Ericsson GH688 - Key Functions; How to Select Key Lock

Charger
How to connect 3
How to disconnect 3
Clock 27
How to set 27
Conference call
How to initiate 40
Cost of last call
How to check 48
Credit limit for calls
How to set 49
D
Data 51
Data menus
How to activate 22
Date 27
How to set 27
Date format
How to set 27
Dialled numbers memory 18
How to erase
phone numbers 18
Display 5
Display language 5
How to use as
scratch pad 10
Indicators 7
Time 5
Display call units
How to 49
Display language
How to change 22
Display light
How to change 20
Divert calls 29
DTMF
Automatic 34
How to send
code during call 34
How to use
several pauses 34
Pause function 34
Pre-programmed
signalling 34
DTMF tones 34
E
Ear piece volume
How to change 19
F
First characters
How to check 13
Fixed dialling 50
How to activate 50
How to cancel 50
Fixed numbers
How to store 50
G
Greeting text
How to change 21
K
Key sound
How to select 20
Keylock
How to select 20
Keypad
How to lock 26
How to unlock 26
Key functions 6
Keypad lock 26
L
Last dialled numbers
How to recall 18
Letter
How to enter lower-case 13
Letters
How to enter 12
Line
How to select 47
EN/LZT 126 1353 R1B 57