Grandstream Networks DP710 Allow Incoming SIP, Messages from SIP, Proxy Only, SIP T1 Timeout

Allow Incoming SIP	Default is No. Check the incoming SIP messages. If they don’t come from the SIP proxy,
Messages from SIP	they will be rejected. If this option is enabled, the device will not be able to make direct IP
Proxy Only	calls.
SIP T1 Timeout	T1 is an estimate of the round-trip time between the client and server transactions.
	If the network latency is high, select larger value for more reliable usage. Default is 0.5
	Sec.
SIP T2 Interval	Maximum retransmission interval for non-INVITE requests and INVITE responses. Default
	is 4 Sec.
DTMF Payload Type	Sets the payload type for DTMF using RFC2833. Default is 101.
Preferred DTMF method	The DP715 supports up to 3 different DTMF methods including in-audio, via RTP
	(RFC2833) and via Sip Info using SIP INFO messages. The user can configure DTMF
	method in a priority list.
Disable DTMF	Default is No. If set to yes, use above DTMF order without negotiation
Negotiation
Send Hook Flash Event	Default is No. If set to yes, flash will be sent as DTMF event.
Enable Call Features	Default is Yes. (If Yes, call features using star codes will be supported locally)
Proxy-Require	SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
Use NAT IP	NAT IP address used in SIP/SDP message. Default is blank.
Use SIP User-Agent	Used to replace the SIP User-Agent Header. Default is NO.
Header
Ring Timeout	Default value is 60 Sec. Incoming call will stop ringing when not picked up given a specific
	period of time.
Hunting Group Ring	Default value is 20 Sec. If call is not answered within this designated time period, the call
Timeout	will be forwarded to the next member of a Hunt Group.
Hunting Group Type	Linear, parallel and Shared line.
	 Linear style will sort the call to the lowest-numbered available line; this is also
	called “serial hunting”.
	 Parallel Style will ring all the handsets on incoming calls.
	 Shared line Style will ring all the handsets on incoming calls, any handset
	member of the same hunt group that try to dial out while there is an ongoing call
	it will be automatically conference in the ongoing call.
Delayed Call Forward	Default value is 20 seconds. In case this feature activated using * codes (*92 code), the
Wait Time	call will be forwarded after this preconfigured amount of time.
No Key Entry Timeout	Default is 4 seconds. Dialing process is completed and outgoing call is initiated if no key
	entry occurs during this preconfigured interval.
Early Dial	Default is No. Use only if proxy supports 484 response. This parameter controls whether
	the phone will send an early INVITE each time a key is pressed when a user dials a
	number. If set to “Yes”, an INVITE is sent using the dial-number collected thus far;
	Otherwise, no INVITE is sent until the “(Re-)Dial” button is pressed or after about 5
	seconds have elapsed if the user forgets to press the “Re-Dial” button.
	The “Yes” option should be used ONLY if there is a SIP proxy configured and the proxy
	server supports 484 Incomplete Address response. Otherwise, the call will likely be
	rejected by the proxy (with a 404 Not Found error).
	This feature does NOT work with and should NOT be enabled for direct IP-to-IP calling.
Dial Plan Prefix	Sets the prefix added to each dialed number.
Use # as Dial Key	Default is Yes. It allows users to configure the “#” key as the “Send” (or “Dial”) key. If set
	to “Yes”, “#” will send the number. In this case, this key is essentially equivalent to the
	“Dial” key. If set to “No”, this “#” key can be included as part of number.
Dial Plan	Dial Plan Rules:
	1. Accepted Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d
	2. Grammar: x - any digit from 0-9;

Firmware version 1.0.0.8 DP715/DP710 User Manual Page 43 of 52