Internal speaker
The internal speaker is used in Internal HandsFree (IHF) call mode.
A dynamic 16 mm speaker is connected to N2200 outputs HFSpP and HFSpN.
The IHF amplifier integrated in N2200 is a Digital Pulse Modulated Amplifier (DPMA).
Figure 65 Internal speaker circuitry
External earpiece
All galvanic accessories are connected to the system connector.
The accessory audio mode is automatically enabled/disabled during connection/disconnection of dedicated
phone accessories.
Figure 66 External earpiece circuitry (system connector connected on the right)
RM-123; RM-145
System Module Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 8 –17
Copyright © 2006 Nokia. All rights reserved.
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