RAD Industrial Partner

RAD DXC-30 Modular Digital Cross Connect 4/8-Port E1 Interface Modules Simple Type: I/O Controller

4 or 8 port E1 interface modules for the DXC family of modular digital cross-connect units. D4E1 and D8E1 are 4- or 8-port E1 interface modules used with the DXC-8R, DXC-10A and DXC-30 modular digital cross-connect units (not including DXC-100). The modules provide E1 links over copper cable and operate at E1 or fractional E1 rates. D4E1 and D8E1 support both 2 and 16 frames per multiframe (256N and 256S), as well as 2 Mbps unframed mode per ITU-T Rec. G.703. For long-range applications, D4E1 and D8E1 feature an integral LTU option, ensuring ranges of up to 2.2 km (1.4 miles). The line interface for D4E1 terminates in four RJ-45 connectors while D8E1 terminates in one DB-44 connector. The interface detects the type of cable attached and provides 120O balanced or 75O unbalanced E1 depending on the adaptor cable (see Ordering). Setup, control, and diagnostics can be performed via a supervisory port using an ASCII terminal, or by RADview-EMS. The diagnostic capabilities include localremote, and inband code-activated loopbacks on each E1 port. Single-slot line redundancy (1:1) ensures protective switching between ports on the same module, within less than 50 msec. LED indicators on the front panel alert the user to sync loss on the local or remote units. When used in signaling monitoring applications, the D4E1 and D8E1 modules enable DXC to collect signaling timeslots (such as SS7) from multiple leased lines and groom them over a single full E1 link to the protocol analyzer at a central site. The modules occupy one I/O slot in a DXC-8R, DXC-10A or DXC-30 chassis.

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