G.711

g.711 is an ITU-T recommendation for an audio codec for telephony.

g.711 a-law

A recommendation for the Non-North American regions.

g.711 mu-law, g.711 u-law

A recommendation for the North American region.

NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1

ITU-T Telecommunication Standardization Sector