Operation Manual

FIRMWARE 1.0.0.49 GXW42XX USER MANUAL PAGE 34 OF 54
Layer 3 QoS
This field defines the layer 3 QoS parameter which can be the value used for IP Precedence or
Diff-Serv or MPLS. Default value is 12.
Layer 2 QoS
Value used for layer 2 VLAN tag. Default setting is blank.
STUN Server
IP address or Domain name of the STUN server.
STUN server assists devices behind a NAT firewall or a router to set up calls via VoIP.
STUN server is often provided by the VoIP service provider or a public STUN server can be
used. For a sample list of public free STUN servers please refer to: http://www.voip-
info.org/wiki-STUN
Keep-alive
interval
This parameter specifies the number of seconds after which a new blank UDP packet will be
sent out to the proxy/server port in order to have the port stay open and the device
remain
reachable. Default is 20 seconds.
Use STUN to
detect
network
connectivity
Use STUN keep-alive to detect WAN side network problems. If keep-alive request does not
yield any response for configured number of times, the device will restart the TCP/IP
stack. If
the STUN server does not respond when the device boots up, the feature is disabled.
Firmware
Upgrade &
Provisioning
Enables GXW42XX to download firmware or configuration file using the TFTP, HTTP or HTTPS
protocols.
Via TFTP Server
This is the IP address of the configured TFTP server. If selected and it is non-zero or not blank,
the GXW42XX
retrieves the new configuration file or new code image from the specified TFTP
serv
er at boot time. After 5 attempts, the system will timeout and then it will start the boot
process using the existing code image in the Flash memory. If a TFTP server is configured and
a new code image is retrieved, the new downloaded image is saved into the Flash memory.
Note: Do NOT interrupt the firmware
upgrade process (especially the power supply) as
this will damage the device. Depending on the network environment this process may
take
up to 15 or 20 minutes.
Via HTTP or
HTTPS Server
The URL for the HTTP server used for firmware upgrade and configuration via HTTP.
Note: If Auto Upgrade is set to No, GXW42XX will only do HTTP download once at boot up.
Firmware Server
Path
IP address or domain name of firmware server. That URL of the server that hosts the firmware
release. The default server is: fm.grandstream.com/gs
Config Server
Path
IP address or domain name of configuration server. The server hosts a copy of the
configuration file to be installed on the gateway. The default server is: fm.grandstream.com/gs