Abstract: An apparatus and a method are disclosed for clamping cable. The apparatus has an elongate body having an interior passage extending from a first end to a second end. An end of the cable inserts into the first end, is pushed through the interior passage, and pushed out the second end. A roller is mounted within the interior passage, and the cable rolls along the roller as the cable is pushed through the interior passage. A wedge slides within the body to a position adjacent the roller, and the wedge clamps the cable between the roller and the wedge. Tension in the cable in one direction causes the wedge to slide away from the roller, thus permitting the apparatus to be slid along the cable to a desired location. Tension in the opposite direction, however, causes the wedge to slide to the roller, thus clamping the cable within the apparatus.

Abstract: An apparatus is disclosed for pulling communication cable through conduit. The apparatus has a winch mounted to a stand. The stand includes a base connected to an upper frame by at least three supports. At least one of the supports is pivotally mounted to at least one of the base and the upper frame such that the upper frame collapses toward the base. The stand is positioned above the conduit, the communication cable is attached to the winch, and the winch is used to pull the communication cable through the conduit.

Abstract: A method and system for sending information to a pager regarding information pertaining to a previously occurring telephone call. After receiving a call offered to a called party, a signal is transmitted from a switch to a service control point, which then obtains transmitted information relating to the call. A signal is transmitted from a service control point to a switch to instruct the switch to process the call. Another signal including the information relating to the call is transmitted preferably from the service control point to a service node and then to a communications service provider. The communications service provider is preferably a paging service provider which transmits a page including the information relating to the call to a pager associated with the called party. The information relating to the call then may be displayed on the pager.

Abstract: An optical amplifying unit (100; 100′) for amplifying optical signals in an optical transmission system has an amplification wavelength band with a lower wavelength limit greater than 1570 nm and includes an input (101) for the input of optical signals, an output (102) for the output of optical signals and an optical amplifier (104) interposed between the input (101) and the output (102) to amplify the optical signals. The optical amplifier (104) includes an amplification fiber (108) co-doped with erbium and ytterbium, at least a pump source (109, 110) to generate pump radiation and at least an optical coupler (111, 112) optically coupling the pump sources (109, 110) to the amplification fiber (108). The optical amplifying unit has a power gain of at least 31 dB when the optical signals have an input power of at least −10.5 dBm and wavelengths within the amplification wavelength band.