D-Link partners with Globalgig to offer 4G LTE VoIP Router with 4G SIM card and $30 credit
4G/LTE Enterprise Router with VoIP (6300VNL) – BEConnected
Teltonika RUT240 Global LTE Router (RUT240 *7), 213,01 €
Amazon.com: 2-Port VoIP SIP Phone Adapter - GT202 Wireless Router, Supports WiFi Asterisk ATA VOS FXS Fax. Suitable for Home or Business (Black) : Office Products