Point to Point Frame Relay

Frame Relay provides wide bandwidth when needed.

Frame Relay is a high speed communication technology, which provides flexible band width use over wide area networks varying between 33,6 and 2048 Kbps speed range developed for handling bursting traffic profile the best path.

Frame Relay takes the statistical multiplexing method and the common port use of the X.25 package switching networks, and the high speed and minimum delay features of the TDM circuit switching networks.

Frame Relay is used to transform the data into frames (packages) and send them to the other side through WAN. Each frame carries an address in order the target of the frame to be understood by the network. Frames can pass through many switches in the Frame Relay network until they reach their destinations. Frame Relay eliminates the Layer 3 procedures and helps to increase the speed.

A small Frame Relay packet transmitted from one point to another waits for the packets to be sent before itself in the buffer pool; this causes delay and delay is an unacceptable parameter for sound. Therefore, Frame Relay is not very suitable for sound. Also, error control mechanisms are minimized in Frame Relay. Therefore, although it is faster compared to X.25, it may send erroneous information.

Two types of virtual circuits are established in Frame Relay;

  • SVC (Switched Virtual Circuit): Temporarily established circuit during the data transmission.
  • PVC (Permanent Virtual Circuit): Permanently established circuit.

DLCI (Data Link Connection Identifier): The virtual circuits in Frame Relay are identified with DLCI numbers.

It defines the interface related to the data transmission and signalling between the end points and the network. This interface is based on the principle of multiple users sharing the communication sources and allows them to communicate with more than one points through a single physical line connected to the network. At his point, instead of band width permanently assigned between the two ends, higher band widths used in short time intervals when needs are in question. The virtual connections to be made with multiple points through this physical line provide an advantage in costs compared to the leased lines on the networks with different topologies as the required number of circuits decrease.

Figure (clockwise): Port Speed, Transmission, Port Speed, BILKENT BRANCH, OSTIM BRANCH, Port Speed, Port Speed, BATMAN BRANCH, Portal Speed, ADANA BRANCH.