Multifunction intercom server. Allows to manage up to 1000 SIP extensions. Advanced functions (call groups, call zones, paging groups, conference, etc.). Audio and video backup. SIP Trunk (interconnection of 2 SIP systems). Castel technical support contract available for 2 years to the final client (free the first year - material warranty - and service fee the second year). H 43 mm x W 426 mm x D 356 mm (rackable 1U black metallic case).