Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

Contents

USER’S GUIDE310 CyberSWITCHSEMIPERMANENT CONNECTIONS CONFIGURATION E LEMENTSD EVICE N AMESpecify the device name (from the Device List) that you wish to make a semipermanent connection.Once specified, the semipermanent feature will (at least) keep the Initial Data Rate active to thespecified device, as long as it is not prohibited by call restrictions or a physical or configurationproblem. The number of semipermanent devices is limited to the maximum number of calls theCyberSWITCH supports.M AX RETRIESThe maximum number of times the CyberSWITCH will retry a call in the Over Interval time period.The default is 10.O VER I NTERVALThe time period in minutes during which the CyberSWITCH will keep track of the number ofdisconnects. For example, a disconnect will occur if the device fails authentication. The timer beginswhen the first disconnect occurs, and if the timer expires without reaching the maximum numberof disconnects, the disconnect counter is rest. Otherwise, if the maximum number of disconnect isreached, then the device is moved to the rejected state. The default is 10 minutes.S ESSION I NTERVALThe time period beginning when the device enters the rejected state. When the timer expires, thedevice is returned to the trying state and the CyberSWITCH attempts to connect to the device. Thedefault is 60 minutes. “N/A” appears when the CyberSWITCH will not attempt a call again after arejection.Note: When the Session Interval is configured, a device can fail authentication, move to therejected state, move back to the trying state after the timer expires, and fail authenticationagain. This cycle can repeat an infinite number of times, depending on the status of callrestrictions. The CyberSWITCH will not stop this cycle until a call restriction limit hisreached or it is overridden by the system administrator by issuing thedisc devicecommand.SEMIPERMANENT CONNECTIONS BACKGROUND I NFORMATIONIn many areas, ISDN is tariffed by call, and not by connect time. This feature is ideal for areas likethis. Semipermanent connections allow you to automatically make a connection at startup time,and keep that connection up at all times.Although semipermanent connections are up at all times, they are different from dedicatedconnections. A dedicated connection is simply a Layer 1 pipe for data. A semipermanentconnection is one or more switched calls made at startup and kept until shutdown.The sections below provide information concerning how semipermanent connections interact withother system features.I NTERACTIONS WITH O THER FEATURESCall Device CommandsIssuing thecall device ordisc device commands will effect the semipermanent connection.These commands will override the semipermanent connection.