{"product_id":"grandstream-gbx20-expansion-module","title":"Grandstream GBX20 Expansion Module","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Grandstream GBX20 is a programmable key expansion module built for receptionists and high-call-volume users who need to manage more lines than a standard phone display allows. It attaches directly to compatible Grandstream desk phones.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFeatures include:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e4.3\" color LCD with 20 keys per page\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUp to 40 contacts per module, 160 with 4 daisy-chained modules\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBLF, call park\/pickup, and speed dial support\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePowered through the host phone\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAutomatic firmware updates via host phone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eManage more extensions at a glance with the GBX20.\u003c\/p\u003e","brand":"Grandstream","offers":[{"title":"Default Title","offer_id":50260156776685,"sku":null,"price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/0529\/6621\/files\/shopify_product_template_2000px_0012_GBX20-1.jpg?v=1783568243","url":"https:\/\/store.spectrumvoip.com\/products\/grandstream-gbx20-expansion-module","provider":"SpectrumVoIP","version":"1.0","type":"link"}