Installation manual

CHAPTER 2. Hardware of OfficeServ 7400

2-14

2.3.2.2 TEPRI2

TEPRI2 provides the digital trunk line. A TEPRI2 module provides 2 ports for E1, T1,

ISDN and PRI respectively, and functions as the Q-SIG. This module transmits voice via

the trunk line and a channel transmits the voice data of 64 Kbps.

Main Functions

The TEPRI2 voice trunk line module performs the functions below:

y Selection function for T1/E1/PRI signal process through programming

y Function of a resistance circuit that satisfies both of the T1 (100 Ω) and E1 (120 Ω)

y Surge protection over the standard of International Telecommunication Union (ITU)

y Output port protection for line monitors

y Jitter function that satisfies ITU-T I.431 and G.703

y Providing selectable line codec (HDB3, AMI)

y Local/remote loop function

y Function for the HDLC or Common Associated Signaling (CAS) through the Common

Channel Signaling (CCS)

Specifications

The specifications of the TEPRI2 voice trunk line module are as follows:

y 2 trunk line ports

y E1: 30 channels per port

y T1: 24 channels per port

y PRI: 23 or 30 channels per port

Front View

The front view of the TEPRI2 voice module is shown in the figure below:

Figure 2.6 Front View of TEPRI2

RST

TEPRI2

AIS1 TP1

AIS2 TP2

P2 LAN SIO

RUN

CLK

SYN1

SYN2

LOS1

LOS2

L21

L22