Aastra AastraLink Pro 160 Administrator's Manual page 189

The parameters you can specify for SIP Trunking are:
• Use Local Network Address
Enables/disables SIP trunking to use the local subnet address for the SIP
signalling rather than the external (UPnP / external gateway) address. It is
only necessary to set this value if the SIP registrar / outbound proxy is
multi-homed on both the private and the public network.
• Send NAT Keep-Alives
Enables/disables the sending of SIP OPTIONS messages to periodically
maintain the UDP port binding in the NAT.
• Relaxed Authentication
Enables/disables authentication of incoming SIP INVITE's and matching of
peers based on IP address without examining the port number.
• Registrar Server
Supplied by your service provider. Specifies the IP address of the remote
endpoint (service providers registrar server) that connects the AastraLink Pro
160 to your service provider SIP network.
• Registrar Port
Supplied by your service provider. Specifies the port number of the remote
device (registrar server) on which SIP communications are received. By
default this is set to 5060.
• Username (Outgoing Caller ID)
Supplied by your service provider. A name (or phone number) you use to
connect to the service provider network that displays on the caller's outgoing
phone. For example: 6174365000.
If provisioned, the specified Caller ID is used to override the default FROM:
address in the SIP signalling. Refer to
page
• Display Name (Incoming Caller ID)
Overrides Caller ID on incoming calls. A call originating externally, coming
in over a trunk with "Display Name" set, has its Caller ID information
overwritten and displays on local SIP phones as this value.
41-001190-02 Rev. 01, Rel. 1.2
Configuring AastraLink Pro 160 System and Network Parameters
4-78.
Configuring VoIP Settings
"Called party identification" on
4-79