Accept-Language
An example of the header is shown below:
Accept-Language: da, en-gb;q=0.8, en;q=0.7
The header properties are shown in the following table:
| 
                                                             Header Level Action  | 
                                                        
                                                             Add  | 
                                                        
                                                             Delete  | 
                                                        
                                                             Modify  | 
                                                        
                                                             List Entries  | 
                                                    |
|---|---|---|---|---|---|
| 
                                                             Operations Supported  | 
                                                        
                                                             Yes  | 
                                                        
                                                             Yes  | 
                                                        
                                                             No  | 
                                                        
                                                             N/A  | 
                                                    |
| 
                                                             Keyword  | 
                                                        
                                                             Sub Types  | 
                                                        
                                                             Attributes  | 
                                                    |||
| 
                                                             N/A  | 
                                                        
                                                             N/A  | 
                                                        
                                                             N/A  | 
                                                    |||
Below is a header manipulation example:
| 
                                                             Rule:  | 
                                                        
                                                             Add a new Language header to all INVITE messages: 
 
 
 
  | 
                                                    ||||||||||||
| 
                                                             Result:  | 
                                                        Accept-Language: en, il, cz, it  |