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DAG1000/2000 Series FXS Voice Gateway User Manual
half-duplex", "100Mbps full-duplex", default is "Auto Detect".
When select "Obtain IP address automatically", DAG will obtain IP address by DHCP.
•
When select "Use the following IP address", that configure DAG to fixed IP address
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mode.
When select "PPPoE", please fill in account and password offered by ISP in internet
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account and password.
Notes
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】：
1 ） If select DHCP to obtain IP address, please ensure DHCP server in network and work
normally.
2 ） Under route mode, please configure LAN port and WAN port in different segment,
otherwise DAG can't work normally.
3 ） Under route mode, login DAG configuration interface only used LAN port.
4 ） After configuration, restart device configuration validation.
4.5.2 VLAN Parameter
Generally, Internet provides only Best Effort Service. Since Ethernet is the most spread LAN
access technology, importance of providing it a quality of service mechanism ought not to
be neglected.
Ethernet technology also used as WAN technology, not only as LAN technology. Due to
rapidly increasing use Internet through Public Switched Telecommunication Network
(PSTN), Telephone Companies are forced to implement IP-based networks as their PSTN
backbones. A network like this without any Quality of Service mechanisms would be
disastrous. Just imagine yourself trying to get an emergency call through while others just
surf the Internet.
1) 802.1Q
The IEEE 802.1Q standard defines architecture for Virtual Bridged LANs, the services
provided in Virtual Bridged LANs and the protocols and algorithms involved in the provision
of those services.
No Quality of Service mechanisms are defined in this standard, but an important
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