Vanguard Managed Solutions 342 Configuring the Serial Interface, Interface Type, Interface Option

Configuring the Serial Interface

Introduction	This section describes the serial interface and explains how to configure your
	Vanguard 342 for various communication interface types. These topics are
	discussed:
	•	Setting the Interface Type
	•	Setting the Interface Options

The Serial Interface The Vanguard 342 supports a software-programmable serial interface that is integral to the motherboard. Port 3 supports the serial interface and can be configured to function as a fixed Data Interface Module, providing communication using these interface types:

•V.24

•V.35

•V.36

•X.21/V.11

Note

The serial interface supports only DCE mode but can accommodate DTE with the use of a crossover adapter cable. For information on DTE capability, refer to the “Setting the Interface Options” section on page 3-10.

The Serial Interface The serial interface is supported in the Port Configuration menu and can be

Parameters configured using the Control Terminal Port (CTP). Included in the Port Configuration menu, are two parameters that allow you to set both the communication and electrical interfaces. These parameters are:

Interface Type

This parameter allows you to set the communication interface type (physical layer protocol) on Port 3. The interface types include: V.24, V.35, V.36, and X.21/V.11.

Interface Option

This parameter allows you to specify the traditional hardware strap used in V.24 Vanguard Daughtercards and electrical interface for V.35, V.36, and X.21/V.11 cabling operations.