S50 is a compact and full-featured IP-PBX that comes in a 19’’ 1U rack-mountable chassis. The advanced module-based S50 is capable of supporting ISDN BRI, PSTN, and GSM connectivity, providing VoIP communications for up to 50 users.
SIP Ext.: max.50 Concurrent call: max.25 Analog Ports: max.8 FXS/FXO ports BRI Ports: max.8 BRI ports Storage: SD Card Expand Slot: Not support