IP/Wifi IP Video Server One channel CIF, one channel D1,2 channels CIF, 2 channels D1, 4 channels CIF,4 channels D1 IP/Wifi IP Video Server 1/2 channels optional AESUN Optional model: One channel CIF, one channel D1,2 channels CIF, 2 channels D1, 4 channels CIF, 4 channels D1 Optional modules: Low-power WiFi module ( 0 - 100m ) High-power WiFi module ( 0 - 2km ) Wireless 3G module (EVDO/WCDMA/TD- ...