Grandstream Networks, Inc. HT-502 User Manual Page 14 of 35
Firmware 1.0.0.39 Last Updated: 03/2007

SENDING AND RECEIVING FAX
HT–502 supports fax in two modes: 1) T.38 (Fax over IP) and 2) fax pass through.
T.38 is the preferred method because it is more reliable and works well in most network conditions. If the
service provider supports T.38, please use this method by selecting T.38 as fax mode (default). If the
service provider does not support T.38, pass-through mode may be used. If you have problems with
sending or receiving Fax, toggle the Fax Tone Detection Mode setting.
CONFIGURATION GUIDE

CONFIGURING THE HT–502 VIA VOICE PROMPTS

DHCP MODE
Select voice menu option 01 to enable HT–502 to use DHCP.
STATIC IP MODE
Select voice menu option 01 to enable HT–502 to use STATIC IP mode, then use option 02, 03, 04, 05 to
set up IP address, Subnet Mask, Gateway and DNS server respectively.
FIRMWARE SERVER IP ADDRESS
Select voice menu option 13 to configure the IP address of the firmware server.
CONFIGURATION SERVER IP ADDRESS
Select voice menu option 14 to configure the IP address of the configuration server.
UPGRADE PROTOCOL
Select voice menu option 15 to choose firmware and configuration upgrade protocol. User can choose
between TFTP and HTTP.
FIRMWARE UPGRADE MODE
Select voice menu option 17 to choose firmware upgrade mode among the following three options: 1)
always check, 2) check when pre/suffix changes, and 3) never upgrade
WAN PORT WEB ACCESS
Select voice menu option 12 to enable WAN Port Wed Access of the device configuration pages.