Towards a complete multimedia mail: Use of MHEG in standard messaging systems
This paper addresses multimedia aspects in messaging services. It highlights the functionalities that are missing to provide what we call a complete multimedia mail service and it gives standard solutions to integrate those additional functionalities in standard messaging systems.
A complete multimedia messaging system does not provide only means to exchange simple multimedia messages having a reasonable size. It should first enable the transfer of multimedia information, directly or by references (e.g. for huge message). In case it uses a reference, files may be retrieved in connected mode. This is, in fact, already included in most messaging systems. Second, it should also be open to the introduction of new media types. This requires the introduction of functionalities to prevent the fact some workstations cannot support those media types. Third, it should enable the composition, the exchange and the presentation of formatted multimedia messages.
MIME and X.400-based solutions are presented for the two first issues. For the third issue, we have chosen MHEG as a basis. This future standard is promising and this paper presents how to implement MHEG functionalities in messaging systems.
KeywordsMultimedia electronic mail MHEG MIME X.400 Standards
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