CONTENTS

 2     Call Hold (HOLD)
        2.1     Definition
        2.2     Description
        2.3     Operational requirements
        2.4     Coding requirements
        2.5     Signalling requirements
        2.6     Interactions with other supplementary services
        2.7     Interaction with other networks
        2.8     Signalling flows
        2.9     Parameter values (timers)
       2.10     Dynamic description
 4     Terminal Portability (TP)
        4.1     Definition
        4.2     Description
        4.3     Operational requirements
        4.4     Coding requirements
        4.5     Signalling requirements
        4.6     Interactions with other supplementary services
        4.7     Interactions with other networks
        4.8     Signalling flows
        4.9     Parameter values (timers)
       4.10     Dynamic description