Trunking is the technology where a pool of frequency channels is available to a large number of different user groups. The trunking system transmits a continuous data channel that steers radios assigned to the same talk-group to one of the system frequencies when there is a request by one of the units to transmit. The technology is very efficient and has been in use by telephone companies for a very long time.

Port Trunking defines a network link aggregation and trunking method which specifies how to create a single high-speed logical link that combines several low-speed physical links. CeLAN's Intelligent Switch and EtherSW 2400F/ 1600F all support port trunking function.

Port trunking is connecting two switches with multiple links that act as one high-bandwidth link. Up to four port (full- or half-duplex) can be used for each trunk on a Switch 2000 or Switch 800t. This enables up to 800 Mbps of bandwidth for linking switches. The benefits of port trunking are: The illustration below shows how port trunking is used in three different locations. Initially, all of the links were 100 Mbps links at 100TX speed and in full duplex mode.

Probably yes! The BC780XLT works on almost every type of trunking system, including Motorola Type I, Type II and Iii, as well as EDACS (wide and narrow!) and LTR.

On conventional radio systems, we tend to associate physical frequencies with the agencies that use them. On trunked radio systems, a different representation must be used since any frequency can be used by any agency on that system. Since a trunked radio system is at the mercy of the computer controller, it is beneficial to use the same representation that it does to identify the various agencies found on a system.

Are you certain you know the trunked system type (Motorola, EDACS, LTR)? There are some variations on each of these systems as well. In the Bearcat 780 you have to know the trunked system type. Have you set the system type for the appropriate bank? Before you set the system type through the Menu, the scanner asks you to confirm the bank into which you're programming the trunked system. Make sure you've got the correct bank number.

The Trunking means that the layer 2 management switch could be configured to have some ports on that switch to be one same data trunk to other same trunking switch devices, and to send any one data splitedly onto those ports at the same time simultaneously to other same trunking switch devices. This is a very important feature which could be used to increase the data bandwidth as times with number of ports in trunk between any two trunking switch devices.

Yes. You can create up to 22 trunk groups with the HP ProCurve Routing Switches. It is possible to use from two to eight ports (two to four ports prior to software version 7.5.x) for each trunk group.