Planet Technology VIP-155PT - Manual (Page 9)

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7 Redial
Press to dial the last dialed number when the IP Phone is
off-hooked.
8 PWR The green light goes on when power on.
9 Message
The green light goes on-off when there is an incoming call.
The light goes constant on when there have voice message
(Proxy Mode.)
10 Handfree
To switch between the usage of the handset and the speaker
devices.
11 Vol+
To increase the volume of voice when at off-hooked state.
To page up menu when at configuration mode.
12 Mute Press to mute sounds when at talk mode.
13 Menu/OK
To bring out the menu selection while IP Phone is in idle state.
To be used as confirm configuration or enter sub-menu.
14 Modify Press to modify the configuration.
15 Exit To escape to an upper layer menu selection.
16 Up
To increase the volume of voice when at off-hooked state.
To page up menu when at configuration mode.
17 Down
To decrease the volume of voice when at off-hooked state.
To page down menu when at configuration mode.
18 In call Show the incoming calls history.
19 Pbook Enter the phone book selection.
20 Record Enter the Voice Record selection.
21 Hold To hold the conversation.
22 Vol-
To decrease the volume of voice when at off-hooked state.
To page down menu when at configuration mode.
23 Del Delete digits when at Calling and Configuration modes.