AB-COM IPBox 250S PVR User Manual - page 36
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11.9 Premiere Multifeed function
When you move to ‘main feed’ and press the audio button
on the remote controller twice,
then Multifeed List (channels) will appear.
11.10. OSD teletext.
OSD teletext is available if served. If the teletext icon on Info Bar is high-lighted in yellow, press this
button to see the teletext information.