As the media access gateway of Voice over IP (VoIP) and Fax over IP (FoIP), the IAD208E(M) is applied to the Next Generation Network (NGN) or IP Multimedia Subsystem (IMS). The IAD208E(M) converts analog voice data into IP packets and transmits data through the IP network.
The IAD208E(M) is connected to the NGN/IMS through the Media Gateway Control Protocol (MGCP) or the Session Initiation Protocol (SIP). It connects calls between calling and called parties through the Media Gateway Control (MGC) or SIP server.
The IAD208E(M) can be connected to networks through the x Digital Subscriber Line (xDSL), switch, or Gigabit-capable Passive Optical Network (GPON) / Ethernet Passive Optical Network (EPON).
The IAD can transmit integrated voice and data signals to the NGN and IMS in the following ways:
The IAD is connected to the DSLAM through the RTU and is connected to the IP network through the xDSL. This mode is applied to mature xDSL copper cable networks.
The IAD is connected to the IP network through switches. This mode is applied to residential, office building, and enterprise users.
The IAD is connected to the IP network through xPON so that uplink services can be processed at high speed. This mode is applied to the scenario where fibers are laid out in residential areas and corridors.
Figure 1 lists three modes for connecting the Integrated Access Device (IAD) to the NGN or Internet.
Figure 1 Position of the IAD208E(M) on the network
Broadband Remote Access Server
A new type of access gateway for broadband network. As a bridge between backbone networks and broadband access networks, BRAS provides methods for fundamental access and manages the broadband access network.
Remote Terminal Unit
Digital Subscriber Line Access Multiplexer
A network device, usually situated in the main office of a telephone company that receives signals from multiple customer digital subscriber line (DSL) connections and puts the signals on a high-speed backbone line using multiplexing techniques.
Optical Line Terminal
Optical network elements that terminate a line signal.
Optical Network Unit
A form of Access Node that converts optical signals transmitted via fiber to electrical signals that can be transmitted via coaxial cable or twisted pair copper wiring to individual subscribers.
Optical Network Terminal
A device that terminates the fiber optic network at the customer premises.
Internet Service Provider
An organization that offers users access to the Internet and related services.
Application Service Provider
A company that provides Internet download and related services for various organizations. Without ASP, these organizations have to store such information in their own computers.
Network Service Part
Customer Premise Equipment
Telecommunications equipment located on a customer's premises, including modems, and telephones. CPE is the equipment located at the customer's end of a network.