Siemens C75 - Calling; Dialling and Ending Calls

Company Confidential s Com
Copyright 2005© Siemens AG
Page 29 of 37
Service Repair Documentation
Level 2.5e – C75
Release 1.0
9 Interfaces
9.1 Microphone (XG1901)
in Name IN/OUT Remarks
1 MIC1A O Microphone power supply. The same line carries the low
frequency speech signal.
2 MIC1B GND_MIC