DAG 1000(4FXS) can be with the mainstream SIP proxy servers(such as Asterisk, SIP registration server, etc. ) to implement  docking. Run in a variety of environments and support SIP server registration and call control. DAG1000(4FXS)access gateway can realize flow media conversion between the IP and PSTN.

Large port access gateway
 Standard SIP protocols
 Standard G.723.1,G.729A/B,PCM A/U code
 Call forwarding, Call hold, Caller ID, DND  standard voice service
 Anonymous call, Direct IP Call and Busy tone
 Fax over IP  and Three –way conferences

 Multiple FXS ports optional
DAG 1000(4FXS) provides 16interfaces for users, and offers two configuration ports: WAN and Serial.

Full-features to meet customer’s requirements:
Supporting many applications such as  call forwarding, caller ID, DND, busy tone, conference with IPPBX and Fax over IP.

Be easy to configure and maintain:
Customer can access GUI of DAG series  or command line by http or telnet. With rich tools, customers can easily manage the system, and is specifically designed to be easy to use and affordable VoIP solution for both carrier and enterprise.

Security and reliability
Administrator authentication mechanism is used to ensure that information and data  are  secured.

Protocols supported
DAG 1000(4FXS) supports SIP 1.0/2.0

Main features
Support Call forwarding, Call waiting, Call display etc standard voice service and Busy tone, Fax over IP, Three-way conference . Support PPPoE client , ensure  voice service quality , remote management and maintenance. It is capable to work well with mainstream softswitch providers.