42 Series: Service aspects ("stage 1")

Security aspects
Subscriber Identity Module (SIM); Functional characteristics
Subscriber Identity Module Application Programming Interface (SIM API); Stage 1
Lawful Interception; Stage 1
Support of Localised Service Area (SoLSA); Service description; Stage 1
GSM Cordless Telephony System (CTS), Phase 1
⇒ Service description; Stage 1
Voice Group Call Service (VGCS); Stage 1
Voice Broadcast Service (VBS); Stage 1