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Advanced User configuration includes not only the end user configuration, but also advanced configuration
such as SIP configuration, Codec selection, NAT Traversal Setting and other miscellaneous configuration.
Table 15: Device Configuration – Settings /Advanced Settings
Admin Password
Confirm Password
Layer 3 QoS
Layer 2 QoS
Local RTP port
Use Random Port
Keep-alive interval
Use NAT IP
STUN Server
Firmware Upgrade and
Provisioning
XML Config File
Password
HTTP/HTTPS User
Name
Grandstream Networks, Inc.
Administrator password. Only the administrator can access the "Advanced Settings"
and "Account Settings" page. Password field is purposely blank for security reasons
after clicking update and saved. The maximum password length is 25 characters.
Enter the end user password again as above to confirm new password.
This field defines the layer 3 QoS parameter. It is the value used for IP Precedence or
Diff-Serv or MPLS. Default value is 12.
This contains the value used for layer 2 802.1Q/VLAN tag and 802.1p priority value.
Default setting is 0.
Note: VLAN supported equipment is required when configuring these settings.
This parameter defines the local RTP port pair used to listen and transmit. It is the
base RTP port for channel 0. When configured, channel 0 will use this port _value for
RTP; channel 1 will use port_value+2 for RTP. Local RTP port ranges from 1024 to
65400 and must be even. The default value is 5004.
This parameter, when set to "Yes", will force random generation of both the local SIP
and RTP ports. This is usually necessary when multiple GXPs are behind the same
NAT. Default is "No".
This parameter specifies how often the GXP21xx sends a blank UDP packet to the
SIP server in order to keep the NAT "pin hole" open. Default is 20 seconds.
NAT IP address used in SIP/SDP message. Default is blank.
IP address or Domain name of the STUN server. STUN resolution result will display
in the STATUS page of the Web UI.
Allows the user to select the following options for firmware upgrade:
Always Check for New Firmware
Check New Firmware only when F/W pre/suffix changes
Always Skip the Firmware Check.
Firmware upgrade may take up to 10 minutes depending on network environment.
Please do not interrupt the firmware upgrading process.
Note: Grandstream strongly recommends that the user upgrade firmware locally in a
LAN environment if using TFTP to upgrade. Please DO NOT interrupt the upgrade
process (especially the power supply) as this will damage the device.
The password used for encrypting the XML configuration file using OpenSSL. This is
required for the phone to decrypt the encrypted XML configuration file.
The user name for the HTTP/HTTPS server.
GXP21xx User Manual
Firmware version: 1.0.1.110
Page 31 of 48
Last Updated: 01/2012
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