User Manual
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4.3.2 Description / Connectors 62
4.3.3 install the add-on to the desk phone 63
4.3.4 Icon description 63
4.3.5 Install more than one add-on module 64
4.4 Wall mounting kit 64
4.5 USB external ringing interface module (USB Interface module 2 relays 3GV28184AA) 65
4.5.1 Installation 65
4.5.2 Connect the device 65
4.6 Third parties headset certified in Developer and Solution Partner Program (DSPP) 66
5 Technical specifications 67
6 Ordering information 68
7 Guarantee and clauses 69
7.1 Safety Instructions 69
7.2 Regulatory Statements 70
Quick guide 72