D-Link DVG-3104MS - VoiceCenter PSTN Gateway User Manual page 24

Section 3 - Configuration
Session Expires:
The time interval in which the Gateway periodically refreshes SIP sessions by sending repeated INVITE or Update request,
depending on session type.
Register Expires:
Timer for re-registration.
UDP Time Out:
Timeout for an INVITE request (it is set as 100 - 3000 msec.).
UDP Retry Times:
The number of times to send INVITE requests.
Enable PRACK:
Ensures correct signal transmissions.
Anonymous:
This is an advanced VoIP function that lets you decide whether you want to block your phone number or not from showing
on the receiver's phone.
Anonymous Reject:
Anonymous Callers Rejection is an advanced VoIP function that rejects callers with anonymous name/phone number
automatically.
Redundancy
Enable or Disable the redundancy package. It is an additional function for some VoIP platforms which supplies the Redundancy
Package:
Package feature. Generally, selecting Disable can properly work with most VoIP platforms.
Apply:
Click Apply to update the settings.
D-Link DVG-3104MS User Manual 4