Grandstream Networks HT502 - Manual (Page 27)

Grandstream Networks, Inc. HT-502 User Manual Page 27 of 31
Firmware Version 1.0.1.21 Last Updated: 12/2008
Loop Current
Disconnect Duration Here can be configured duration of such voltage drop described in topic above.
Hook Flash Timing Time period when the cradle is pressed (Hook Flash) to simulate FLASH. To prevent
unwanted activation of the Flash/Hold and automatic phone ring-back, adjust this time
value.
On Hook Timing On-hook timing is the minimum time for an on-hook event to be validated.
Gain Voice path volume adjustment.
• Rx is a gain level for signals transmitted by FXS
• Tx is a gain level for signals received by FXS.
Default = 0dB for both parameters. Loudest volume: +6dB Lowest volume: -6dB.
User can adjust volume of call on either end using the Rx Gain Level parameter and
the Tx Gain Level parameter located on the FXS Port Configuration page.
If call volume is too low when using the FXS port (ie. the ATA is at user site), adjust
volume using the Rx Gain Level parameter under the FXS Port Configuration page.
If voice volume is too low at the other end, user may increase the far end volume using
the Tx Gain Level parameter under the FXS Port Configuration page.
Ring Tones This function lets you configure ring tone cadence preferences. User has 10 choices.
The configuration, completed in Distinctive Ring Tones block in the same page, applies
to ring tones cadences configured here.
Saving the Configuration Changes
Click the “Update” button in the Configuration page to save the changes to the HT502 configuration. The
following screen confirms that the changes are saved. Reboot or power cycle the HT502 to make the
changes take effect.
Rebooting the HT502 from Remote
Remotely reboot the HT502 by clicking the “Reboot” button at the bottom of the configuration page. When
finished, re-login to the HT502 after waiting for about 30 seconds.
Configuration through a Central Server
Grandstream HT502 can be automatically configured from a central provisioning system.
When HT502 boot up, it will send TFTP or HTTP/HTTPS request to download configuration file,
“cfg000b82xxxxxx”, where “000b82xxxxxx” is the LAN MAC address of the HT502.
The configuration file can be downloaded via TFTP or HTTP/HTTPS from the central server. A service
provider or an enterprise with large deployment of HT502 can easily manage the configuration and service
provisioning of individual devices remotely from a central server.
Grandstream has a provisioning system called GAPS (Grandstream Automated Provisioning System) that
is used to support automated 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 for firmware upgrade, remote reboot, etc.
Grandstream provides GAPS service to VoIP service providers. Use GAPS for either simple redirection or
with certain special provisioning settings. At boot-up, Grandstream devices by default point to