AudioCodes 400HD Series - Page 82

400HD IP Phones Series - Teams Compatible
Administrator's Manual 82 Document #: LTRT-09960
Parameter Description
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:
 [SILK_8000 / SILK_16000] Skype's audio
compression format and audio codec that can use a
sampling frequency of 8, 12, 16 or 24 kHz and a bit
rate from 6 to 40 Kbit/s.

Compatible with Skype for Business

Flexible bit rate

High quality

Variety of sampling frequencies

Inband FEC and good resilience to packet loss
Note: G.722 was the first priority vocoder in version
releases prior to 3.0. When upgrading from releases prior
to 3.0, the list of vocoders remains unchanged. To set the
SILK to be the priority vocoder (inapplicable to the
445HD), restore the phone to its defaults or set the
vocoder list differently so that SILK is added. This can be
done manually or by provisioning.
 [G722] G.722 (default)
 [PCMA] G.711 A-Law
 [PCMU] G.711 Mu-Law
 [G729] G.729
For example, voip/codec/codec_info/0/name=G722.
Note: Specific codecs require specific firmware files. For
more information, refer to the Release Notes.
voip/codec/codec_info /%d/ptime
Length of the digital voice segment that each packet
holds. The default is 20 millisecond packets, excluding
G.723 which is 30 millisecond packets.
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).