08.08 version 5.4.0 created at SMG#20 version 5.5.0 created at SMG#21 as a result of CRs on GSM 04.08 Inform ation references, Correction of eMLPP and Priority and removal of subs cription in paging , HSCSD pool support, Circuit allocation by the BSS, blocking aspects, Circuit Allocation by the BSS, handover aspects, HSCSD, New causes co de for preempted connections, Consistency between octet 4 and octet 5, Circuit Allocation by the BSS, assignment aspects, Management of comp lex transcoder for HSCSD and ASCI option alignment. version 5.6.0 produced at SMG#22 SUBJECT Circuit Allocation by the BSS, unequipped circuit allocation Removal of redundant procedure Figures for allocation of circuits by BSC WI 14.4 kbit/s user data Correction of channel type code points SUBJECT External Handover prior to encrpytion (R97)