Paradyne COMSPHERE 3550 Series User Manual

Also see for Comsphere 3551: Installation manual Quick reference guide

Contents

COMSPHERE 3550 Series Data Service UnitsGlossary-6 July 1999 3550-A2-GB20-40Remote Digital Loopback(RL)A test typically used when testing an external device. A test message from theexternal device is looped back from the receiver to the transmitter in the remotedevice, then returned to the local DSU. An RL puts the remote DSU or device intoDigital Loopback.RTS The state of the Request-to-Send lead.RXD The state of the Received Data lead.session disruptive Application data may be disrupted when running a test, or running the test maycause the application session to be dropped or terminated. The result depends uponthe front-end processor, the time-out parameters, etc.session-nondisruptivediagnosticsDiagnostic messages with a duration of .5 seconds or less that are sent over theprimary data channel. These messages may interrupt customer data, causing errorsrequiring retransmission of data blocks. They should not, however, causetermination of the communication session.Shared DiagnosticControl Panel(SDCP)A feature that allows carrier-mounted DSUs to share the same control panel.Installed on one COMSPHERE 3000 Series Carrier, it controls and monitors theDSUs in all the carriers in the cabinet. A single SDCP can control up to eightcarriers, with a total of 128 DSUs and, if present, 128 DBMs.Shared Diagnostic Unit(SDU)A circuit card that plugs into a dedicated slot (slot 0) in the COMSPHERE 3000Series Carrier to provide the shared diagnostic control panel (SDCP) and networkmanagement interfaces to the DSUs in the carrier. It translates the networkmanagement protocol to the devices in the carrier and routes incoming messages tothe appropriate slots.standalone The Model 3550 DSU which is designed for desktop operation. A standalone DSUcan be configured as either a control or a tributary.Time Division Multiplexer(TDM/Flex)A circuit card that supports time division multiplexing on two ports, and which canalso increase digital-sharing capability.training The process of negotiating a communication rate between V.32 modems during callsetup.transmitter A circuit capable of generating, modulating, and sending a signal forcommunication, control, or other purpose.tributary A DSU or modem that is, for diagnostic purposes, at a logically subsidiary level ina hierarchical network. Tributary DSUs in a network receive data from the controlDSU, as well as from any network management system present in the network.TXD The state of the Transmitted Data lead.UL Underwriters Laboratories, Inc.USOC Universal Service Ordering Codes.6700 Series NetworkManagement System(NMS)A Paradyne automated network management system that allows an operator tomonitor network conditions, analyze problems, and take restorative measures froma single personal computer (PC) workstation. This NMS operates in a MicrosoftWindows graphic environment.