Grandstream Networks GHP6 Series - Profiles; General Settings; Network Settings; SIP Settings - Basic Settings

Profiles
General Settings
Profile Active When set to Yes, the SIP Profile is activated.
SIP Server 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 Server
If set to yes it will register to Primary Server if registration with Failover server
expiresDefault is No.
Primary Outbound Proxy
IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
Controller. Used by GXW42XX 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.
Backup Outbound Proxy
Backup Outbound Proxy which will be used when the primary outbound proxy cannot
be connected
Prefer Primary Outbound Proxy
If yes, the profile will re-register via the primary outbound proxy when registration
expires.
Network Settings
Layer 3 QoS Settings
Configure the Diff-Serv value for SIP and RTP. Default is:SIP Diff-Serv24RTP Diff-
Serv46
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)Use Configured IP(If selected, please fill in
Primary IP, Backup IP 1 and Backup IP 2.)One mode can be chosen for the client to
look up server.The default value is “A Record”
DNS SRV Use Registered IP
If yes, under DNS SRV mode, use Registered IP as INVITE destination instead of
using high priority IP from resolved IP list.
Primary IP
Configures the primary IP address where the phone sends DNS query to when “Use
Configured IP” is selected for DNS mode.
Backup IP 1
Configures the backup IP 1 address where the phone sends DNS query to when “Use
Configured IP” is selected for DNS mode.
Backup IP 2
Configures the backup IP 2 address where the phone sends DNS query to when “Use
Configured IP” is selected for DNS mode.
NAT Traversal
This parameter defines whether the GXW42XX NAT traversal mechanism is activated
or not. If activated (by choosing “STUN”) and a STUN server is also specified, then
the GXW42XX 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
GXW42XX will use its mapped public IP address and port in all of its SIP and SDP
messagesThe NAT traversal can also be as “UPnP” (universal plug and play)If the
NAT Traversal field is set to “STUN” with no specified STUN server, the GXW42XX
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.
Use NAT IP
The NAT IP address used in SIP/SDP messages. It should ONLY be used if required
by your ITSP.
Proxy-Require A SIP Extension to notify the SIP server that the phone is behind a NAT/Firewall.
SIP Settings – Basic Settings