User's Manual

FIRMWARE VERSION 1.0.0.2 GXW42XX USER MANUAL Page 46 of 52
Gain
Handset volume adjustment. RX is for receiving volume (direction FXSÆto analog
phone), TX is for transmission volume (Analog phoneÆ to FXS). Default values are 0dB
for both parameters. Loudest volume: +6dB Lowest volume: -6dB.
Disable Line Echo
Canceller (LEC)
Default is No. If set to “Yes”, device will not use LEC to remove echo from a voice
communication.
Ring Tones
Configure ring cadences according to preference.
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SAVINGTHECONFIGURATIONCHANGES
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After user makes a change to the configuration, press the “Update” button in the Configuration Menu. The
web browser will then display a message window to confirm saved changes.
Grandstream recommends reboot or power cycle the IP phone after saving changes.
REBOOTINGFROMREMOTE
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Press the “Reboot” button at the bottom of the configuration menu to reboot the phone remotely. The web
browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in
again.
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CONFIGURATIONTHROUGHACENTRALSERVER
Grandstream GXW42XX can be automatically configured from a central provisioning system.
When GXW42XX boots up, it will send TFTP or HTTP request to download configuration file,
“cfg000b82xxxxxx” or “cfg000b82xxxxxx.xml”, where “000b82xxxxxx” is the LAN MAC address of the
GXW42XX. It will first request “cfg000b82xxxxxx” then “cfg000b82xxxxxx.xml”
A service provider or an enterprise with large deployment of Grandstream devices can easily manage the
configuration and service provisioning of individual devices remotely from a central server.
Grandstream has a central provisioning system called GAPS (Grandstream Automated Provisioning
System). GAPS supports automatic configuration of Grandstream devices. GAPS uses enhanced (NAT
friendly) TFTP or HTTP (thus no NAT issues) and other communication protocols to communicate with
each individual Grandstream device.