1K0-001 · Question #326
Where is the G.711 A-law used?
The correct answer is D. E1 Networks. See the full explanation below for the reasoning.
Question
Where is the G.711 A-law used?
Options
- AT1 Networks
- BT3 Networks
- CATM Networks
- DE1 Networks
How the community answered
(27 responses)- A15% (4)
- B4% (1)
- C4% (1)
- D78% (21)
Community Discussion
3
Hiroshi T.Nov 22, 2025D is correct. G.711 A-law is the codec standard used on E1 networks, which are the 2.048 Mbps circuits deployed outside North America, while T1 networks in North America use G.711 mu-law (u-law) instead. The ITU-T G.711 specification itself spells this out directly.
Lena V.Nov 12, 2025G.711 A-law is the codec standard tied to E1 networks, which are the 2.048 Mbps circuits used in Europe and most of the world outside North America, while G.711 mu-law handles the T1 side. Quick check for you though, do you know why ITU split the companding law by region, and what that means for a gateway bridging an E1 to a T1 in terms of transcoding overhead?
Imani T.Oct 31, 2025G.711 A-law is the one for E1 networks, which are the European standard, while G.711 mu-law goes with T1 in North America. That regional split is a classic exam gotcha so lock it in now.