ETS 300 745-1 : 20001

Foreword
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Description
6 Operational requirements
   6.1 Provision and withdrawal
   6.2 Requirements on the receiving user's network
       side
   6.3 Requirements on the controlling user's network
       side
7 Coding requirements
   7.1 Coding of the facility information element
       components
8 State definitions
9 Signalling procedures at the coincident S and T
   reference point
   9.1 Activation at the controlling user's interface
   9.2 Deactivation at the controlling user's interface
   9.3 Activation at the receiving user's interface
   9.4 Deactivation at the receiving user's interface
   9.5 Invocation of the MWI to the receiving user
10 Procedures for interworking with private ISDNs
   10.1 Activation of the message waiting indication
        where the controlling user resides in a
        private network
   10.2 Deactivation of the message waiting indication
        where the controlling user resides in a
        private network
   10.3 Activation of the message waiting indication
        where the receiving user resides in a private
        ISDN
   10.4 Deactivation of the message waiting indication
        where the receiving user resides in a
        private ISDN
11 Interaction with other networks
12 Interaction with other supplementary services
13 Parameter values (timers)
14 Dynamic description (SDL diagrams)
   14.1 Controlling user
   14.2 Receiving user
Annex A (informative): Signalling flows
Annex B (informative): Assignment of object identifier
        values
History

ISDN UNI layer 3 signalling protocol for supplementary service. MWI is to support (voice) mail systems. Offers possibility to give an indication that (voice) mail is an option, to the intended recipient.