Answer / mandeepmansha

OpenBTS (Open Base Transceiver Station) is a software-based
GSM access point, allowing standard GSM-compatible mobile
phones to make telephone calls without using existing
telecommunication providers' networks.

Answer / prashansa

OpenBTS is a GSM network-side protocol "stack" with a SIP
network interface and integrated radio resource management
functions. In its simplest form, OpenBTS allows GSM handsets
to be used as extensions in a SIP-capable VoIP PBX.

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