midspan (CCTV) gen.

[Монги]

Контекст:

"Outdoor, IP66-rated, HDTV, day/night, fixed camera with varifocal 4-10 mm P-Iris lens and remote back focus (camera also supports DC-iris
lenses). Multiple, induvidually configurable H.264 and Motion JPEG streams; max 3MP resolution at 20 fps, or HDTV 1080p at 30 fps. Digital PTZ
support includes multi-view streaming of different view areas. WDR. Video motion detection and active tampering alarm. Two-way audio.
SD/SDHC memory card slot for optional local video storage. Operation in -30°C to +50°C when powered by IEEE 802.3af midspan or -40°C to
+50°C with AXIS T8123 High PoE Midspan. Includes a removable sunshield, wall bracket and 5-meter Ethernet cable. Midspan not included."

Вопрос:

как перевести "midspan" в этом случае?

Спасибо!

[abab]

Это блок питания
http://securtv.ru/catalogue/istochniki_pitaniya/newdiv_150332/catalogue_T8123-High-PoE-Midspan-1-port-5014-202.html