Many SIP clients require to be registered (logged in) before being able to make calls. By default, any REGISTER request to the gateway will be rejected.
accept-sip-reg entry defines whether to accept incoming SIP REGISTER requests or not (acting as SIP registrar).
accept-sip-reg = yes # no to disable
Configuration 5: Enabling/disabling SIP registration
When the Telepresence system is behind a SIP registrar (e.g. Asterisk) then, this configuration entry is useless as the REGISTER requests will not be forwarded to the MCU.
See also: