SABFAM Company have had abundant experiences in both designing and implementing the different kinds of access networking systems over the last decade.

The access network is the network or the part of a telecommunications network that gives the user access to the telecommunications service(s). The access network can be made up out of different parts, e.g. the telephone network has an access network in every city. The different parts of the access network are connected through backbones. These backbones form the so-called core network.

Some types of access networks:
• Ethernet is the most commonly installed wired LAN (local area network) technology. Ethernet LAN typically uses coaxial cable or special grades of twisted pair wires.
• Wireless LANs allow mobile users to connect through a wireless (radio) connection.
• Fiber optic networks such as fiber to the home (FTTH) use optical fiber from a central point directly to individual buildings such as residences, apartment buildings and businesses.
• ADSL (Asymmetric Digital Subscriber Line) is a technology for transmitting digital information at a high bandwidth on existing phone lines to homes and businesses.

SABAFAM has the capability to Design, consultancy and supply SDH and OTN protocols for transmission data. It is also notable that SABAFAM have had noticeable cooperation with high level telecommunication brands.

In telecommunications, transmission is the process of sending and propagating an analogue or digital information signal over a physical point-to-point or point-to-multipoint transmission medium, either wired, optical fiber or wireless. One example of transmission is the sending of a signal with limited duration, for example a block or packet of data, a phone call, or an email. Transmission technologies and schemes typically refer to physical layer protocol duties such as modulation, demodulation, line coding, equalization, error control, bit synchronization and multiplexing, but the term may also involve higher-layer protocol duties, for example, digitizing an analog message signal, and source coding (compression). Transmission of a digital message, or of a digitized analog signal, is known as digital communication.

SABAFAM is utilizing NGN switches specifically in this field.

In a telecommunications network, a switch is a device that channels incoming data from any of multiple input ports to the specific output port that will take the data toward its intended destination. In the traditional circuit-switched telephone network, one or more switches are used to set up a dedicated though temporary connection or circuit for an exchange between two or more parties. On an Ethernet local area network (LAN), a switch determines from the physical device (Media Access Control or MAC) address in each incoming message frame which output port to forward it to and out of. In a wide area packet-switched network such as the Internet, a switch determines from the IP address in each packet which output port to use for the next part of its trip to the intended destination.

In the Open Systems Interconnection (OSI) communications model, a switch performs the Layer 2 or Data-link layer function. That is, it simply looks at each packet or data unit and determines from a physical address (the “MAC address”) which device a data unit is intended for and switches it out toward that device. However, in wide area networks such as the Internet, the destination address requires a look-up in a routing table by a device known as a router. Some newer switches also perform routing functions (Layer 3 or the Network layer functions in OSI) and are sometimes called IP switches.

On larger networks, the trip from one switch point to another in the network is called a hop. The time a switch takes to figure out where to forward a data unit is called its latency. The price paid for having the flexibility that switches provide in a network is this latency. Switches are found at the backbone and gateway levels of a network where one network connects with another and at the subnetwork level where data is being forwarded close to its destination or origin. The former is often known as core switches and the latter as desktop switches.