ATCOM AT840 User Manual page 4

AT840 Series User Manual
5.2. Line ...................................................................................................................................... 35
5.3. Features .............................................................................................................................. 35
5.4. Voice .................................................................................................................................... 37
5.5. Ring ...................................................................................................................................... 38
5.6. Tone ..................................................................................................................................... 38
5.7. Programmable key ............................................................................................................ 39
5.7. Ext Key ................................................................................................................................ 40
6) Update ............................................................................................................................................................... 41
6.1. Manual Update .................................................................................................................... 41
6.2. Reset & Reboot .................................................................................................................. 42
7) Phone Book ............................................................................................................................ 42
8) Call Log ................................................................................................................................... 43
5. FAQ & Trouble Shooting ............................................................................................................... 43
1) Frequently Asked Questions ................................................................................................................................. 43
1.1 How to make a factory reset ............................................................................................. 43
1.2 Upgrade firmware under safe mode ................................................................................ 43
1.3 How to make direct IP call ................................................................................................ 44
2) Trouble Shooting ................................................................................................................................................... 44
2.1 The phone can't register successfully ........................................................................... 44
2.2 The phone can't obtain IP address ................................................................................ 44
2.3 Only one part can hear the voice during the call .......................................................... 45
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