Purpose:
A
GSM Gateway (also called a SIM Box) is a device that connects a VoIP network or traditional telephony system to the GSM mobile network. It allows calls to be routed through mobile SIM cards.
Functions:
Call Routing: Converts VoIP or landline calls into GSM network calls.
Cost Optimization: Reduces call costs by leveraging local mobile rates instead of international or inter-network tariffs.
SMS Gateway: Some GSM Gateways also support sending and receiving SMS messages.
Use Cases:
GSM Gateways are often used in call centers, businesses with high call volumes, or by telecom companies for Least Cost Routing (LCR). However, they are sometimes associated with SIM card fraud or gray routing practices.
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