OptionalcodecCodec to negotiate. Defaults to OPUS/16000.
OptionalignoreSkip TLS cert validation (sandbox/test only — never in production).
SIP authorization id (the device's RingCentral authorization id).
SIP domain (e.g. sip.ringcentral.com).
SIP outbound proxy (host:port, e.g. sip10.ringcentral.com:5096).
SIP auth password (resolved upstream — never inlined).
SIP auth username (the device's phone number / extension).
RingCentral SIP softphone telephony binding configuration.