AUDIOLINE BigTel 40 Plus - Handbuch (Seite 21)

Telephoning
21
Ringing tone
You can adjust the ringing tone using a slide control on the right−hand side
of the housing. There are 3 ringing tones for selection.
Change the ringing tone using the
slide control
Sending loudness rating
You can increase or reduce the sending loudness rating for the micro-
phone in the receiver by means of a slide control on the right−hand side of
the housing.
Adjust the volume using the slide
control
Service−Hotline Germany: Tel. 0180 5 001388, cost via German landline at time of going to print: 14 ct/min., different costs possible via mobile telephone systems