Connectors; Connections - NEC Electra Elite IPK II System Hardware Manual

Electra Elite IPK II
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System Hardware Manual
Excessive Bipolar Violation (BPV) Detection
On red when excessive BPV is detected.
Line Synchronization Alarm (LSA) Detection
On red when an FT1 trunk loses frame synchronization.
Out-of-Frame (OOF) Condition Detection
On red when two of the four or five framing data bits received
are in error.
Remote Alarm Indication (RAI) Detection
On red when RAl is received.
5.9.6

Connectors

The following connector is included:
CN1
CN3
5.9.7

Connections

Although the DTI-U40 ETU can connect directly to the Telco TI
Smart Jack, your Telco may require you to purchase and install a
separate Channel Service Unit (CSU) between the Smart Jack and
the DTI-U40 ETU.
Connects to the backplane.
Serial Port DB-9
TELCO
T1
CSU/DSU
Provider
TELCO
T1
Provider
Figure 6-27 DTI-U40 ETU Connectors
Document Revision 3
MDF
TA
4-Wire TB
Cable
RA
RB
MDF
TA
4-Wire
TB
Cable
RA
RB
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