M3SR Series 4100
If the phone service is enabled, local acoustic signals are played at the radio operator's side,
and messages are displayed on the MMI. Messages will be sent to announce an incoming
call, to inform when the call session has been established, when the called party is ringing
or when the call session has ended.
Operating Manual 6175.4760.02 – 01
Voice over IP (VoIP)
5.113