Grandstream, Yealink, Cisco, Digium, Polycom
Polycom CX5100 VoIP CX5100 Conference Station for MS Lync, USB only. Camera & Power Cord included
The Linux-based GXP2130 is a standard enterprise-grade IP phone that features up to 3 lines, 4 XML programmable soft keys, 8 programmable BLF extension keys, dual Gigabit network ports, and 4-way voice conferencing
GXP2135 VoIP SIP telephone, 2 x Gigabit Ethernet, 8 x line keys, AC + PoE, 2.8 inch colour TFT LCD.