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OCx/STMx ATM IOAs

The ES2 4G LM pairs with the ES2-S1 OC3-8 STM1 ATM IOA to deliver unchannelized OC3/STM1 ATM operation through eight line interfaces. You can install the ES2-S1 OC3-8 STM1 ATM IOA in both IOA bays.

The ES2 4G LM also pairs with the ES2-S1 OC12-2 STM4 ATM IOA to deliver unchannelized OC12/STM4 ATM operation through two line interfaces. You can install the ES2-S1 OC12-2 STM4 ATM IOA in both IOA bays.

The interface stack for both of these IOAs is the same as for OCx/STMx/DS3-ATM interfaces. (See Figure 5.)

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