Siemens optiPoint 500 Service Manual page 51

Nur für den internen Gebrauch
Ringing, alerting, and key tones are switched to the basic speaker (and not to the external
●
speaker port).
You can use the volume keys on the telephone to adjust the volume level of both the inter-
●
nal and external speakers.
You can also use the volume control on the external amplifier to adjust the volume of the
external speaker.
Headset MW8/8
Pin assignments, Desk Microphone and External Speaker: MW 8/8
Pin 1 Pin 2
+U GND
External Speaker:
Internal resistance:
Level (with PCM -20dBm):
Sense lead to GND:
P31003-E8400-A100-3-7620
Service Manual
Y cable MW8/8
for connecting
speaker and mi-
crophone
Floating contact
(MW6/6)
Pin 3 Pin 4
NF Sens
0 ohms; 10 µF
-4.8 dBm (at volume level 8; 0.775 V = 0 dBm)
Int. speaker deactivated, active for ringer only
Option Adapters and Ports
optiPoint 500 acoustic adapter
Pin 5 Pin 6
LS_SENS LSP
1 2 3 4 5 6 7 8
RJ45
Pin 7 Pin 8
NC DGND
5-5