ETSI
Representing members from 54 countries, ETSI promotes worldwide standardization in telecommunications, broadcasting and information technology. The work of ETSI is closely aligned with the market needs of network operators, manufacturers, service providers, research institutions, and end users.
ETSI ETS 300 925
Digital cellular telecommunications system (Phase 2+) (GSM); Voice Group Call Service (VGCS) - Stage
$11.00 $21.51
ETSI ETS 300 926
Digital cellular telecommunications system (Phase 2+) (GSM); Voice Broadcast Service (VBS) - Stage 1
$11.00 $21.51
ETSI ETS 300 927
Digital cellular telecommunications system (Phase 2+) (GSM); Numbering, addressing and identificatio
$13.00 $25.50
ETSI ETS 300 928
Digital cellular telecommunications system; Technical realization of supplementary services (GSM 03.
$15.00 $29.50
ETSI ETS 300 929
Digital cellular telecommunications system (Phase 2+) (GSM); Security related network functions (GSM
$32.00 $63.00
ETSI ETS 300 930
Digital cellular telecommunications system (Phase 2+) (GSM); Functions related to Mobile Station (MS
$17.00 $33.00
ETSI ETS 300 931
Digital cellular telecommunications system (Phase 2+) (GSM); Technical realization of facsimile grou
$21.00 $41.00
ETSI ETS 300 932
Digital cellular telecommunications system (Phase 2+) (GSM); enhanced Multi-Level Precedence and Pre
$15.00 $29.50
ETSI ETS 300 933
Digital cellular telecommunications system (Phase 2+) (GSM); Voice Group Call Service (VGCS); Stage
$29.00 $58.50
ETSI ETS 300 934
Digital cellular telecommunications system (Phase 2+) (GSM); Voice Broadcast Service (VBS); Stage 2
$26.00 $52.50
ETSI ETS 300 935
Digital cellular telecommunications system; Advice of Charge (AoC) supplementary services; Stage 2 (
$13.00 $25.50
ETSI ETS 300 936
Digital cellular telecommunications system; Layer 1; General requirements (GSM 04.04 version 5.0.1)
$11.00 $21.51
ETSI ETS 300 937
Digital cellular telecommunications system; Data Link (DL) layer; General aspects (GSM 04.05 version
$13.00 $25.50
ETSI ETS 300 938
Digital cellular telecommunications system (Phase 2+) (GSM); Mobile Station - Base Station System (M
$26.00 $52.50
ETSI ETS 300 939
Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface signalling layer
$32.00 $63.00