Yeastar P550 P-Series 50 User IP PBX Without Module

Product Description
Users: Max. 50
Max Concurrent Calls: Max. 25
Max Analog Ports: max. 8 FXS/FXO ports by modules
Max BRI Ports: max. 8 BRI ports by modules
Max GSM Ports: max. 4 GSM ports by modules.
Max E1/T1/J1 Ports: N/A
Expansion Board: N/A
External Storage: USB (Not included)