G.711 audio encoding format has a coding rate of approximately 64 kbps or 8 KBps. A message that is 1 minute long requires approximately 468.8 KB of storage space when encoded using the G.711 format. One hour of G.711 requires 27.5 MB of storage space. G.711-encoded messages occupy approximately five times as much storage space as GSM 6.10.
G.711 is an international standard telephony encoding format on a 64-kbps channel. G.711 uses the Pulse Code Modulation (PCM) encoding scheme. G.711 has an 8-bit format that is used primarily for telephone quality speech. G.711 has two variants: A-law and μ-law. Typically, A-law is used in Europe, and μ-law is used in the United States. SIP integration supports both A-law and μ-law.
G.711 is the default encoding format in Messaging.