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CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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Using CPOS Interfaces to Converge E1/T1 Lines

Using CPOS Interfaces to Converge E1/T1 Lines

As shown in Figure 15-7, some enterprise branches use mid-range and low-end routers to access the SONET/SDH network through E1/T1 lines. To obtain high bandwidth, other branches require several leased E1/T1 lines.

The SONET/SDH network converges E1/T1 lines of all branches to one CPOS interface or several CPOS interfaces. The CPOS interface connects the E1/T1 lines to RouterA, and RouterA identifies each mid-range and low-end router based on the timeslot. Logically, each mid-range and low-end router is connected to RouterA through the E1/T1 line or several E1/T1 lines.


In practice, there may be more than one level of transmission networks between CPOS interfaces and mid-range and low-end routers. The mid-range and low-end routers may require other transmission devices to connect to CPOS interfaces.

Figure 15-7  Using CPOS interfaces to converge E1/T1 lines through SONET/SDH network

As shown in Figure 15-8, some enterprise branches use mid-range and low-end routers to connect to the CPOS interfaces. The CPOS interfaces are configured to aggregate E1/T1 lines of each branch.

Figure 15-8  Configuring CPOS interfaces to directly converge E1/T1 lines

Updated: 2019-03-06

Document ID: EDOC1100069331

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