Other 911 SIP configurations and supported methods
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Molly Katolas
SIP REFER is not supported. Please use SIP REINVITE instead.
REGISTRATIONS should be turned off.
USERNAME/PASSWORD should be turned off, as they're not required and may hinder functionality.
OPTIONS MESSAGES is supported but shouldn't be sent more than once in a 60-second period.
For more information, please see our 911 integration guide.
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