CHAPTER 12 : EMERGING ISSUES

S. WENGER


New resources : Multicast BackBone ( MBONE )
Is an experimental virtual network superimposed upor Internet using IP multicast, which main application is videoconferencing

 

FUTURE TRENDS

Multimedia communications go away from the circuit switched networks ( PSTN,ISDN ) and move to packet oriented networks.
ITU-T group 16 responsable for Interactive Multimedia Communications is working based on the H.323 familly recomendations. This standard is now assumed by Microsoft ( Netmeeting ) and Intel in combination with the T.120 familly for data collaboration.
Packet oriented networks allow unlimited number of virtual connections by independent packet routing ( IP multicast )
Gateways between packet oriented H.323 world and the circuit swithched H.320 ( and H.324 ) world will be designed. It Internet traffic becomes too high it makes sence to automatically fall back to circuit switched guarantied QoS networks like ISDN ( which might be far more expensive ).
Broadcasting is also possible even now a days ( Netshow of Microsoft )

 

IP STIWCHING

A Lan emulator . Is an ATM standard that allow us to emulate a LAN
Only proxies and stiwches are required. Routers and hubs are not needed.
Use the classical IP protocol ( RCF 1577 standard )
Have two protocols :

GSMP

AFMP

 


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Revisado: jueves, 05 junio 1997.
Con el soporte informático y de comunicaciones del CICEI, Universidad de Las Palmas de Gran Canaria