Use cheap, cert-locked ShoreTel/Mitel IP480 desk phones with any standard SIP PBX (3CX, FreePBX, Asterisk, FreeSWITCH). shorebridge emulates just enough of the ShoreTel switch to register the phones over TLS, defeats their firmware cert-pinning via CA injection, and B2BUAs calls to your PBX.
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Updated
Jun 10, 2026 - Python