Cisco SPA-841 - Sipura VoIP Phone Administration Manual page 222

SPA9000 Field Reference
Voice tab
SPA9000 Voice System Administration Guide
AA Preferred Codec
AA User Pref Codec Only Forces the AA to use the preferred codec only.
Selects which codec is the preferred choice to play AA
prompts. Choices are {G711u, G711a, Low Bit Rate}. Low Bit
Rate refers to the selected <AA LBR Codec>. If <AA LBR
Codec> is none, G711u is the preferred codec also.
Default: G711u
Default: no
B
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