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Grandstream Networks, Inc. HT-502 User Manual Page 22 of 32
Firmware Version 1.0.4.2 Last Updated: 06/2011
Firmware Key
Used for firmware encryption. Should be 32 digit in hexadecimal representation. End
user should keep it blank.
SSL Certificate
The user specify SSL certificate used for SIP over TLS in X.509 format.
SSL Private Key
The user specify SSL private key used for SIP over TLS in X.509 format.
SSL Private Key
Password
User specify password to protect the private key above.
ACS URL
User specify the Auto Configuration Server’s URL (TR-069 protocol)
ACS Username
User specify the ACS Username
ACS Password
User specify the ACS password
Periodic Inform
Enable
Default is No. If set to YES, device will send inform packets to the ACS
Periodic Inform
Interval
Frequency that the inform packets will be sent out to the ACS
Connection Request
Username
Set a user name for the ACS to connect to this device
Connection Request
Password
Set a password for the ACS to connect to this device
System Ring Cadence
Configuration option is set ring cadence on all FXS ports for all incoming calls. (Syntax:
c=on1/off1-on2/off2-on3/off3; [...]) Default is set to c=2000/4000; (US standards)
Call Progress Tones
Using these settings, users can configure tone frequencies and cadence according to
their preference. By default they are set to North American frequencies. Configure these
settings with known values to avoid uncomfortable high pitch sounds. ON is the period of
ringing (“On time” in ‘ms’) while OFF is the period of silence. In order to set a continuous
tone, OFF should be zero. Otherwise it will ring ON ms and a pause of OFF ms and then
repeat the pattern.
Example configuration for N.A. Dialtone:
f1=350@-13,f2=440@-13,c=0/0;
Syntax: f1=freq@vol, f2=freq@vol, c=on1/off1-on2/off2-on3/off3; [...]
(Note: freq: 0 - 4000Hz; vol: -30 - 0dBm)
Lock Keypad Update
If set to “Yes”, the configuration update via keypad is disabled.
Disable Voice Prompt Default is No. Disables the voice prompt configuration.
Disable Direct IP Call Default is No. Disables the Direct IP Call function.
NTP serve
r
URI or IP address of the NTP (Network Time Protocol) server. This parameter
synchronizes the date and time.
Syslog Serve
r
The IP address or URL of System log server. This feature is especially useful for the ITSP
(Internet Telephone Service Provider)