May 2001
System Hardware Manual
5 - 113
A6-32
400
0-6
42-0
1
–
R
e
le
as
e 4
.0
Ma
y 2
001
3.3.3
Connectors
Before programming System Data, the battery must be
connected to CN4 to allow memory retention if a power
failure or brownout occurs. If a brownout or power failure
does occur, and the battery backup circuit is not activated,
System Data resets to the default values, all stations in the
system reset to the default values, and any data
programmed on individual stations is cleared.
The following connectors are located on the MBD-
U13 ETU.
✆
MOH IN
For Music on Hold input
✆
PFT
For Power Failure Transfer
✆
COM1
For LCR/PC programming
✆
COM2
For SMDR
✆
CN4
For backup battery
✆
CN5
Connects to CN1 of the CLKG-U13
Unit
✆
CN6
Connects to CN2 of the CLKG-U13
Unit
✆
AMP1
MDF cabling connection for slots 1, 3,
4
✆
AMP2
MDF cabling connection for slots 5, 6,
7
✆
CN403
Power Supply connection
On
System boot by EPROM
Off
System boot by Flash ROM
SW3-2
Description
Off
Not Used
Pressing SW2 interrupts all service and causes
a second initialization. This switch should not
be used in an operating system unless
absolutely necessary.
!
Содержание Xen Master
Страница 1: ...System Hardware Manual NEC Australia Pty Ltd A6 324000 642 01 Release 4 0 May 2001...
Страница 37: ...May 2001 System Hardware Manual 2 19 A6 324000 642 01 Release 4 0 May 2001 Figure 2 1 System Block Diagram...
Страница 123: ...May 2001 System Hardware Manual 5 105 A6 324000 642 01 Release 4 0 May 2001 Figure 5 7 CPUB U13 ETU...