Chapter 1. Introduction

OPTION PORTS

The option ports vary depending on the option modules installed.

Secondary Interfaces (SI)

The secondary interface is an additional interface to a DS1, a DSX1 facility, or some other network service, and it offers a source of timing. The type of interface depends on the option module installed. The interface includes the following:

DSX1. Passthru for operation with a PBX (Terminal Interface - TI).

Full Drop and Insert. Permits the dropping of data and insertion of new data into the same DS0 time slot. This SI module includes a long haul DS1 interface. It can also be used as a second DS1 interface to provide an up to 3 Mbit aggregate throughput.

Other Data Interfaces

Additional data interfaces can be installed in the option slot, and include the following:

Nx56/64 serial interface. This module is the same as the base Nx interface but offers single or dual V.35 ports.

Voice interface. 2/4 channel FXS/FX0/E&M.

OCU DP. Interfaces to DDS or 4-wire Switched 56.

Dial backup.

12

TSU 600 User Manual

61200.076L2-1

Page 24
Image 24
ADTRAN TSU 600 user manual Option Ports, Secondary Interfaces SI, Other Data Interfaces