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Yeastar O2 – 2 FXO Ports is a professional expansion model designed specifically for Yeastar IP PBX systems<\/a>, an ideal solution for businesses wanting to move to a VoIP environment without losing connectivity to the public network. <\/p>\n The Yeastar O2 – 2 FXO Ports allow calls to be made and received from analog lines via the Yeastar system, with full support for all advanced central station features such as IVR<\/a>, call transfer, call recording, queues, and ringing groups. <\/p>\n It also helps minimize communication costs by using local lines for long-distance communications when needed.<\/p>\n Central PBX expansion<\/a> modules feature easy Plug & Play installation within compatible Yeastar devices, and are automatically recognized via the Web GUI management interface, making it easy to set up and manage without technical complexity. <\/p>\n It also offers stable performance and high sound quality, making it suitable for use in work environments that rely on constant communication. <\/p>\n Yeastar O2-2 FXO Ports are an ideal choice for offices, businesses, clinics, small hotels, and organizations that need to integrate analog lines with modern communication systems efficiently and flexibly. <\/p>\n Yeastar O2 is a compact expansion model that has two RJ11 FXO ports to connect public analog telephone lines (PSTN\/POTS) to Yeastar’s VoIP PBX systems, enabling hybrid switching without replacing legacy infrastructure. <\/p>\n Compatible with S-Series<\/a> (S20, S50, S100, S100, S300, S412) and P-Series (P550, P560, P570), YST-EX08 is required for some models such as S100\/S300, with technical features including 15-50 Hz ringing frequency detection, 30+ VRMS ringing voltage detection by FXO mode, PSTN line termination, G.168 echo cancellation, and multiple signaling modes: Foreign Exchange Office (two-way PBX connection), Foreign Exchange Station Defined Network (carrier access), and Private Line Automatic Ringdown (PLAR) for direct connections. <\/p>\n Featuring easy installation inside a PBX, support for Asterisk-compatible SIP\/IAX2 protocols, QoS, VLAN, TLS\/SRTP security, DTMF (RFC2833\/In-band), Caller ID (DTMF\/FSK), and call drop methods (Busy Tone, Polarity Reversal), making it ideal for SMBs that need analog extensions with advanced VoIP features like intelligent registration and routing without additional costs. <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Yeastar O2-2 FXO Ports is designed to terminate analog PSTN lines, compatible with S20<\/a>, S50, S100, S300, S412, P550, P560<\/a>, P570<\/a>, supports ring detection (15-50 Hz), ring voltage (30+ VRMS), echo cancellation, and FXO\/FXS-DN\/PLAR signaling. Provides reliable connectivity for external calls with SIP support and easy in-center management. <\/p>\n","protected":false},"featured_media":18993,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[1620],"product_cat":[1519,1513],"product_tag":[],"class_list":{"0":"post-21649","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-yeastar-products","7":"product_cat-ip-pbxs-and-gateways","8":"product_cat-pbx-modules","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product\/21649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/comments?post=21649"}],"version-history":[{"count":1,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product\/21649\/revisions"}],"predecessor-version":[{"id":21707,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product\/21649\/revisions\/21707"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/media\/18993"}],"wp:attachment":[{"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/media?parent=21649"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product_brand?post=21649"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product_cat?post=21649"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/saudiavtech.com\/en\/wp-json\/wp\/v2\/product_tag?post=21649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Yeastar O2 expansion module integration – 2 FXO Ports<\/h2>\n