摘要:
The present invention provides a method to configure the hardware and software resources in a system to utilize two physical interface boards in pairs such that their aggregate units of voice processing DSP resources can be applied to either all of a T1 board's physical interfaces or all of an E1 board's physical interfaces. This allows a single telecommunications system to run as either T1 or E1 with no additional hardware required. The present invention also provides the ability to run protocols normally associated with T1 physical interfaces on a card with only E1 physical interfaces. A method for changing the configuration from T1 to E1 and from E1 to T1 is provided as well. Additionally, the method includes configuring the system to look like a single set of contiguous T1 or E1 channels. Additionally, the method allows for monitoring audio by switching the Pulse Code Modulated (PCM) audio streams from/to an audio enabled resource board and switching between listening to Mu-law encoded audio for T1 and A-law encoded audio for E1. The present invention also permits the system to be cabled as T1 and E1 at the same time.
摘要:
An electrical connector assembly having improved conductivity and continuity. A snap in or push in electrical connector having a zinc body and spring steel components plated with high conductivity metal, such as tin, providing a reduced voltage drop across the attached electrical connector. In an embodiment, a connector assembly has a connector body having opposed end openings provided with an outer surface that slopes downwardly toward the outlet opening. The inlet opening having placed therein cable retainer inserts. A sloping or frustro-conical, snap fit, snap in, or push in outer retaining ring with locking tangs is provided for snap locking the outlet end portion of the connector body to an electrical box or panel. Improved conductivity or continuity is obtained and a good electrical ground is formed between the electrical box and connector assembly.
摘要:
An adjustable ground clamp for easy positioning onto electric conduits of different diameters. A first and a second jaw are pivotally connected and have differently angled jaw surfaces. A distal end of the first jaw has an elongated hole and a distal end of the second jaw has a curved fork having a slot for receiving a bolt with a cylindrical nut. A fastener connects a ground conductor or wire to the ground clamp. The differently angled jaw surfaces, curved fork, cylindrical nut, and the elongated hole result in a ground clamp capable of securely holding electrical conduits of different sizes or diameters without disassembly. The jaws may be easily separated for placement of an electrical conduit without separating or detaching any parts from the ground clamp, making attachment to an electrical conduit quick, easy, and secure.
摘要:
A moisture proof, telescoping coupler assembly for electric metal tubes and threaded rigid pipe with an enhanced grounding arrangement both internally and externally for electrically grounding the telescoping tube to the coupler body, Moisture proof sealing is improved by centering the electric metal tube within the coupler body adjacent the seal preventing possible leaking after securing the electric metal tube to one end. A modified arrangement utilizes a snap fitting retaining ring for securing an electric metal tube to the coupler body to provide for unidirectional insertion of an electric metal tube into the open end of a coupler body in a manner that prohibits unintentional separation of the tube and/or retainer ring from the coupler body.
摘要:
An electric wire identifier that includes an anti-short bushing in the form of an electrical insulating ring-like insert fitted onto the end of a metal or armored clad cable that defines the terminal end of the armored cable or into the end of an electrical connector that is generally inserted through a knock-out hole of an electric box or panel, and which bushing includes an integral extension or surface capable of retaining thereon suitable identifying indicia that is rendered visible throughout the lifetime of the electrical installation. In another form of the invention, the wire identifiers, in the form of a label or tag having a loop attachment that may be arranged in a tree or roll whereby the individual labels or tags can be readily dispensed as needed.
摘要:
An apparatus and method for testing a telecommunication system, which runs telephony applications such as voice-mail, telephone banking systems, automated directory assistance, and multi-branched telephone customer service systems. The apparatus includes a test computer for scheduling and controlling the execution of test scripts, which include commands for generating network signaling, voice data, and digital data used to simulate transactions that typically take place on the telecommunication system; a database for storing the test scripts, test script input data, and test results; channels for running multiple test scripts in parallel; and, serial and voice ports for transmitting and receiving voice data and digital data to and from the telecommunication system.
摘要:
An electrical fitting in the form of a connector or coupler for connecting an electrical metallic tube or EMT to an electrical box or panel or to one another. A unidirectional locking device is disposed in an outermost chamber and an O-ring is disposed in an intermediate chamber. The unidirectional locking device has gripping tangs. The intermediate chamber and gripping tangs are sized so as to prevent the gripping tangs from contacting the O-ring. A contact shoulder is used on one end of the fitting to prevent excessive compression of a sealing washer. Internal longitudinal radially increasing ribs are formed in the fitting body improving continuity and support for the EMT. A tube support may also be provided to prohibit any undesirable bending movement of the EMT connected thereto.