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 300 518
Digital cellular telecommunications system (Phase 2) (GSM); Closed User Group (CUG) supplementary se
$11.00 $21.51
ETSI ETS 300 519
Digital cellular telecommunications system (Phase 2) (GSM); Advice of Charge (AoC) supplementary ser
$9.00 $17.50
ETSI ETS 300 520
Digital cellular telecommunications system (Phase 2) (GSM); Call Barring (CB) supplementary services
$11.00 $21.51
ETSI ETS 300 521
European digital cellular telecommunications system (Phase 2); Network functions (GSM 03.01)
$11.00 $21.51
ETSI ETS 300 522
Digital cellular telecommunications system (Phase 2) (GSM); Network architecture (GSM 03.02)
$11.00 $21.51
ETSI ETS 300 523
European digital cellular telecommunications system (Phase 2); Numbering, addressing and identificat
$11.00 $21.51
ETSI ETS 300 524
European digital cellular telecommunications system (Phase 2); Signalling requirements relating to r
$13.00 $25.50
ETSI ETS 300 525
European digital cellular telecommunications system (Phase 2); Restoration procedures (GSM 03.07)
$9.00 $17.50
ETSI ETS 300 526
Digital cellular telecommunications system (Phase 2) (GSM); Organization of subscriber data (GSM 03.
$11.00 $21.51
ETSI ETS 300 527
Digital cellular telecommunications system (Phase 2) (GSM); Handover procedures (GSM 03.09)
$34.00 $68.00
ETSI ETS 300 528
European digital cellular telecommunications system (Phase 2); GSM Public Land Mobile Network (PLMN)
$26.00 $52.50
ETSI ETS 300 529
Digital cellular telecommunications system (Phase 2) (GSM); Technical realization of supplementary s
$15.00 $29.50
ETSI ETS 300 530
European digital cellular telecommunications system (Phase 2); Location registration procedures (GSM
$9.00 $17.50
ETSI ETS 300 531
European digital cellular telecommunications system (Phase 2); Discontinuous Reception (DRX) in the
$7.00 $14.00
ETSI ETS 300 532
European digital cellular telecommunications system (Phase 2); Support of Dual Tone Multi-Frequency
$9.00 $17.50