{"id":22366,"date":"2026-04-23T06:58:42","date_gmt":"2026-04-23T06:58:42","guid":{"rendered":"https:\/\/rewamp.software-license-store.com\/?post_type=product&p=22366"},"modified":"2026-04-23T06:59:09","modified_gmt":"2026-04-23T06:59:09","slug":"yeastar-o2-module-2fxo-yst-o2","status":"publish","type":"product","link":"https:\/\/starmount.co.ke\/staging\/product\/yeastar-o2-module-2fxo-yst-o2\/","title":{"rendered":"Yeastar O2 Module (2FXO) YST-O2"},"content":{"rendered":"

What Is the Yeastar O2 Module?<\/h2>\n

To begin with, the Yeastar O2 Module<\/strong> is an add-on card designed to expand your Yeastar PBX system. Since it has 2 FXO ports<\/strong>, it lets you connect two analog telephone lines<\/strong> (PSTN) to your VoIP PBX. As a result, you can enjoy the benefits of VoIP while still<\/a> using traditional phone lines.<\/a><\/p>\n

Why Choose the O2 Module?<\/h2>\n

Because not all communication systems are fully digital yet, many businesses still rely on analog phone lines. Therefore, the O2 Module is a smart solution that lets you bridge your old and new systems. Also, it’s easy to install and works seamlessly with Yeastar S-Series<\/strong> and P-Series<\/strong> PBXs.<\/p>\n

Yeastar O2 Module Key Benefits<\/h2>\n

1. Two FXO Ports<\/strong><\/h3>\n

First of all, the module gives you two FXO ports<\/strong>. Because each port connects one analog line, this module supports two separate PSTN lines<\/strong>. So, you get added flexibility and backup options for your VoIP setup.<\/p>\n

2. Reliable PSTN Connectivity<\/strong><\/h3>\n

In case your internet goes down, PSTN lines can serve as a backup. Since the O2 Module connects analog lines to your PBX, it gives you failover protection<\/strong>. Also, you can route calls over the PSTN when your SIP trunks are offline.<\/p>\n

3. Seamless Integration with Yeastar PBXs<\/strong><\/h3>\n

Because it\u2019s made by Yeastar, the O2 Module works perfectly with Yeastar\u2019s systems. In fact, it\u2019s compatible with:<\/p>\n

    \n
  • \n

    Yeastar S20, S50, S100, S300 PBX<\/p>\n<\/li>\n

  • \n

    Yeastar P-Series appliances<\/p>\n<\/li>\n

  • \n

    Other models that support modular FXO cards<\/p>\n<\/li>\n<\/ul>\n

    Also, the module is hot-swappable, so you can install or remove it without shutting down the system.<\/p>\n

    4. Easy Setup and Management<\/strong><\/h3>\n

    Since Yeastar\u2019s interface is user-friendly, adding and managing the O2 Module takes only a few steps. So, even if you\u2019re not a tech expert, you\u2019ll find the process simple. Also, firmware updates and diagnostics can be done through the same web interface.<\/p>\n

    What Is an FXO Port?<\/h2>\n

    To make things clear, FXO (Foreign Exchange Office)<\/strong> ports connect analog phone lines<\/strong> to a PBX system. Because many businesses still use landlines, FXO ports let your IP PBX make and receive calls through traditional networks.<\/p>\n

    Also, FXO ports are different from FXS ports. While FXO connects to the phone company\u2019s line, FXS connects to analog devices like fax machines or desk phones.<\/p>\n

    Yeastar O2 Module; When to Use<\/h2>\n

    The O2 Module is great for:<\/p>\n

      \n
    • \n

      Businesses that want to keep using PSTN lines<\/p>\n<\/li>\n

    • \n

      Offices in areas with unreliable internet service<\/p>\n<\/li>\n

    • \n

      Hybrid setups with both VoIP and analog systems<\/p>\n<\/li>\n

    • \n

      Companies wanting backup options in case of internet failure<\/p>\n<\/li>\n<\/ul>\n

      So, if you need flexibility and reliability, the O2 Module is the right tool.<\/p>\n

      Yeastar O2 Module Features at a Glance<\/h2>\n

      Here\u2019s a quick look at what the Yeastar O2 Module (YST-O2)<\/strong> offers:<\/p>\n

        \n
      • \n

        2 FXO ports for analog PSTN line connection<\/p>\n<\/li>\n

      • \n

        Easy plug-and-play installation<\/p>\n<\/li>\n

      • \n

        Hot-swappable for quick upgrades or maintenance<\/p>\n<\/li>\n

      • \n

        Fully compatible with Yeastar S- and P-Series PBXs<\/p>\n<\/li>\n

      • \n

        Enables PSTN failover or backup call routing<\/p>\n<\/li>\n

      • \n

        Supports advanced call handling features<\/p>\n<\/li>\n

      • \n

        Compact and modular design<\/p>\n<\/li>\n<\/ul>\n

        Installation Made Easy<\/h2>\n

        Because the O2 Module is modular, it fits right into an open slot in your Yeastar PBX. First, power off the unit if not hot-swapping. Then, insert the module firmly into the FXO slot. After that, power the system on and access the admin dashboard. Also, from there you can configure your analog lines quickly.<\/p>\n

        Real-World Use Cases<\/h2>\n

        Here are some examples of how businesses use the Yeastar O2 Module:<\/p>\n

          \n
        • \n

          Retail stores<\/strong> use analog lines for security system monitoring and backup voice lines.<\/p>\n<\/li>\n

        • \n

          Medical clinics<\/strong> rely on PSTN as a fallback during internet outages.<\/p>\n<\/li>\n

        • \n

          SMBs<\/strong> use PSTN lines for fax or credit card machines.<\/p>\n<\/li>\n

        • \n

          Call centers<\/strong> balance SIP traffic with analog call routing.<\/p>\n<\/li>\n<\/ul>\n

          So, no matter your size or industry, the O2 Module adds value to your communication setup.<\/p>\n

          Yeastar Quality You Can Trust<\/h2>\n

          Because Yeastar is a global leader in VoIP technology, every product is tested for quality and performance. Also, Yeastar provides regular firmware updates and strong technical support. So, when you choose the O2 Module, you’re choosing reliability.<\/p>\n

          Order Yours Today<\/h2>\n

          Finally, if you\u2019re looking for a way to keep your analog lines connected to your VoIP system, the Yeastar O2 Module (YST-O2)<\/strong> is the perfect solution. Because it\u2019s affordable, reliable, and easy to install, it\u2019s the smart choice for any growing business. So, order now and upgrade your PBX the right way.<\/p>\n

          \"Yeastar<\/p>\n","protected":false},"excerpt":{"rendered":"

          O2\u00a0 (2FXO) Module YST-O2<\/h1>\n","protected":false},"featured_media":22421,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[513],"product_cat":[509],"product_tag":[528,531,532,529,530],"class_list":["post-22366","product","type-product","status-publish","has-post-thumbnail","product_brand-yeastar","product_cat-s-series-voip-modules","product_tag-yeastar-mypbx-kenya","product_tag-yeastar-o2-module-2fxo-yst-o2-kenya","product_tag-yeastar-o2-module-2fxo-yst-o2-price-in-kenya","product_tag-yeastar-pbx","product_tag-yeastar-telephone-systems","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nYeastar O2 Module (2FXO) YST-O2 Best Price in Kenya | Starmount<\/title>\n<meta name=\"description\" content=\"Starmount Staging are Dealers in genuine products like Yeastar O2 Module (2FXO) YST-O2. 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