T3 Controllers

You can configure the STS-1 frame to carry a single T3 signal through asynchronous mapping. As Figure 9 shows, T3 on cOCx/STMx interfaces supports the following options:

• An unchannelized T3 controller
• A T3 controller channelized to DS0 (fractional T1). To configure fractional T1 over T3 on cOCx/STMx interfaces, you assign timeslots (also known as subchannels) to the T1 channel. Each T1 channel supports 24 T1 timeslots.

For any configuration, you must identify the path and each controller in the layers above the path layer. For example, for a T3 controller channelized to T1, you must identify the path channel, the T3 channel, and the T1 channel. Table 14 presents the identifiers for the T3 configurations.

Table 14: Identifiers for T3 Controllers

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