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 GTS GSM 02.83
Digital cellular telecommunications system; Call Waiting (CW) and Call Holding (HOLD) supplementary
$9.00 $17.50
ETSI GTS GSM 02.84
Digital cellular telecommunications system; Multi Party (MPTY) supplementary services; Stage 1 (GSM
$9.00 $17.50
ETSI GTS GSM 02.85
Digital cellular telecommunications system; Closed User Group (CUG) supplementary services; Stage 1
$11.00 $21.51
ETSI GTS GSM 02.86
Digital cellular telecommunications system; Advice of Charge (AoC) supplementary services; Stage 1 (
$9.00 $17.50
ETSI GTS GSM 02.87
Digital cellular telecommunications system (Phase 2+) (GSM); User-to-User Signalling (UUS); Service
$11.00 $21.51
ETSI GTS GSM 02.88
Digital cellular telecommunications system; Call Barring (CB) supplementary services; Stage 1 (GSM 0
$11.00 $21.51
ETSI GTS GSM 02.90
Digital cellular telecommunications system; Unstructured Supplementary Service Data (USSD); Stage 1
$9.00 $17.50
ETSI GTS GSM 02.91
Digital cellular telecommunications system (Phase 2+) (GSM); Explicit Call Transfer (ECT) (GSM 02.91
$11.00 $21.51
ETSI GTS GSM 02.93
Digital cellular telecommunications system (Phase 2+) (GSM); Completion of Calls to Busy Subscriber
$13.00 $25.50
ETSI GTS GSM 02.95
Digital cellular telecommunications system (Phase 2+) (GSM); Support of Private Numbering Plan (SPNP
$11.00 $21.51
ETSI GTS GSM 02.97
Digital cellular telecommunications system (Phase 2+) (GSM); Multiple Subscriber Profile (MSP); Serv
$9.00 $17.50
ETSI GTS GSM 03.01
Digital cellular telecommunications system (Phase 2+) (GSM); Network functions (GSM 03.01)
$11.00 $21.51
ETSI GTS GSM 03.02
Digital cellular telecommunications system (Phase 2+) (GSM); Network architecture (GSM 03.02)
$11.00 $21.51
ETSI GTS GSM 03.03
Digital cellular telecommunications system (Phase 2+) (GSM); Numbering, addressing and identificatio
$13.00 $25.50
ETSI GTS GSM 03.04
Digital cellular telecommunications system; Signalling requirements relating to routeing of calls to
$13.00 $25.50