Trunking for services such as electric cables, telephone cable and the like. The trunking comprises an elongate channel member and an elongate cover member dimensioned and arranged releasably to engage and close the channel member. The channel member has a base wall and first and second opposed side walls having free, elongate edge regions. The cover member has a top surface terminating in longitudinal side wall portions shaped to fit over the free edge regions of the channel member. A connector...

Extruded plastic trunking to cover, conceal, and protect cables or conduits on the surfaces of building walls, comprising a base strip with a channel groove to accommodate the conduit or cable and an overlying resilient curved cover strip arranged to make a snap fit with the base, having sloping flanks which extend close to the wall. The cover strip may be transparent and provided with a lining strip of the same pattern and color as the wall surface.

A multistage switch includes a matrix of coupled switch devices. A logical link comprising a plurality of physical links couples a destination through the plurality of physical links to a plurality of ports in the multistage switch. Each switch device performs trunk aware forwarding to reduce the forwarding of received frames through the matrix of coupled switch devices to the destination in order to reduce unnecessary traffic in the multistage switch.

Having the general form of an extrusion, a trunking accessory has a blade for attaching it to the trunking and a bead adapted to project from the trunking. The accessory can be used with trunking employed to house and protect electrical equipment.

A trunking assembly for electrical cables comprises a channel section housing having a longitudinal opening defined by the inturned edges of its side walls. Mounting rails extend along the free edges of the inturned side walls within the channel section and a backing box for an electrical component such as a socket outlet is adapted to be fitted within the channel section and fixed to the mounting rails by a clamping ring. The assembly of the backing box and clamping ring is a snap fit within th...

An Internet router treats plural output ports with a common destination as a composite port. A routing table uses the IP address to determine a composite trunk to which the packet is to be forwarded. A forwarding table identifies a route along a routing fabric within the router to a specific output port of the composite port. Output ports and fabric routes are selected to maintain order within a flow by routing the flow along a single fabric route to a single output trunk. The forwarding table m...

A network system dynamically controls data flow between physical links by logically combining multiple physical links into a single logical channel trunk, preferably to balance data flow carried by each link. Each link in the trunk has identical physical layer and identical media access control layer characteristics. A system server assigns a single media access control layer address to the single trunked logical channel, preferably randomly by hashing destination media access control layer addr...

Arrangement for establishing communication between a first mobile radio station and a second mobile radio station through a repeater over a radio frequency channel selected from a plurality of such channels. In an idle mode, a mobile station searches the channels for a predetermined group signal identifying it as belonging to a particular group of mobile stations. When that predetermined group signal is received on a channel, the mobile station is enabled on that channel so that it can communica...

An apparatus and method for providing direct trunking between a TDM switch and an backbone network are described. The apparatus is an interface adapted to convert pulse code modulated data to the data format of the backbone network and vice versa. The interface is adapted to emulate a trunk peripheral of the TDM switch by communicating with a computing module of the switch using a messaging protocol native to the computing module. The interface may therefore be connected to the TDM switch withou...

A section of trunking (20) has sides (22) which define a channel (34). Edge portions (32) of sides (22) are shaped so as to form further channels (34); Lid (26) has surface (29) and edge portions (30) which extend over channels (34) so as to form enclosed volumes. Screws (36) are used to fix lid (36) onto trunking section (20). Any water leaking through holes (38) and down the threads of screws (36) will be retained within channel (34) and will eventually dissipate between the side portion (30) ...