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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
63 
An ISO Certificed Company 
Field 
Description 
IP Address 
The management IP address of the LAN on 
Subnet Mask 
The subnet mask of the IP address. By 
default, it is 255.255.255.0. 
Virtual IP Address 
Select it, you can access the Internet through 
the virtual IP address. By default, it is not 
selected. After you select it, you are required 
to enter 
IP Address
and 
Subnet Mask
. 
MTU 
The maximum transmission unit. By default, it 
is 1500. 
Enter the required parameters and click 
Apply
to take it effect. 
3.4.3.2 
IPv6 Address 
Click
IPv6 Address 
in the
Local Network Configuration 
page and the following 
page appears. In this page, enter the unicast IPv6 address of the LAN side, which 
should not begin with fe8. 
3.4.3.3 
DNS Client 
Click 
DNS Client
in the 
Local Network Configuration
page and the following 
page appears. A DNS server is any PC registered to join the DNS. A DNS server 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
64 
An ISO Certificed Company 
runs special-purpose networking software, features a public IP address, and 
contains a database of network names and addresses for other Internet hosts. 
3.4.3.4 
DNS Relay 
Click 
DNS Relay 
in the 
Local Network Configuration
page and the following 
page appears. The DNS relay responds to DNS requests from the LAN side. 
Usually it transmits DNS requests to other DNS servers to parse, the addresses of 
the DNS servers are obtained through the DHCP client. 
Note: 
Dial-up under bridge mode, the DNS setting is inefficient. When the DNS sends 
the request, the DNS client parses them by itself. If the parse is failed, it is 
delivered to a superior DNS server. DNS client can record some domain 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
65 
An ISO Certificed Company 
information to the buffer. DNS relay does not parse them, and all the requests 
are transferred to a superior DNS server. 
3.4.3.5 
DNS LAN Host 
When you enter a domain name into a browser, the PC must send a request to a 
DNS server to obtain the corresponding IP address immediately. The DNS server 
attempts to look up the domain name in its local host database immediately. 
Click 
DNS LAN Host 
in the 
Local Network Configuration
page and the following 
page appears. 
Click 
Create a New DNS hostname entry manually
and the following page 
appears. 
The following table describes the parameters of this page. 
Field 
Description 
Host Name 
Enter the domain name. 
IP Address 
Enter the valid IP address of LAN host. 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
66 
An ISO Certificed Company 
Click 
Apply
to add the host name and IP address as DNS server. Then other hosts 
can access the PC through the domain name. 
3.4.4 
Voice Configuration 
Voice over Internet Protocol (VoIP) is a technology that allows you to make voice 
calls using a broadband Internet connection instead of a regular phone line. 
3.4.4.1 
System Settings 
Choose 
Voice Configuration
> 
System Settings
and the following page appears. 
In this page, you can view and modify the settings of system wide voice. 
Cid Type:
Calling identity delivery (CID) supports field services kit (FSK), dual-tone 
multi-frequency (DTMF). 
Select 
Enable (SIP) 
from the 
VoIP Functionality
drop-down list, select the IP 
interface name and correct region. 
Click 
Go To Advanced view
and the following page appears. In this page, you can 
configure more settings of the VoIP parameter. 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
67 
An ISO Certificed Company 
3.4.4.2 
SIP 
Click 
SIP 
in the
VoIP Configuration 
page and the following page appears. In this 
page, you can view and modify the related settings of the SIP protocol.