The CCIR considering a) that for economic and practical reasons there are increasing numbers of GSO satellites having multiple networks in multiple services and/or using one or more frequency bands; b) that each of the networks may require different types of coordination procedures; c) that the GSO orbital spacing of the multi-network and/or multi-band spacecraft will be determined by the largest required orbital separation; d) that Annex 1 describes the difficulties associated with coordinating such satellite networks; e) Recommendation No. 715 of WARC ORB-88 invited the CCIR to continue its technical studies pertaining to multi-band and multi-service satellite systems.