3Com VCX V7122 SIP VoIP Gateway User Manual 23Table 8 cPCI LED IndicatorsLabel LED Color LED FunctionPWR Green Power is supplied to the boardThe cPCI board can now be removed.SWAP READY Blue The cPCI board was inserted successfully.For detailed information on the Swap-Ready LED seeBoard Hot-Swap Support on page 21 .During correct VCX V7122 operation, the ACT LED is lit green, the FAIL LED is off.Changing of the FAIL LED to red indicates a failure.Rear Transition ModuleThe VCX V7122 RTM includes a PSTN trunks and an Ethernet interfaces.The Ethernet interface features dual 10/100 Base-TX, RJ-45 shielded connectors for (anactive / standby) redundancy scheme providing protection against the event of a failure.The PSTN interface is provided with a choice of rear panels (1-span, 2-span, 4-span, 8-spanor 16-span).Rear panel with two 50-pin female Telco connectors (DDK 57AE-40500-21D) (see Figure 4)is required for a gateway equipped with up to 16 E1/T1 spans. Rear panel with RJ-48cconnectors (see Figure 5 on page 24) is required for a gateway equipped with 1, 2, 4, or 8E1/T1 spans. The physical difference between the 1-Span, 2-Span and 4-Span RTMs, andthe 8-span RTM is that the RJ-48c ports are depopulated correspondingly.Figure 4 Rear Panel with two 50-pin Connectors for 16 Trunks1 2 3
