System Hardware Manual 2 - 17
A6-324000-642-01 – Release 4.0
May 2001
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
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