H4

Quick Boot Energy-saving mode 6 Parties conference 3 Line Key WIFI 802.11 b/g/n HD voice 4 SIP Line Back light. Opus+IPV6. PSU POE & Gigabit

Good Margin HD Voice 16 SIP Lines 4 Line Key 30 DSS Keys IPV6/OPUS 3.5»+2.4» Dual Color Screen WIFI & Built-in Bluetooth POE +Gigabit PSU

Wall bracket accessory Good for X1S/X1SP/X3S V2/X3SP V2，X3U