User's Manual

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 Password: Password provided by VoIP Provider.
 Contact: Contact user to use in an outbound call request through this trunk.
 Retry Interval: Once registration expired, retry interval is the number of seconds system will wait before
attempting to send another register request to the server.
 Trunk Type: In practical applications, client mode VoIP trunks are the most commonly used to connect to the
VoIP providers for low cost, long distance and international phone calls, while server mode is only used when
users want to do SIP trunking between IPPBXs.
 Registration Expiration: Expiration time of registration in seconds.
 Max Retry: Defines how many times the IPPBX system will attempt to register to the server before
permanently giving up.
More advanced settings.
 Fax Detection: Enable/disable fax detection on this trunk.
 Client URI: Client SIP URI used when attempting outbound registration (e.g.
SIP:[e-mail]:5060).
 Server URI: SIP URI of the server to register against (e.g. sip:sip.example.com:5060).
 AOR Contact: Address of records, it uses the same format as the client URI.
 Call Recording: Enable/disable call recording on this trunk. If enabled, all phone calls going in or out will all be
recorded.
 From User: Username to use in “From” header for sending outbound call requests to this trunk.
 DTMF Mode: Used to inform the system how to detect the DTMF key press. Choices are Inband, rfc4733, SIP
info and Auto.
 Outbound CID: The number you want to display to the called party while dialing out through this trunk. It
depends on the service provider whether it works or not.
 Qualify: Qualify will cause the server sending SIP OPTIONS command regularly to check that the device is still
online.
 Transport Protocol: To set the VoIP trunk to use UDP, TCP or TLS as the transport protocol, in most cases the