ATCOM AT840 series User Manual page 3

AT8 AT8 AT8 AT84 4 4 4 0 0 0 0 Series Series Series Series User User User User Manual
5.2. Line......................................................................................................................................................... 33
5.3. Features................................................................................................................................................ 34
5.4. Voice.......................................................................................................................................................35
5.5. Ring........................................................................................................................................................ 36
5.6. Tone........................................................................................................................................................ 36
5.7. Programmable key............................................................................................................................37
5.7. Ext Key.................................................................................................................................................. 38
6) Update............................................................................................................................................................... 39
6.1. Manual Update................................................................................................................................... 39
6.2. Reset & Reboot...................................................................................................................................40
7) Phone Book............................................................................................................................................. 40
8) Call Log......................................................................................................................................................41
5. FAQ & Trouble Shooting............................................................................................................... 41
1) Frequently Asked Questions.......................................................................................................................41
1.1 How to realize the factory reset.................................................................................................... 41
1.2 Upgrade firmware under safe mode............................................................................................ 41
1.3 How to make direct IP call.............................................................................................................. 42
2) Trouble Shooting.............................................................................................................................................42
2.1 The phone can't register successfully...................................................................................... 42
2.2 The phone can't obtain IP address........................................................................................... 42
2.3 Only one part can hear the voice during the call................................................................... 43
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