{"id":6111,"date":"2021-12-02T16:43:59","date_gmt":"2021-12-02T14:43:59","guid":{"rendered":"https:\/\/nsys.org.gr\/product\/grandstream-gbx20-extension-module-for-grp2615-gxv3350\/"},"modified":"2026-03-31T13:51:10","modified_gmt":"2026-03-31T10:51:10","slug":"grandstream-gbx20-extension-module-for-grp2615-gxv3350","status":"publish","type":"product","link":"https:\/\/nsys.gr\/en\/product\/grandstream-gbx20-extension-module-for-grp2615-gxv3350\/","title":{"rendered":"Grandstream GBX20 Extension Module for carrier-grade IP phones"},"content":{"rendered":"<p>The GBX20 is an Extension Module that adds functionality, versa tility and flexibility to Grandstream\u2019s GRP2615 Carrier-Grade IP Phone and GXV3350 IP Video Phone. It f eatures a 272&#215;480 LCD display that offers up to 40 contacts per module with support for up to 160 contact s by using 4 modules. The GBX20 supports a wide-range of advanced call features including BLF, call park \/pick-up, speed-dial, presence, intercom, voice conferencing transfer\/forward and much more. An ideal sol ution for businesses and receptionists managing high call volumes, the GBX20 ensures maximum productiv ity by efficiently monitoring and dispatching incoming calls.<\/p>\n<ul>\n<li>4.3 inch (272&#215;480) TFT color LCD<\/li>\n<li>20 per page (each module contains 2 pages, for up to 40 lines per module<\/li>\n<li>Combine up 4 daisy-chained modules for 160 contacts\/extensions<\/li>\n<li>BLF, call park \/pick-up, speed-dial, presence, intercom, voice conferencing transfer\/forward and more<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The GBX20 is a backlit LCD extension module supported by the <a href=\"https:\/\/nsys.gr\/product\/grandstream-grp2615-10-line-carrier-grade-ip-phone\">GRP2615<\/a>, <a href=\"https:\/\/nsys.gr\/product\/grandstream-grp2624-8-line-professional-carrier-grade-ip-phone\">GRP2624<\/a> <a href=\"https:\/\/nsys.gr\/product\/grandstream-grp2650-14-line-professional-carrier-grade-ip-phone\">GRP2650<\/a>, <a href=\"https:\/\/nsys.gr\/product\/grandstream-grp2670-12-line-professional-carrier-grade-ip-phone\">GRP2670<\/a> carrier-grade IP phones as well as and GXV3350 and <a href=\"https:\/\/nsys.gr\/product\/grandstream-gxv3450-integrated-video-communications-solution\">GXV3450<\/a> IP video phones. The module includes 20 dual-colored extension keys and 2 arrow keys for page switching (allowing each GBX20 to support up to 40 contacts\/extensions.). Connect up to 4 GBX20 modules to compatible Grandstream phones for a total of 160 contacts\/extensions.<\/p>\n[button et_class=\"\" target=\"_blank\" style=\"medium white\" url=\"https:\/\/nsys.com.gr\/data\/grandstream\/GBX20.pdf\" icon=\"\" title=\"DATASHEET\"]\n","protected":false},"featured_media":15767,"template":"","meta":[],"etheme_brands":[{"term_id":175,"name":"Grandstream Networks","slug":"grandstream-networks","term_group":0,"term_taxonomy_id":175,"taxonomy":"brand","description":"","parent":0,"count":189,"filter":"raw"}],"product_brand":[],"product_cat":[713,93,723,715,126],"product_tag":[],"class_list":{"0":"post-6111","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"brand-grandstream-networks","7":"product_cat-grandstream","8":"product_cat-ip-phones","9":"product_cat-grandstream-ip-phones","10":"product_cat-grandstream-unified-communications","11":"product_cat-telephony","13":"first","14":"onbackorder","15":"taxable","16":"shipping-taxable","17":"purchasable","18":"product-type-simple"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/product\/6111","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/media\/15767"}],"wp:attachment":[{"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/media?parent=6111"}],"wp:term":[{"taxonomy":"brand","embeddable":true,"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/etheme_brands?post=6111"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/product_brand?post=6111"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/product_cat?post=6111"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/nsys.gr\/en\/wp-json\/wp\/v2\/product_tag?post=6111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}