R
range tone 40 red key 20 redial 25
registering, 420d Handset 19 requirements, MBU and 420d handset 17 reset button 19
ringer melody 38 ringer volume 38
S
Safety Information 10
Sensitive Electronic Environment 10 setting audio 37
settings 27 silent mode 40
SIP
account, choosing 36 password 24 proxy 24
user name 24 softkeys 20
Spanish language setting 32 speakerphone 27 speakerphone key 21
star key 21 system status 21
T
text input 30
time and date automatic 32 setting 32
time format 33 time zone 34 Troubleshooting 62
U
unlock 28
V
vibrate 40 voicemail 26
VoIP
call icons 42 calls 42
primary line setting 35 volume control 27 volume keys 21
W
warranty, limited 65 within range 25
Index
Aastra MBU 400 User Guide | 69 |