User Guide

40
R27A/V
Admin Guide
4.2.6. Codec
Go to Account - Advanced to configure SIP call related codec.
Sip Account: To choose which account to configure.
Audio Codec: R27 support four audio codecs: PCMA, PCMU,
G729, G722. Different audio codecs require different bandwidth,
users can enable/disable them according to different network
environment.
Note: Bandwidth consumption and sample rates are as below:
Codec
Bandwidth
Sample Rates
PCMA
64kbit/s
8kHz
PCMU
64kbit/s
8kHz
G729
8kbit/s
8kHz
G722
64kbit/s
16kHz
Video Codec: R27 support H.264 standard, which provides better
video quality at substantially lower bit rates than previous
Figure 4.2.6-1 SIP call related codec