Avaya XT Series XT5000 Series XT4000 Series User Manual page 17

You can add a license to most XT Series models to activate the built-in MCU to host
videoconferences locally (see Deployment Guide for Avaya XT Series):
• MCU4 can host videoconferences with up to four participants (one local, three remote), with
additional calls (up to eight) being placed in audio-only mode.
• MCU9 can host videoconferences with up to nine participants (one local, eight remote).
Important:
The Avaya XTE240 and Avaya XT4300 can host up to four video participants.
The embedded MCU can mix standard definition and HD endpoints in the same meeting, without
one impacting on the other. The built-in MCU also supports both wide-screen (16:9) and standard
formats (4:3), incorporating them seamlessly into the video layout. In order to conserve bandwidth,
you can limit the number of participants that the embedded MCU can host.
While generating the video layout, the built-in MCU must shrink each participant's image to fit the
layout. So while the composite video layout remains in HD, each participant's image within the
layout can reach a maximum resolution of 448p.
When using the XT Series as an MCU only, not participating locally, we recommend blocking the
audio and video input from this XT Series during the meeting. You can do this by enabling privacy
settings. You can block the audio and video input completely or you can ensure that only users
with a PIN can access the audio and video.
For the best experience when using the XT Series MCU Edition, we recommend activating the
license known as Maximum bandwidth extension (12Mbps total for all participants) to avoid
sending video at the default lower 6Mbps total for all participants (see Deployment Guide for
Avaya XT Series).
You can disable the embedded MCU at any time.
Related links
About the XT Series
June 2019
on page 7
Avaya IX Video Conferencing XT Series User Guide
Comments on this document? infodev@avaya.com
About the Built-In MCU
17