ShoreTel SG-50
Shoretel ShoreGear 50 Voice Switch SG-50 ST001 600-1041-06
The ShoreTel ShoreGear 50 is a voice switch that supports up to 50 IP phones and up to a maximum of six analog ports (four loop start trunk and two analog extension ports). It supports ShoreTel IP phones, softphones, and SIP devices.