AudioCodes 420HD - Figure 20-4: Web Interface - Media Streaming - Codecs

Administrator's Manual 20. Configuring Media Settings
Version 2.2.8 129 400HD Series IP Phones
Parameter Description
Codec Type
[voip/codec/codec_info /%d/name]
Name of the codec. The variable %d depicts the index
number of the codec entry and its priority, where the first
codec (i.e. voip/codec/codec_info/0/name=…) has the
highest priority. The valid codec parameters are:
 [G722] G.722 (default)
 [PCMA] G.711 A-Law
 [PCMU] G.711 Mu-Law
 [G729] G.729
 OPUS
For example, voip/codec/codec_info/0/name=G722.
Note:
 If OPUS is selected from the list of codecs on a phone
that doesn’t support the OPUS codec, a warning pops
up: 'The hardware doesn't support the OPUS codec'
(see the figure below).
 If a call starts with the OPUS codec and the user makes
a conference call, the phone switches from the OPUS
codec to G.711 for the conference call.
Packetization Time
[voip/codec/codec_info /%d/ptime]
Packetization time - length of the digital voice segment
that each packet holds.
The default is 20 millisecond packets, excluding G.723
which is 30 millisecond packets.
G.723 Bitrate
[voip/codec/g723_bitrate]
Low or high bit rate for G.723.
 [LOW] Low

[HIGH]
High (default)
[voip/codec/g722_bitrate]
G.722 bit rate.
 [G722_64K] (default)
 [G722_56K]
 [G722_48K]
Note: Currently, only 64bps is supported.
[system/activation_keys/amr_coder]
Activation key (string) required to unlock AMR coder
(relevant for supporting firmware only).
Figure 20-4: Web Interface - Media Streaming - Codecs