Keypad Tone; What Does Dtmf Stand For? - Iridium 9555 User Manual

T
I r idium
1 6 : 2 8 1 4 - M a y- 0 8
M e nu H e lp
M e nu
P h oneb o ok
M e ssages
Voicemail
Data M o dem
Call H i story
Setup
Security
Select Back
Setup
Call Options
Volumes and Tones
Time & Date
Language
Backlight
Contrast
Key Setup
Select Back