Contacts/Phonebook on Cisco 7900 series

FreePBX Endpoints
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7

chan_sccp works on FreePBX 16 check this out:

Guide to installing chan_sccp and SCCP Manager on FreePBX 16 - FreePBX / Tips and Tricks - FreePBX Community Forums

chan_sccp actually will compile and install on Asterisk 21 There are patches in the github for it. It might even compile on Asterisk 22. But I don’t know if it will work on newer Asterisk versions