The present document (part 1) specifies tests applicable to all Digital Enhanced Cordless Telecommunications (DECT) equipment accessing the DECT frequency band 1 880 MHz to 1 900 MHz (including provisions for testing other or extended frequency bands as described in EN 300 175-1 [i] and EN 300 175-2 [2]). Part 2 of the present multi-part deliverable specifies tests applicable to DECT speech transmission using ITU-T Recommendation G.726 [14] ADPCM speech codec at 32 kbit/s. The aims of the present document are to ensure: ? efficient use of frequency spectrum; ? no harm done to any connected network and its services; ? no harm done to other radio networks and services; ? no harm done to other DECT equipment or its services; ? interworking of terminal equipment via the public network. Through testing those provisions of EN 300 175@ which are relevant to these aims. The tests of EN 300 176 are split into two parts: ? part 1 (the present document) covers testing of radio frequency parameters@ security elements and those DECT protocols that facilitate the radio frequency tests and efficient use of frequency spectrum; ? part 2 describes testing of DECT 32 kbit/s ADPCM speech requirements between network interface and DECT PT@ or between a DECT CI air interface and alternatively a DECT PT or FT. Part 2 is not applicable to terminal equipment specially designed for the disabled (e.g. with amplification of received speech as an aid for the hard-of-hearing). DECT terminal equipment consists of the following elements: a) Fixed Part (FP); b) Portable Part (PP); c) Cordless Terminal Adapter (CTA); d) Wireless Relay Station (WRS) (FP and PP combined). Part 2 of the present document is structured to allow testing of either: a) the FP and PP together; or b) the FP and PP as separate items. Additional tests apply for equipment implementing ETSI-defined profiles (e.g. GAP@ DECT-GSM@ DECT-ISDN). These tests are found in related ENS and may supersede the requirements of the present document.