ACCULINK 316x DSU/CSU1-2 December 1996 3160-A2-GB22-10• Independently selectable DTE interfaces (V.35,EIA-530A, V.11, and/or RS449/422).• Flexible timing source, available from theT1 network interface, the DSX-1 T1 interface, atleast one of the synchronous DCE data ports, aninternal clock, or an external clock.• Flexible, user-friendly channel allocation.The 3160/3164 DSU/CSUs are available in a compactstandalone case (Figure 1-1) that can be mounted on adesktop, shelf, or wall. The 3161 DSU/CSU is availableas a circuit card that is installed into a COMSPHERE3000 Series Carrier.FeaturesThe 316x DSU/CSU offers a wide variety of features:• Integral modem for 3160/3164 DSU/CSUs onlywhich enables remote operation to enhanceserviceability and increases uptime.• User interfaces for access to configuration andalarm information.• Front Panel Emulation via Windows -based frontpanel emulation software.• Front panel pass-through to access a remote3160/3164 DSU/CSU.• Async terminal interface support.• DSX-1 Drop/Insert port.• Front Panel Access Control feature.• SNMP Management Support.Integral ModemThe 3160/3164 DSU/CSUs contain an integral modemthat enables communication with remote devices such asanother 316x DSU/CSU, or an ASCII terminal or printer.This is a low-speed (2400 bps), V.22bis dial modem thatprovides remote dial-up capability to supportdownloading, pass-through, alarm reporting, and remoteconfiguration and diagnostics. The integral modem canalso communicate with a PC running the 3100 SeriesFront Panel Emulation software accompanying the 316xDSU/CSU.User InterfaceThere are three ways of accessing the user interface:• Front panel – provides an LCD and a keypadwhich enable you to display information about andinteract with the DSU/CSU. A menu tree isavailable which enables control of the DSU/CSU inthe network (see Appendix A, Front Panel Menu).• COM Port – used for 3100 Series Front PanelEmulation software which displays the DSU/CSUfront panel on a PC and provides the samefunctions as the actual front panel. It is also usedfor the async terminal connection (3160/3164 only).For Model 3161 DSU/CSUs, only one slot in thecarrier can be configured as the COM port; all slotsshare the PC.• MODEM Port – provides 3160/3164 DSU/CSUfunctionality from a PC attached either remotely orby using pass-through via another DSU/CSU(3160/3164 only). It is also used for the asyncterminal connection. This port is located only on3160/3164 DSU/CSUs.Alarm InterfaceThe 3160/3164 DSU/CSU can be attached, eitherlocally or remotely, to an ASCII terminal or printer todisplay/print alarm messages. The COM and MODEMports can be used as destinations for Alarm Set and AlarmClear messages. This enables an ASCII terminal/printer orasync terminal to be used to monitor the DSU/CSU foralarm conditions, but provides a potential conflict if theCOM or MODEM port is also the current active physicalinterface. If this occurs, the user interface functions havepriority over any alarm messages that are sent to thecurrently active physical interface.Alarms can also be displayed on a PC that is using aterminal emulation package.Model 3160/3164 DSU/CSUs can be configured togenerate traps on alarms which can be sent to an SNMPmanager via either the MODEM or COM port.
