Table of Contents

 1 Scope          
 2 References 
 3 Definitions 
        3.1 Terms defined elsewhere           
        3.2 Terms defined in this Recommendation 
 4 Abbreviations and acronyms
 5 Description
        5.1 Near-end call hold        
        5.2 Remote-end call hold   
 6 Messages and information elements   
 7 Actions at the holding endpoint          
        7.1 Normal procedures       
        7.2 Exceptional procedures              
 8 Actions at the held endpoint 
        8.1 Normal procedures       
        8.2 Exceptional procedures              
        8.3 Additional procedures 
 9 Interworking             
        9.1 Interworking with SCN
        9.2 Interworking with other supplementary services 
        9.3 Interaction with ITU-T H.225.0 parameters          
10 Gatekeeper/proxy actions    
       10.1 Remote-end call hold 
       10.2 Near-end call hold      
11 Dynamic description for call hold     
       11.1 Operational models and signalling flows             
       11.2 Communication between holding signalling entity (HGSE) and holding signalling entity user (HGSE user)    
       11.3 Communication between held signalling entity (HDSE) and held signalling entity User (HDSE user)    
       11.4 Timers            
       11.5 Counters        
12 Operations in support of SS-call hold              
13 SDLs          
       13.1 Near-end call hold SDLs           
       13.2 Remote-end call hold SDLs