Grandstream Networks, Inc. HT-502 User Manual Page 9 of 31
Firmware 1.0.0.29 Last Updated: 01/2007

TABLE 4: HT 502 HARDWARE SPECIFICATIONS
LAN Interface 2 x RJ45 10/100Mbps (integrated router)
LED 5 LEDs (GREEN)
Universal
Switching
Power Adaptor
Input: 100-240V AC, 50/60Hz, 0.5A Max
Output: 12V DC, 1.25A
UL certified
Dimension
Weight
Temperature 32~104°F / 0~40°C
Humidity 10% - 90% (non-condensing)
Compliance FCC, CE
BASIC OPERATIONS

BECOME FAMILIAR WITH VOICE PROMPT

HT–502 stores a voice prompt menu (Interactive Voice Response or IVR) for quick browsing and simple
configuration. The IVR menu and the LED button work with any of the FXS port. To enter the IVR menu,
pick up the handset and dial “***”.
TABLE 5: HT–502 IVR MENU DEFINITIONS
Menu Voice Prompt Options
Main Menu “Enter a Menu Option” Press “*” for the next menu option
Press “#” to return to the main menu
Enter 01-06, 47, 86, 99 menu options
01 “DHCP Mode”,
“Static IP Mode”
Press “9” to toggle the selection
If using “Static IP Mode”, configure the IP address
information using menus 02 to 05.
If using “Dynamic IP Mode”, all IP address information
comes from the DHCP server automatically after reboot.
02 “IP Address “ + IP address The current WAN IP address is announced
If using “Static IP Mode”, enter 12 digit new IP address.
03 “Subnet “ + IP address Same as menu 02
04 “Gateway “ + IP address Same as menu 02
05 “DNS Server “ + IP address Same as menu 02
07 Preferred Vocoder Press “9” to move to the next selection in the list:
PCM U / PCM A
G-723
G-729A/B/E
G-726-32
G728
iLBC