Dtmf Methods; Preferred Vocoder (Codec); Configuring Ht818 Through Voice Prompts - Grandstream Networks HT818 Administration Manual

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 SIP/RTP 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 FXS web page), set this to Yes when gateway is behind firewall on a private
network.

DTMF Methods

The HT818 supports the following DTMF mode:
•
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 HT818 support following voice codecs. On Profile pages, choose the order of your favorite codecs:
•
PCMU/A (or G711µ/a)
•
G729 A/B
•
G723.1
•
G726
•
iLBC
•
OPUS

Configuring HT818 through Voice Prompts

As mentioned previously, The HT818 has a built-in voice prompt menu for simple device configuration.
Please refer to "Understanding HT818 Interactive Voice Prompt Response
about IVR and how to access its menu.
• DHCP MODE
Select voice menu option 01 to enable HT818 to use DHCP.
• STATIC IP MODE
Select voice menu option 01 to enable HT818 to use STATIC IP mode, then use option 02, 03, 04, 05 to
set up IP address, Subnet Mask, Gateway and DNS server respectively.
HT818 Administration Guide
Version 1.0.9.3
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