The Grandstream GXW4248 V1 is a 48-port Analog VoIP Gateway, allowing any business to create a cost-effective hybrid IP and analog telephone solution that enables them to enjoy the benefits of VoIP communications while preserving investment on existing analog phones, fax machines and legacy analog devices. This guide is designed to help you use some of the most popular features with your new Grandstream GXW4248 V1.