1. About the FrameSaver SLV1-8 September 2002 9128-A2-GB20-80 DSX-1 Drop/Insert Port. Allows DTEs/PBXs that support the DS1 signalformat to share the T1 network with other high-speed equipment so that voicetraffic can share the same local access circuit as the frame relay data. Back-to-Back Operation. Allows two FrameSaver devices to be connectedvia a leased-line network or simulation so a point-to-point configuration can beimplemented. Enhanced Ping Operation. FrameSaver devices can check connectivity androundtrip response time to any remote device in either direction, via theFrameSaver internal management network or the data path. Payload Management. Any standard, non-management DLCI can bedesignated as payload managed, providing management directly from a userdata PVC, and support for Telnet, ping, SNMP, and FTP. Optional ISDN Backup. FrameSaver SLV 9126 and 9126-II CSU/DSUs canbe equipped with a BRI DBM, which supports up to two channels. Thechannels may have different destinations. The DBM may be field-installed inthe FrameSaver SLV 9126 CSU/DSU, and must be factory-installed in the9126-II CSU/DSU.FrameSaver SLV 9128-II 1-slot units can be equipped with a PRI DBM, whichsupports up to 23 B-channels, or a BRI DBM. Carrier-mounted FrameSaverSLV 9128-II NAMs support a PRI DBM only.When an ISDN BRI or PRI DBM (Basic Rate Interface or Primary RateInterface Dial Backup Module) is installed, the following ISDN backup featuresare provided:— Provides automatic dial backup through the ISDN for data when primaryframe relay network or access line failures occur, then automaticallyrestores data to the primary route when service returns to normal. Backupis supported regardless of whether or not Caller ID is provisioned on theISDN circuit. A secondary backup phone number is also available to callwhen a backup link cannot be established with the primary backup site.— Supports simultaneous origination, answering, or origination andanswering backup calls, as needed, based upon how the ISDN LinkProfile is set up. This feature is also known as peer-to-peer calling.— Provides automatic configuration of an alternate route and DLCI forautomatically created PVCs at either the remote site or central site basedupon the learned far-end DLCI number. When the automatic backupfeature is enabled, backup and restoration occur automatically.— Provides backup timers that can be configured to better control theamount of time required before backup is initiated, when a backup call willbe terminated once the failure condition clears, and a delay before normalservice is restored. These features are useful during periods of frequentservice disruption.In addition, round trip latency thresholds can be configured that will initiatebackup when configured thresholds are exceeded.— Supports backup call groups, where redundant PVCs can be assigned toa specified call group. Using this feature, the unit only goes into backupwhenall PVCs in the group are down, and it returns to normal service assoon asone PVC in the group is operational again. This feature is usefulwhen multiple PVCs are going to redundant central sites.
