Based on this product's specifications, here are some alternatives and similar models
VoIP Gateway Unify Mediatrix C710 8 Ports L30220-D600-A216
Summary description:
Unify Mediatrix C710 is an 8-port VoIP gateway (model L30220-D600-A216) designed to connect multiple analog or digital telephony lines to IP networks. It provides centralized VoIP interconnection for small to medium business telephony systems, enabling SIP trunking, call routing, and integration with PBX equipment. Suitable for office deployments requiring reliable voice transport and centralized management.