UNE-ETS 300956 Ed1:2005 Digital cellular telecommunications system; Call Barring (CB) supplementary services; Stage 3 (GSM 04.88 version 5.0.1) (Endorsed by AENOR in November of 2005.)
2005UNE-ETS 300956 Ed2:2005 Digital cellular telecommunications system (Phase 2+) (GSM); Call Barring (CB) supplementary services; Stage 3 (GSM 04.88 version 5.1.0) (Endorsed by AENOR in November of 2005.)
2005UNE-ETS 300956 Ed1:2005 Digital cellular telecommunications system; Call Barring (CB) supplementary services; Stage 3 (GSM 04.88 version 5.0.1) (Endorsed by AENOR in November of 2005.)