These devices connect GSM or UMTS (3G) cellular networks to Voice over IP (VoIP) networks, allowing you to make and receive calls using both infrastructures. Here are some key features of the TG series: Connects Cellular and VoIP Networks: The TG series bridges the gap between traditional cellular phone networks and VoIP systems, enabling two-way communication between them. Cost Savings: By utilizing SIP trunking and mobile-to-mobile calls, you can potentially reduce your phone bills. Backup Solution: The device can serve as a backup in case your landline goes down, ensuring uninterrupted communication. Easy to Use: The web-based management interface simplifies setup and configuration. Multiple Models: There are various models available, with the number of GSM/UMTS ports ranging from 1 to 16, depending on your needs. Some additional things to consider: Not for 4G/LTE (except higher models): The base TG100 model doesn't support 4G LTE connectivity, but higher-end models do. Supported Protocols and Codecs: The TG series supports standard VoIP protocols like SIP and IAX2, along with various voice codecs for efficient call quality. VoIP Gateway Features at A Glance
