Grandstream Networks HT-286 Registration, Expiration, Early Dial, Allow outgoing call, Send Key

Registration	This parameter allows the user to specify the time frequency (in minutes) the
Expiration	phone will refresh its registration with the specified registrar. The default
	interval is 3600 seconds (or 1 hour). The maximum interval is 45 days.
Early Dial	This parameter controls whether the phone will attempt to 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 most likely be rejected by the proxy (with a 404 Not Found error).
	Please note that this feature is NOT designed to work with and should NOT
	be enabled for direct IP-to-IP calling.
Allow outgoing call	Default is set to “No”.
without Registration
Dial Plan Prefix	This value contains the dial plan prefix string (typically an ASCII numeric
	string). If it is not blank, then this string will added to the dialed number.
No Key Entry	Default is 4 seconds.
Timeout
Use # as	This parameter allows the user to configure the “#” key to be used as the
Send Key	“Send”(or “Dial”) key. Once set to “Yes”, pressing this key will immediately
	trigger the sending of dialed string collected so far. In this case, this key is
	essentially equivalent to the “(Re)Dial” key. If set to “No”, this # key will then
	be included as part of the dial string to be sent out.
Local SIP port	This parameter defines the local SIP port the IP phone will listen and transmit
	on. The default value is 5060.
Local RTP port	This parameter defines the local RTP-RTCP port pair the IP phone will listen
	and transmit on. It is the base RTP port for channel 0. When configured,
	channel 0 will use this port value for RTP and the port_value+1 for its RTCP;
	channel 1 will use port_value+2 for RTP and port_value+3 for its RTCP. The
	default value is 5004.
Use Random Port	This parameter, when set to Yes, will force random generation of both the
	local SIP and RTP ports. This is usually necessary when multiple IP phones
	are behind the same NAT.
SIP Registration	Retry registration if the process failed. Default is 20 seconds.
Failure Retry Wait
Time

Grandstream Networks, Inc.	HT–286 User Manual	Page 20 of 28
	Firmware 1.1.0.31	Last Updated: 1/2009