Grandstream UCM6308 IPPBX Support up to 1500 Users and 200 Concurrent calls
Supports 4 lines, 4 SIP accounts and 5-way voice conferencing
HD audio on speakerphone and handset, 5 programmable context-sensitive soft keys
Compatible with GXP2200 LCD extension module (GXP2200 EXT)
Supports 6 lines, 6 SIP accounts and 5-way voice conferencing
4.3 inch (480×272) color-screen LCD
Dual Gigabit ports, integrated PoE
HD audio on speakerphone and handset, 5 programmable context-sensitive soft keys
GXV3610_HD: 1.2 megapixel Progressive Scan CMOS image sensor, 720p resolution, 3.6mm lens
GXV3610_FHD: 3.1 megapixel Progressive Scan CMOS image sensor, 1080p resolution, 3.6mm lens
Advanced multi-streaming rate real-
128×384 backlit LCD display
20 programmable dual-color buttons per module, 2 pages per module (40 contacts total)
BLF/speed dial
Daisy-chain up to 4 modules for up to 160 contacts/extensions
BLA (bridged line appearance)/SC
Hikvision DS-2CE10DF3T-PFS | 2MP ColorVu outdoor Audio Full Time 24/7 ColorVu Turret Camera-3.6mm 
18 Zones Walk through Metal Detector-LCD 
