Installation manual

CHAPTER 2. Hardware of OfficeServ 7400
2-12 © SAMSUNG Electronics Co., Ltd.
2.3.2 Voice Trunk Line Module
This section describes the modules that offer the voice service of trunk lines.
2.3.2.1 TEPRIa
The TEPRIa board provides the digital trunk line. A TEPRIa module provides E1, T1,
ISDN and PRI, and functions as the Q-SIG. This module transmits voice via the trunk line;
each channel supports 64 Kbps voice data transmission.
Major Functions
The TEPRIa voice trunk line board 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 Provides the Jitter characteristic that meets both ITU-T I.431 and G.703.
y Provides selectable line encoding methods (HDB3, AMI)
y Local/remote loop function
y Function for the HDLC or Common Associated Signaling (CAS) through the Common
Channel Signaling (CCS)
Specification
The specifications of the TEPRIa voice trunk line module are as follows:
y Trunk Port: 1 Port
y E1: 30 Channels
y T1: 24 Channels
y PRI: 30 Channels or 23 Channels
Front View
The front view of the TEPRIa voice trunk line board is shown in the figure below
Figure 2.5 Front View of the TEPRIa Board
RST
TEPRIa
P1
AIS1 TP1
LAN SIO
RUN
CLK
SYN1 LOS1 L21