Grandstream Networks DP710 manual Min-SE, Caller Request Timer, Callee Request Timer, Force Timer

		Session Expiration is the time (in seconds) at which the session is considered timed out,
		provided no successful session refresh transaction occurs beforehand. The default value
		is 180 seconds.
	Min-SE	Defines the minimum session expiration (in seconds). Default is 90 seconds.
	Caller Request Timer	If set to “Yes”, the phone will use session timer when it makes outbound calls if remote
		party supports session timer.
	Callee Request Timer	If selecting “Yes”, the phone will use session timer when it receives inbound calls with
		session timer request.
	Force Timer	If set to “Yes”, the phone will use session timer even if the remote party does not support
		this feature. If set to “No”, the session timer is enabled only when the remote party
		supports this feature. To turn off Session Timer, select “No” for Caller Request Timer,
		Callee Request Timer, and Force Timer.
	UAC Specify Refresher	As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or
		proxy server as the refresher.
	UAS Specify Refresher	As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use the
		phone as the refresher.
	Force INVITE	Session Timer can be refreshed using INVITE method or UPDATE method. Select “Yes”
		to use INVITE method to refresh the session timer.
	Enable 100rel	PRACK (Provisional Acknowledgment) method enables reliability to SIP provisional
		responses (1xx series).
		Codec Configuration
	Preferred Vocoder	The DP715 supports up to 6 different Vocoder types including G.711 A-/U-law, G.726-32 ,
		G.723.1, G.729A/B and iLBC. The user can configure Vocoders in a preference list that
		will be included with the same preference order in SDP message. The first Vocoder is
		entered by choosing the appropriate option in “Choice 1”. The last Vocoder is entered by
		choosing the appropriate option in “Choice 6”.
	VAD	Default is No. VAD allows detecting the absence of audio and conserves bandwidth by
		preventing the transmission of “silent packets” over the network.
	Jitter Buffer Type	Select either Fixed or Adaptive based on network conditions.
	Jitter Buffer Length	Select Low, Medium, or High based on network conditions.
	SRTP Mode	Secure RTP protocol used for media transmission over VoIP. Disabled by default. Other
		modes are: enabled but not forced & enabled and forced.
	G723 Rate	This defines the encoding rate for G723 vocoder. Default setting is 6.3kbps.
	Use First Matching	Default is No. If set to “Yes”, device will include only the first match vocoder in its 200OK
	Vocoder in 200OK SDP	response, otherwise it will include all match vocoders in same order received in INVITE.
	iLBC Frame Size	This sets the iLBC size in 20ms or 30ms
	iLBC Payload Type	Defines payload type for iLBC. Default value is 97. The valid range is between 96 and
		127.
	Voice Frames per	This field contains the number of voice frames to be transmitted in a single packet. When
	Packet	setting this value, the user should be aware of the requested packet time (used in SDP
		message) as a result of configuring this parameter. This parameter is associated with the
		first vocoder in the above vocoder Preference List or the actual used payload type
		negotiated between the 2 conversation parties at run time.
		Default is 2, up to 10/20/32/64 for G711/G726/G723/other codecs respectively)
	Symmetric RTP	Default is No. When set to “Yes” the device will change the destination to send RTP
		packets to the source IP address and port of the inbound RTP packet last received by the
		device.
Firmware version 1.0.0.8		DP715/DP710 User Manual	Page 45 of 52