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Chapter 1
Configuring Channelized T3 Interfaces
Overview
MDL/FDL Support
Use the procedures described in this chapter to configure channelized T3 (CT3)
interfaces on E Series Broadband Services Routers.
This chapter contains the following sections:
Overview on page 3
Platform Considerations on page 5
References on page 9
Before You Configure an Interface on page 9
Configuration Tasks on page 10
Configuration Example on page 23
Testing Interfaces on page 23
Monitoring Interfaces on page 28
Channelized T3 interfaces are supported by the modules described in this chapter.
Configuration procedures for all channelized T3 physical interfaces are identical;
however, the capabilities of the modules differ. Each port on a CT3 module offers a
total bidirectional rate of 43.008 Mbps.
This section describes the features of channelized T3 interfaces. For information
about configuring channelized T3 interfaces over SONET/SDH, see "Configuring
Channelized OCx/STMx Interfaces" on page 109.
Channelized T3 interfaces on some line modules support maintenance data link
(MDL) messages at the T3 level and facilities data link (FDL) messages at the T1 level.
For a list of the line modules that support MDL and FDL, see ERX Module Guide,
Appendix A, Module Protocol Support.
You can use MDL and FDL messages to determine the status of a link and to display
statistics for the remote end of a connection. MDL and FDL messages do not interfere
with other data transmitted over the link.
3
Overview
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