Modular GSM Gateways ranging from 4 up to 72 GSM channels, developed for interconnecting a wide selection of interfaces and signaling protocols, including ISDN BRI, E1/T1 PRI, SIP & H.323, to the GSM cellular networks to quickly reduce telecommunication expenses and maximize cost-savings. GSM Gateways enable to capitalize on cheaper call routing alternatives available through Fixed-Mobile Convergence (FMC) and smart Least Cost Routing (LCR). The GSM Gateway series from Hypermedia is ideal for enterprises and service providers alike. Hypermedia SMS Gateway Pro A cost-effective alternative to voice communication > Professional, in-house, autonomous SMS Gateway hardware device SIM-based platform designed for 2-way SMS messaging directly via the cellular networks to and from any authorized SMS client.