Category:ITU-T勧告

X.500

G.726

H.248

X.400

CHILL

JBIG

JBIG2

T.37

H.263

Intelligent Network

T.38

G.721

G.729.1

MSISDN

Open Document Architecture

TTCN

G.719

G.718

H.320

X.121

ASN.1

Common Management Information Protocol

E.164

G.723

G.723.1

G.728

H.225.0