Sennheiser S1 DIGITAL Instruction Manual page 25

Using the S1 DIGITAL
Remote-controlling a mobile phone
If your S1 DIGITAL has a Bluetooth connection to your mobile phone,
the
also hear the ring tone of your mobile phone in the headset if your
mobile phone supports this function.
When the mobile phones rings:
Button Duration
2s
When the mobile phone is switched on, does not ring and you do not make a
phone call:
Button Duration
1 s
24 | S1 DIGITAL
LED flashes blue when the mobile phone is ringing. You can
Function
Accepts/ends the call
Rejects the call (acknowledgement tone)
Function
Redials the last number (acknowledgement tone)
Activates voice dial