Siemens OPTIPOINT 500 - Manual (Page 32)

Product Description
P31003-E8400-A100-3-7620
2-18 Service Manual
Accessories
2.5.3 Local Power Supply Unit
You may need to use an optiset E local power supply unit to extend the range or operate addi-
tional options. The local power supply unit has two RJ11 jacks and is packaged with the con-
necting cable.
If the supply voltage exceeds 21 V, all devices are reset and any calls in progress released.
Primary/Client Configuration (see Section 5.5 on page 5-11)
The local power supply can be looped into the connecting line of the primary or client tele-
phone.
If a local power supply is connected in front of the client telephone, the phone adapter detects
this local power supply
(via pins 2+5) and turns off the power to the client telephone.
In this case, only the signals are received via the U
P0/E
interface.
If the power to the client fails, the phone adapter reactivates the power supply.
If the local power supply unit is connected in front of a primary telephone, the supplementary
power is fed via a diode. Because the optiset E local power supply unit has a higher voltage, it
supplies the power to the equipment.
Name Value
Line voltage 220 (230) V
AC line frequency 47-53 Hz
Max. output voltage 50 V
Min. output voltage 30 V
Max. output current 250 mA
Pin Assignment
1 Not used
2 - pole
3 Tip
4 Ring
5 + pole
6 Not used