BLF. A local power supply can supply a maximum of two optiPoint BLFs. 4An additional external power supply is required if the floating contacts on the optiPoint acoustic adapters are being used.