Important Settings - Grandstream Networks HT818 Administration Manual

Configures hunting group feature on the specific port.
For example: Port 1, 2, and 3 are members of the same Hunting Group. Port 1 is registered with a SIP account. Ports 2,
and 3 are not registered. Ports 2 and 3 will be able to place outbound calls using the SIP account of port 1. Select
appropriate value for Hunting Group feature. The original SIP account should be set to Active while the group members
should be set to the port number of the Active Port.
Example configuration of a Hunting group:
FXS Port #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
Hunting
Group
FXS Port #2: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #3: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #4: SIP UserID and Authenticate ID entered, Hunting group set to "None"
Hunting Group 1 contains ports 1, 2, 3. FXS port 4 is registered but it is not added to the Hunting Group 1.
Note: HT818 will use CID name from FXS port initiating the outgoing call if the "Name" field is entered for that specific
port.
Request
URI
If configured, device will route the incoming call to designated port by request URI user ID in SIP INVITE.
Routing
ID
Enable
Enables / Disables the port
Port
Off
Configures a User ID or extension number that is automatically dialed when off-hook. Only the user part of a SIP address
hook
needs is entered here. The HT818 will automatically append the "@" and the host portion of the corresponding SIP
Auto-
address.
Dial

Important Settings

NAT Settings
If you plan to keep the Handy Tone within a private network behind a firewall, we recommend using STUN Server. The following three
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 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
Table 10: FXS Ports