|
A
|
Organization of the work of ITU-T |
|
D
|
Tariff and accounting principles and international telecommunication/ICT economic and policy issues |
|
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
|
Environment and ICTs, climate change, e-waste, energy efficiency; 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
|
Telephone transmission quality, telephone installations, local line networks |
|
Q
|
Switching and signalling, and associated measurements and tests |
|
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, next-generation networks, Internet of Things and smart cities |
|
Z
|
Languages and general software aspects for telecommunication systems |
