OfficeServ 7200 System Description
© SAMSUNG Electronics Co., Ltd.
2-15
2.3.2 Voice Trunk Line Board
This section describes the boards that offer the voice service of trunk lines.
2.3.2.1 TEPRIa
The T1/E1 Primary Rate Interface advanced (TEPRIa) uses a PCB identical to the
OfficeServ 7400‟s TEPRI2 board.
Major Functions
The TEPRIa performs the functions below:
Processes the T1/E1 signals by programming.
Resistor Terminations for T1 line (100
) and E1 line (120
).
Endures the ITU-recommended level of surge.
Protects the output port by monitoring line signals.
Crystal-less wander and jitter attenuation/compensation to TR62411.
Attenuates/compensates jitter as recommended in ITU-T I.431 and G703.
Provides the selectable line CODEC (HDB3, AMI).
Performs local/remote loopback for test.
Accommodates High level Data Link Control (HDLC) protocol in Common Channel
Signaling (CCS) mode or Common Associated Signal (CAS) mode.
Specifications
The specifications of the TEPRIa are as follows:
One trunk line port
E1: 30 channels
T1: 23 channels
PRI: 30 channels or 23 channels
Front View of the TEPRIa
The front view of the TEPRIa is shown in the figure below.
Figure 2.6 Front View of the TEPRIa
RST
TEPRIa
P1
AIS1
TP1
LAN
SIO
RUN
CLK
SYN1
LOS1
L21