A |
Organization of the work of ITU-T |
B |
Means of expression: definitions, symbols, classification |
C |
General telecommunication statistics |
D |
General tariff principles |
E |
Overall network operation, telephone service, service operation and human factors |
F |
Non-telephone telecommunication services |
G |
Transmission systems and media, digital systems and networks |
H |
Audiovisual and multimedia systems |
I |
Integrated services digital network |
J |
Cable networks and transmission of television, sound programme and other multimedia signals |
K |
Protection against interference |
L |
Construction, installation and protection of cables and other elements of outside plant |
M |
Telecommunication management, including TMN and network maintenance |
N |
Maintenance: international sound programme and television transmission circuits |
O |
Specifications of measuring equipment |
P |
Terminals and subjective and objective assessment methods |
Q |
Switching and signalling |
R |
Telegraph transmission |
S |
Telegraph services terminal equipment |
T |
Terminals for telematic services |
U |
Telegraph switching |
V |
Data communication over the telephone network |
X |
Data networks, open system communications and security |
Y |
Global information infrastructure, Internet protocol aspects and next-generation networks |
Z |
Languages and general software aspects for telecommunication systems |