# Platform Considerations

You can configure Frame Relay interfaces on the following E Series Broadband Services Routers:

- ERX1440 router
- ERX1410 router
- ERX710 router
- ERX705 router
- ERX310 router

  | Note: The E120 and E320 Broadband Services Routers do not support configuration of Frame Relay interfaces.

## Module Requirements

For information about the modules that support Frame Relay interfaces on ERX14xx models, ERX7xx models, and the ERX310 router:

- See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
- See ERX Module Guide, Appendix A, Module Protocol Support for information about the modules that support Frame Relay.

## Interface Specifiers

The interface specifier format that you use depends on the type of physical interface on which you want to configure Frame Relay.

For more information about supported interface types and specifiers on E Series routers, see Interface Types and Specifiers in JunosE Command Reference Guide.