Siemens 500 service manual Electrical Requirements of the Headset, Pin assignment Headset MW 8/8

Models: 500

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Option Adapters and Ports optiPoint 500 acoustic adapter

Desk Microphone:

 

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 assignment Headset: MW 8/8

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

 

 

 

 

 

 

 

 

The electrical values comply with FTZ 121TR9-5.

Pin assignment Floating contact: MW6/6

Pin 1

Pin 2

Pin 3

Pin 4

Pin 5

Pin 6

 

 

 

 

 

 

NA

ACT1

RING

RING

ACT2

NA

 

 

 

 

 

 

5.2.1Electrical Requirements of the Headset

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 A

Supply voltage:

5 V±10%

Series resistance:

5 k±10%

Audio converter:

Impedance:

150 ±10%

EBD:

13 dB±2.5dB

5-6

P31003-E8400-A100-3-7620

Service Manual

Page 52
Image 52
Siemens service manual Electrical Requirements of the Headset, Option Adapters and Ports optiPoint 500 acoustic adapter