![2N 1120101B Скачать руководство пользователя страница 10](http://html.mh-extra.com/html/2n/1120101b/1120101b_user-manual_439854010.webp)
4
5 Desktop Installation
5.1 PoE and Use of External Power Adapters
The device supports two power supply modes: power supply from an external power
adapter and via an Ethernet (PoE) complied switch.
The PoE power supply saves space and cost of additional power outlet provision. With a
PoE switch, the device can be powered through a single Ethernet cable, which is also
used for data transmission. By attaching a UPS system to the PoE switch, the device can
keep working at power outages just like traditional PSTN telephones powered by the
telephone line.
For the users who do not have PoE equipment, a traditional power adapter should be
used. If the device is connected to a PoE switch and power adapter at the same time, the
power adapter will be prioritized and the PoE power supply will be used as backup.
Please use the power adapter / PoE switch that meets the specifications to ensure that
the device works properly.