Mitel 3300 - Page 259

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Hardware Reference
Figure 105: T1/E1 Combo Card - Resilient, from Release 7.0
Table 23: T1/E1 Combo Card Tip/Ring Assignments
Pin Signal
NT/LT Settings
NT (Default) LT
1 -- Rx Ring Tx Ring
2 -- Rx Tip Tx Tip
3 N/C -- --
4 -- Tx Ring Rx Ring
5 -- Tx Tip Rx Tip
6 N/C -- --
7 N/C -- --
8 N/C -- --
Note: Network and Line Termination settings are software-controlled. DO NOT
move the jumpers. The settings apply to both connectors on the resilient card.