D-Link DVG-2001S User Parameter Phone, Caller ID Delivery, Display CID, Timer T2, Session Expires

	Select TEL-URLto have the router use the SIP number
	without a domain name in the SIP messages that it sends.
User Parameter Phone	You can set this to Enabled or Disabled. This determines
	whether or not the phone number is appended to the
	information forwarded to your SIP server. Your VoIP service
	provider will instruct you on which setting to use.
Caller ID Delivery	You can set this to YES or NO. This determines whether
	CID is received.
Display CID	You can set this to Enabled or Disabled. This determines
	whether to display Caller ID.
Timer T2	Use the drop-down menu provided to select the desired time
	increment.
Initial Unregister	You can set this to Enabled or Disabled. The default is
	Enabled.
Register Expiration	Use this field to set how long the router will wait before
	sending a repeat registration request if a registration attempt
	fails or there is no response from the registration server.
Session Expires	This field will set the longest time that the router will allow a
	SIP session to remain idle (without traffic) before dropping it.
Min-SE	When two SIP devices negotiate a SIP session, they must
	negotiate a common expiration time for idle SIP sessions.
	This field sets the shortest expiration time that the router will
	accept. The router checks the session expiration values of
	incoming SIP INVITE requests against the minimum session
	expiration value that you enter here. If the session expiration
	of an incoming INVITE request is less than this value, the
	router negotiates with the other SIP device to increase the
	session expiration value to match the minimum session
	expiration value.

Session Expires Refresher This determines which side of an expired call session will initiate the session refresh. uac – specifies the Caller side will initiate the session refresh. uas – specifies the Call receiver (the “Callee”) will initiate the session refresh..

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