AddPac SOHO IP-PBX is a next-generation IP-PBX and a new IP telephony solution for all IP environments and traditional PSTN network. SOHO IP-PBX inter-works with various IP terminals of AddPac (e.g. AP-VP500, AP-VP300, AP-VP280, AP-VP250, AP-VP230, AP-VP150, AP-VP120 IP Video Phone, and AP-IP300, AP-IP160, AP-IP120, AP-IP90 IP Phone) to provide multimedia IP telephony services as well as the traditional Legacy PBX features. This SOHO IP-PBAX product is based on the advanced embedded RISC that enables firmware upgrade, and can be equipped with PSTN VoIP interfaces (FXO) depending on options. AddPac SOHO IP-PBX system is suitable for small companies, and inter-works with the VoIP and video products of AddPac Technology to provide a variety of IP application services appropriate for your network. Also, SOHO IP-PBX supports H.323 VoIP inter-working as well as SIP protocol for outbound call.