3 channel on/off, 4 uniplayer link, Channel on/off – Speco Technologies DVR-T4IP User Manual
Page 81: Uniplayer link

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4.3.3 Channel
On/Off
After connected,
icon is changed to
icon. Under this status, if users push
icon, channel name & date displayed in front part of this screen will be phased out. Under
bad network transmission condition, if users use selected channel, pre-allocated channel
transmission will be better. If users enter this
icon again, entered channel will appear.
=> Channel number 2 was turn off.
4.3.4 UniPlayer
link
If you click this button on main menu, UniPlayer program will be executed.
Regarding the UniPlayer program, please refer to page 93