System Hardware Manual
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System Specifications
Chapter 2
S
ECTION
1
G
ENERAL
I
NFORMATION
This chapter provides the technician with detailed specifications for the Xen
Master and Xen Axis systems. The technician should review this
information carefully
before
installing the systems.
S
ECTION
2
S
YSTEM
B
LOCK
D
IAGRAM
Figure 2-1 System Block Diagram represents an installed system. This
diagram shows the ETUs that can be installed in the KSU and the number
of channels that are supported when the ETU is installed. Table 2-1 List of
Abbreviations lists abbreviations that are used in the diagram.
Table 2-1 List of Abbreviations
Abbreviation
Description
AMP
Amplifier
APR
Analogue Port Ringer
BSC
Base Station Controller (PHS)
BIU
Base Station Interface Unit (PHS)
BSU
Base Station Controller and Interface (PHS)
BRT
Basic Rate Trunk Interface (ISDN)
CNF
Conference
COI
Central Office Interface
COID
Central Office Caller ID
COM
Communication
CPU
Central Processing Unit
CTA
Computer Telephony Adapter
CTI
Computer Telephony Integration
CTU
Computer Telephony Adapter with USB port
DID
Direct Inward Dialling
DPH
Door Phone
DTI
Digital Trunk Interface
ECR
External Control Relay
ESI
Electronic Station Interface
HDLC
High Level Data Link Control
