Olutions to manage their telephony systems. This is where GSM gateways come into play. A GSM gateway bridges GSM mobile networks with IP-based systems such as VoIP or PBX, allowing businesses to make and receive calls through mobile networks using SIM cards. https://www.bulbapp.com/u/upgrade-your-system-with-reliable-8-16-4-port-gsm-gateways?sharedLink=00181609-6b98-4c11-af93-8d488a6680a1