User's Manual
Grandstream Networks, Inc.  HT-702 User Manual  Page 16 of 32 
  Firmware Version 1.0.0.17  Last Updated: 02/2012 
User Level:  Password: Web pages allowed: 
End User Level  123  Only Status and Basic Settings 
Administrator Level  admin  Browse all pages 
The password is case sensitive with maximum length of 25 characters. The factory default password for 
End User and administrator is “123” and “admin” respectively. Only an administrator can access the 
“ADVANCED SETTING”, “FXS PORTs” configuration pages. Please reference the GUI pages using the 
following link: http://www.grandstream.com/products/ht_series/HT702/documents/HT702_gui.zip
 . 
NOTE:  If you cannot log into the configuration page by using the default password, please check with the 
VoIP service provider. It is most likely the VoIP service provider has provisioned the device and configured 
for you therefore the password has already been changed. 
Important Settings 
The end-user must configure the following settings according to the local environment. NOTE: Most 
settings on the web configuration pages are set to the default values
. 
NAT Settings 
If you plan to keep the gateway within a private network behind a firewall, we recommend using STUN 
Server. The following three (3) settings are useful in the STUN Server scenario: 
1.  STUN Server (under Advanced Settings webpage) 
Enter a STUN Server IP (or FQDN) that you may have, or look up a free public STUN Server on the 
internet and enter it on this field. If using Public IP, keep this field blank. 
2.  Use Random Ports (under Advanced Settings webpage) 
This setting depends on your network settings. Generally if you have multiple IP devices under the 
same network, it should be set to Yes. If using a Public IP address, set this parameter to No
. 
3.  NAT Traversal (under the Profile web pages) 
Set this to Yes
 when gateway is behind firewall on a private network. 
DTMF Methods 
DTMF Settings are in FXS portX pages
. 
• DTMF in-audio 
•  DTMF via RTP (RFC2833) 
•  DTMF via SIP INFO 
Set priority of DTMF methods according to your preference. This setting should be based on your server 
DTMF setting. 
PREFERRED VOCODER (CODEC) 
The HT702 supports a broad range of voice codecs. Under Profile web pages, choose your preferred 
order of different codecs: 
• PCMU/A (or G711µ/a) 










