Glossary (F)
# - A - B - C - D - E - F - G - H - I - J - K - L - M - N
O- P - Q - R - S - T - U - V - W - X - Y - Z
FALLBACK
See Call Fallback
FAST CONNECT
Also called Fast Start and H.323 Fast Start. A procedure for shortening the time it takes to start a call by skipping the H.245 phase and transferring channel parameters in the Call Setup messages.
FAST START
See Fast Connect
FCC (FEDERAL COMMUNICATIONS COMMISSION)
An independent US government agency charged with regulating interstate and international communications by radio, television, wire, satellite and cable.
FEC (FORWARD ERROR CORRECTION)
A system of error control for data transmission, whereby the sender adds redundant data to messages, which allows the receiver to detect and correct errors without the need to ask the sender for additional data. Retransmission of data can often be avoided, at the cost of higher bandwidth requirements on average, and is therefore applied in situations where retransmissions are relatively costly or impossible.
FECC (FAR END CAMERA CONTROL)
In conversational video applications, far-end camera control protocol is used by participants to control the remote camera. H.281/282 is the standard that defines how to implement FECC.
FIREWALL
A barrier device placed between two separate networks. A firewall can be implemented in a single router that filters out unwanted packets or it can use a variety of technologies in a combination of routers and hosts. Today many firewalls combine filtering functionality with Network Address Translation (NAT) functions and are typically located at the border of the network they protect.
FLAT CAPACITY
Consistent port capacity independent of video codecs or video quality.
FLAT CAPACITY PLUSTM
When users receive maximum value for their investment, with consistently optimized port capacity independent of video codecs or video quality. If bandwidth is not fully utilized, the number
of available ports increases for reduced cost per port.
FLOW CONTROL
Comprised of the hardware, software and procedure for controlling the transfer of IP packets between two points on a network.
FMC (FIXED MOBILE CONVERGENCE)
The trend to provide a set of identical services accessible from different networks (fixed & mobile). Advanced implementations are also able to seamlessly switch between the networks while in a call.
FRAME RATE
The rate at which individual video pictures (frames) in a sequence are displayed in a video conference. Frame rate is measured in frames per second (fps).