Grandstream Networks GXW40XX Profile Active, Primary SIP Server, Failover SIP Server, DNS Mode

TABLE 11: PROFILE SETTINGS
Profile Active	When set to Yes the SIP Profile is activated.
Primary SIP Server	Primary SIP Server’s IP address or Domain name provided by VoIP service provider.
Failover SIP Server
	Failover SIP Server’s IP address or Domain name provided by VoIP Service provider.
	This server will be used if the Primary SIP server becomes unavailable.
Prefer Primary SIP	Default is no. If set to yes it will register to Primary Server if registration with Failover
Server	server expires
Outbound Proxy	IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
	Controller. Used by GXW40XX for firewall or NAT penetration in different network
	environments. If symmetric NAT is detected, STUN will not work and ONLY outbound
	proxy can correct the problem.
SIP transport	User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network
	environment supports SIP over the selected transport method. Default is UDP.
NAT Traversal	This parameter defines whether the GXW40XX NAT traversal mechanism is activated or
	not. If activated (by choosing “Yes”) and a STUN server is also specified, then the
	GXW40XX performs according to the STUN client specification. Under this mode, the
	embedded STUN client will detect if and what type of firewall/NAT is being used. If the
	detected NAT is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the GXW40XX
	will use its mapped public IP address and port in all of its SIP and SDP messages.
	If the NAT Traversal field is set to “Yes” with no specified STUN server, the GXW40XX
	will periodically (every 20 seconds) send a blank UDP packet (with no payload data) to
	the SIP server to keep the “hole” on the NAT open.
DNS Mode	One from the 3 modes available for “DNS Mode” configuration:
	-A Record (for resolving IP Address of target according to domain name)
	-SRV (DNS SRV resource records indicates how to find services for various protocols)
	-NAPTR/SRV (Naming Authority Pointer according to RFC 2915)
	One mode can be chosen for the client to look up server.
	The default value is “A Record”
User ID is Phone	If the GXW40XX has an assigned PSTN telephone number, this field should be set to
Number	“Yes”.	Otherwise, set it to “No”. If “Yes” is set, a	“user=phone” parameter will be
	attached to the “From” header in SIP request.
SIP Registration	This parameter controls whether the GXW40XX needs to send REGISTER messages to
	the proxy server. The default setting is “Yes”.
Unregister on Reboot	Default is No. If set to “Yes”, the SIP user’s registration information is cleared on reboot.
Outgoing Call without	Default is No. If set to “Yes,” user can place outgoing calls even when not registered (if
Registration	allowed by Internet Telephone Service Provider) but is unable to receive incoming calls.
	Any port, member of a Hunting Group that is not registered with a SIP account, will be
	able to place outbound calls using the SIP credentials of the primary Hunting Group port.
	For example: Port 1, 3 and 5 are members of the same Hunting Group. Port 1 is
	registered with a SIP account. Ports 3 and 5 are not registered. Ports 3 and 5 will be
	able to place outbound calls using the SIP account of port 1, even if Outgoing Call
	without Registration is set to No
Register Expiration	Allows the user to specify the time frequency (in minutes) for the GXW40XX to refresh
	its registration with the specified registrar. The default interval is 60 minutes (or 1 hour).
	The maximum interval is 65535 minutes (about 45 days).
Grandstream Networks, Inc.		GXW40XX User Manual	Page 29 of 38
		Firmware 1.0.4.2	Last Updated: 06/2011