User`s manual

DVG-5121SP User’s Manual
D-Link Corporation
45
Session Timer: This setting can help to avoid excessive billing due to a dropped call.
Media Port Start: Enter the beginning of the listening port range.
Media Port End: Enter the end of the listening port range.
Transport: Select UDP or TCP from the drop-down menu.
SIP Time Interval: Enter the desired time interval which the VoIP telephone adapter will report to Proxy Server.
Timeout for Invite: The time for the server to invite the clients to connect.
Timeout for Ring Back: The time for ring back control while making a call.
Timeout for Release: The time for the VoIP telephone adapter to release from the server.
Registration Retry Count: Retry Count timing.
Registration Retry Interval: The time between each retry connection.
PING Interval: The time between ping packets.
SIP User Agent Name: The default setting is VOIP_Agent_001.
PRACK: The default setting for PRACK (Provisional Response Acknowledgement) is Disable.