# Configuring Channelized OCx/STMx Interfaces

Use the procedures described in this chapter to configure channelized OC3/STM1 and OC12/STM4 (cOCx/STMx) interfaces on E Series Broadband Services Routers.

This chapter contains the following sections:

- Overview
- Platform Considerations
- References
- Before You Configure an Interface
- Configuration Tasks
- Configuration Examples
- Testing Interfaces
- Monitoring Interfaces