Table of Contents

 1     Scope          
        1.1     Applicability statements           
 2     References
 3     Definitions 
        3.1     Terms defined elsewhere        
        3.2     Terms defined in this Recommendation            
 4     Abbreviations and acronyms             
 5     Conventions             
 6     Overview – XoIP emulation services versus applicable de-jitter buffer modes of operation 
 7     Characteristics of de-jitter buffers  
        7.1     General            
        7.2     Purpose, operation and environment
        7.3     External enabling of fixed de-jitter buffers      
 8     Activation of de-jitter buffer for VBDoIP      
        8.1     Activation of de-jitter buffer for ISDN bearer service  
 9     Characteristics of VBD-mode switching of de-jitter buffers 
        9.1     General            
        9.2     Detector characteristics            
10     Requirements for configuration of de-jitter buffers              
       10.1     Fixed de-jitter buffers              
       10.2     Adaptive de-jitter buffers      
      10.3      Activation procedure into the fixed mode       
       10.4     Transition from VBD to voice mode ([ITU-T V.152])     
       10.5     Handling of de-jitter buffer in case of lost or late packets         
Annex A – De-jitter buffer facsimile tests    
        A.1     Measurement method             
Appendix I – Features of ITU-T V.17 fax and V.34 fax    
        I.1     Features of V.17 fax (V.17 fax modem)               
        I.2     V.34 high-speed fax     
                  I.2.1     Features             
        I.3     The ITU-T V.34 fax connection and session        
        I.4     ECM as a mandatory feature   
        I.5     Suitable XoIP emulation services for V.34 fax   
Bibliography