Siemens OPTIPOINT 500 - Manual (Page 52)

Option Adapters and Ports Nur für den internen Gebrauch
P31003-E8400-A100-3-7620
5-6 Service Manual
optiPoint 500 acoustic adapter
Desk Microphone:
Pin assignment Headset: MW 8/8
The electrical values comply with FTZ 121TR9-5.
Pin assignment Floating contact: MW6/6
5.2.1 Electrical Requirements of the Headset
Input level -50 dBm: -12 dBm PCM signal
Input resistance: 150k parallel with 220 nF in series with 36K
Sense lead to GND: Internal microphone deactivated
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8
TX GND TX_AUD RX_AUD RX_AUD TX_AUD - RX_BUS
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6
NA ACT1 RING RING ACT2 NA
● The electrical values comply with FTZ 121TR9-5
● Audio transmission from one headset is routed to the other headset (recommended
by Plantronics).
● The way in which this option interacts with the telephone and the CS is described by
the CorNet-TS layer 3 specification for Symphony.
The CS can detect a headset after it has been plugged into this option.
● Microphone (Elektret interface):
Max. current:
≤ 400 µA
Supply voltage: 5 V
±10%
Series resistance: 5 k
Ω±10%
● Audio converter:
Impedance: 150
Ω±10%
EBD: 13 dB±2.5dB