ISDN will incorporate both broadband and 64 kbit/s based ISDN, however this Recommendation does not address the specific multimedia services that will make use of the network capabilities.

• 本建议的目的是为了确定支持多媒体业务的网络能力。ISDN将包括宽带和基于64kbit/s ISDN两种网络，然而本建议不涉及将利用该网络能力的特定多媒体业务。