This Global System for Mobile communications Technical Specification ( GTS) deals with the procedures allowing the technical realization of t he real time end-to-end facsimile group 3 service within the GSM PLMN using non-transparent network support according to the definition of t he Teleservices 61 and 62 specified in GSM 02.03. Within this document particular attention is given to Teleservice Alternate speech/facsim ile group 3 (Teleservice 61). However, the definitions apply also to Teleservice Automatic facsimile group 3 (Teleservice 62) with the ex ception of all actions concerned with the speech phase. Consequently, in the following descriptions the term Teleservice denotes both Tele service 61 and Teleservice 62 as appropriate. NOTE: Some facilities associated with alternate speech/ facsimile grou p 3 may not be available with version 1 of MAP. In particular, the in- call modification procedure following an inter MSC handover is not sup ported by this version. This imposes the limitation that for all calls it will not be possible to change between speech and facsimile follow ing an inter MSC handover.