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Appendix:

 

Supplementary

 

Services

  

 

Call Forward Busy function 

1.Call forward busy on, 

press "*24*"  or “*67*” and key in forward phone number(phone B) , then 

press "#”. If succeed, user will hear “dododo”; 

2.Call forward busy off, 

Press "#24#" or #67#”. If succeed, user will hear “dododo”; 

3.Call forward busy Status,

 press "*#24#" or *#67#”.  ON: continuous low-pitched tone

 

                                         OFF: continuous high-pitched tone. 

 

Call Forward unconditional Function 

1.Call forward unconditional on

, press "*21*" and key in forward phone number(phone B) , then 

press "#". If succeed, user will hear “dododo”; 

2. Call forward unconditional off.

 Press "#21#". If succeed, user will hear “dododo”; 

3. Call forward unconditional Status.

 Press "*#21#". ON: continuous low-pitched tone

 

                                              OFF: continuous high-pitched tone. 

 

 

Call Forward no reply Function 

1.Call forward no reply on: 

press "*61*" and key in forward phone number(phone B) , then press "#".  

If succeed, user will hear “dododo”; 

2.Call forward no reply off: 

Press "#61#". If succeed, user will hear “dododo”; 

3.Call forward no reply Status: 

press "*#61#". ON: continuous low-pitched tone. 

                                          OFF: continuous high-pitched tone. 

 

Note. The no reply period before call forwarding ton nominated number is 20sec. 

 

Call Forward unreachable Function 

 

1.Call forward unreachable on: 

press "*62*" and key in forward phone number(phone B) , then 

press "#". If succeed, user will hear “dododo”; 

2. Call forward unreachable off,

 Press "#62#" 

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