HUAWEI TE80 Videoconferencing Endpoint
Administrator Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 5-1 shows the cascading of VPM220s.
Figure 5-1 Cascading of VPM220s
Using the Stereo Mode
To obtain better stereo effect, configure the mode for cascading VPM220s and their positions
based on the actual conditions in your conference room.
Choose Advanced > Settings > Conference > Advanced and set the VPM220 mono or
stereo mode. Table 5-5 describes each mode.
Table 5-3 VPM220 mono and stereo modes
G.719, G.729A, G.711A/U, G.722, G.728, and G.7221C (at
any rate)
AAC-LD or HWA-LD when mono mode is enabled
AAC-LD or HWA-LD when stereo mode is enabled
When multiple VPM220s are cascaded or when a single VPM220 works in mono mode, all
the microphones in the VPM220 collect sounds. The VPM220 automatically transmits to the
endpoint the best quality sound collected by one of the microphones.
Figure 5-2 shows the application of left and right audio channels when a single VPM220
works in stereo mode.
L: The microphones are used to collect sounds for the left audio channel. R: The microphones are used
to collect sounds for the right audio channel. N: No microphone is used. (The Huawei logo on the
VPM220 should point to the display device.)
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