G.711

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

a.k.a.

g.711 mu-law which is a recommendation for the North American region.

g.711 u-law which is a recommendation for the Non-North American regions.

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

ITU-T Telecommunication Standardization Sector