1687289216

Function

Parlay Environment

Web Services Environment

Daidalos En\ironment

Type of services

Prepaid, postpaid and event based

event based

Prepaid, postpaid and event based (multimedia oriented, compatible with MPEG 7 and MPEG 21)

Type of informa-tion in messages

service-oriented and resource-oriented

service-oriented

service-oriented and resource-oriented

Interaction between the Application and the Service.

strong

minimal

Very strong

Signalling

Intemal CORBA or wsdl

No end-to-end signalling

end-to-end signalling SIP

Network capabili-ties

Mobility, call-connection

Minimal (http type protocols)

Very comprehensive: Mobility, call-connection (SIP), servi-ce adaptation

System interface and object forma-lism

Comprehensive (fuli specification)

Fuli specifications in upper application layer

Mixed (legacy codę reuse)

Maturity

Commercial stage

Approaching

Very novel but no com-plete formal specifications

Type of system interfaces and pro-tocols

No protocols

W3C and Oasis protocols

IETF protocols and other standardised Solutions in addition to intemal interfaces

Technical platform for services, reso-urces

Not concemed with network - only network interfaces

Internet

CAON** as part of MMSPP (equivalent of IMS in 3GPP)

Broadcast

Nonę supported in a native way

Nonę supported in a native way

supported