Chapter 1. Introduction
1-2 Dual Nx56/64 Option Module User Manual 61200142L1-1
Dual Nx56/64 V.35 Option Module and Plug-on Board Description
The Dual Nx56/64 V.35 option module operates in the
option slot of the TSU/TDU/ESU products, while the
plug-on board operates as a plug-on to any option mod-
ule. Both are under the control of the TSU/TDU/ESU
product. The option module and the plug-on board are
configured from the front panel or by an external PC pro-
gram. The internal menus for their configuration are part
of the option module and plug-on board and are automat-
ically installed when either is plugged into a TSU/TDU/
ESU product.
Features of the Dual Nx56/64 V.35 Option Module
• Operates using one to twenty-four DS0s (32 in E1).
• Includes an elastic store for absorption of rate varia-
tions
• Outputs a 50 percent duty-cycle output clock at all
rates
• Menu operation for easy configuration
• Executes and responds to V.54 looping codes
• Generates and checks a 511 test pattern
• Performs an extensive self-test
• Supports multiport dial backup operation
• Provides inband channel network management com-
munication
Interfaces
• CCITT V.35 electrical (differential)
• 26-Pin Subminiature D (Amp PN 786200-1) to V.35
Winchester
Two cables are included with this product. See Appendix B for a detailed
description of these cables.