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ITU-T Recommendations

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

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Updated :�2006/07/19