ATCOM AT840 User Manual page 3

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) .................................................................................................................................................................... T
rouble 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
NAM TRUONG GIANG
www.lapdattongdaidienthoai.com
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