Chapter 1. Introduction
61200142L1-1 Dual Nx56/64 Option Module User Manual 1-3
• Loopbacks
Port (toward the network)
DTE (toward the DTE)
• Both loopbacks can be invoked locally or remotely
(V.54)
Dual Nx56/64 V.35 Option Module Specifications
DTE Interface
CCITT V.35 Synchronous
Rates
56 kbps to 1.536 Mbps (T1) and 2048 Mbps (E1) in 56K or
64K steps
Clock Options
Normal, Inverted
Tests
• Local Loopback (Bilateral) - Menu activated
• Remote Loopback (V.54) - Menu activated
•Self-test
Test Pattern
511 with errored seconds display and error inject capabil-
ity
Data Inversion
Menu selectable
1s Density Protection
Force 1s to network after one second of consecutive zeros
from DTE.
Choices: On or Off
CTS, DCD, DSR Options
Choices: Normal or Forced On
Connector
26-Pin Subminiature D