Important Settings; Nat Settings - Grandstream Networks HT812 Administration Manual

Passwor
Specifies account password provided by VoIP service provider (ITSP) to register to SIP servers.
d
Name Chooses a name to be associated to user.
Profile
Defines the profile ID for each port.
ID
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:
Hunting
Group FXS Port #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
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: HT812/HT814 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 hook Configures a User ID or extension number that is automatically dialed when off-hook. Only the user part of a
Auto- SIP address needs is entered here. The HT812/HT814 will automatically append the "@" and the host portion of
Dial the corresponding SIP address.

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.
Table 10: FXS Ports