Chapter 8: Hex E3/T3 Tributary Module, E3T3-6

Table Of Contents

Hex E3/T3 Tributary Module, E3T3-6

8.1  Module Description

8.1.1  Power Consumption

8.2  E3/T3 75 Ohm Electrical Interface

8.2.1  Connectors

8.2.2  Compliance

Hex E3/T3 Tributary Module, E3T3-6

8.1  Module Description

This module contains six E3 interfaces. See Figure 8-1. The E3 traffic is mapped into VC-3 containers and multiplexed together as described in "5.1  SDH Features" section on page 5-1. The interfaces can be configured to E3 or T3.The physical connector for the interface is the miniature 1.0/2.3 type.The module does not contain any IP functionality.The interface supports transparent data (G.703).

Figure 8-1 Hex E3/T3 Tributary Module

8.1.1  Power Consumption

The module power consumption is 11 W.

8.2  E3/T3 75 Ohm Electrical Interface

The interface is a 34Mbit/s E3 or 45Mbit/s T3 interface (configurable) according to ITU-T G.703, 75 ohm coaxial interface.

8.2.1  Connectors

The connector used is a 75 ohm coaxial connector type 1.0/2.3. The screen on the input and on the output connector is always DC coupled to ground.

8.2.2  Compliance

The E3 Interface Compliance is provided in

Table 8-1 E3 Interface Compliance

Standard

Comment

ITU-T G.703

Cable attenuation

Input reflection loss

Input port immunity against reflection

Output pulse mask

ITU-T G.783

Output jitter in the absence of input jitter

Output combined jitter

ITU-T G.823

Max. tolerable input jitter

Table 8-1.

Standard	Comment
ITU-T G.703	Cable attenuation Input reflection loss Input port immunity against reflection Output pulse mask
ITU-T G.783	Output jitter in the absence of input jitter Output combined jitter
ITU-T G.823	Max. tolerable input jitter