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- Backup Communication – Useful as a failover in case VoIP or landline networks go down.
- Multi-SIM Support – Many GSM gateways support multiple SIM cards, ensuring continuous connectivity and load balancing.
On the other hand, for enterprises with large-scale analog infrastructure—like call centers, hotels, or large campuses—a 64 port FXS gateway offers a different kind of value. It provides 64 FXS (Foreign Exchange Subscriber) ports to connect analog devices (like phones and fax machines) to a VoIP network.