Currently running version 14 and trying to receive a standard fax but am unable to. All my searching leads to old unsupported solutions. Any help would be appreciated in how to accomplish this.
== Redirecting ‘SIP/xx.xxx.xx.xx-00001602’ to fax extension due to CNG detection
[Oct 19 14:49:53] ERROR[C-0000e8c0]: res_fax.c:1175 fax_session_reserve: Could not locate a FAX technology module with capabilities (RECEIVE)
[Oct 19 14:49:53] ERROR[C-0000e8c0]: res_fax.c:2222 receivefax_exec: Unable to reserve FAX session.
== Spawn extension (inbound, fax, 4) exited non-zero on ‘SIP/xx.xxx.xx.xx-00001602’