®
TRANSPORT
1544E ESF CSU Configuration Guide
Index Indicator Front Panel Description
1 POWER This green LED lights whenever power is applied to the 1544E unit.
2 BPV/CRC
/FBE
3 AIS This red LED lights if an unframed all ones signal is detected from the network or DTE.
4 LOS This red LED flashes with Loss Of Signal from the network or the DTE.
5 YELLOW This red LED lights if a yellow alarm (far end receiver out of sync) is detected from the network or the DTE.
6 DENSITY This red LED lights if the ones density of the received data from the DTE is less than 12.5%.
7 LINE LOOP This yellow LED lights if the unit is in a line loop condition.
8 TEST LOOP This yellow LED lights if the unit is in a local or remote test loop. It flashes if the DC loop pair is activated.
9 SET/RESET This yellow LED flashes if a set or reset code is being transmitted. It lights if a test is in progress.
10 NET FAULT This red LED flashes in conjuncti on with Indicators 2, 3, 4, and 5 to show that the detected fault or error is coming from
11 DTE FAULT This red LED flashes in conjunction with Indicators 2, 3, 4, and 5 to show that the fault or error is coming from the DTE.
12 Test Jacks These bantam jacks provide access to the T1 line on the DTE side. Refer to the detail on this page.
13 TEST This is a 3-position rocker switch used for performing a network test or a local loopback. See description below.
14 T-View port Provides direct terminal access for controlling the CSU and gathering status and facility performance data.
15 Brackets Use the 2 hol es on each bracket to bolt the 1544E to the rack mount kit or wall.
The NET jack access ports break connection to the DTE and
TOP:
make connection to the CSU in the direction of the network.
MIDDLE:
The MON ports are used for monitoring the signals
passing through the CSU (between the DTE and the network).
BOTTOM:
The DTE ports break connection to the CSU and make
connection to the DTE.
Receive signal
from the network
Monitor signal
from the network
Transmit signal
to the DTE
This red LED lights (0.1 seconds minimum) for each occurrence of Bipolar Violations (BPV),
Cyclic Redundancy Check errors (CRC), or Frame Bit Errors (FBE).
It lights constantly if an Out Of Frame (OOF) condition is detected.
the network. It lights if a CPU fault has occurred or a fault condition exists on the network.
Test Jack Access Ports
TEST
NET
loop code is transmitted for 5 seconds.
NRM
Test Switch
(network test): When depressed, the CSU
(normal operation): When moved from
NET back to NRM, the CSU sends a loop down
code. When moved from LOC back to NRM, the
N
E
T
M
O
N
D
T
E
Transmit signal
to the network
Monitor signal
from the DTE
Receive signal
from the DTE
local loop back is removed.
(local loopback): When depressed, the CSU
LOC
performs a local, bidirectional loop.
DTE NET
10
11
12
13
14
15
Part Number 45-00017
Rev 1.00
TRANSPORT
T-VIEW
1544/E
1
2
3
4
5
6
7
8
9
T-VIEW PORT
®
POWER
BPV/CRC/FBE
AIS
LOS
YELLOW
DENSITY
LINE LOOP
TEST LOOP
SET/RESET
NET FAULT
DTE FAULT
N
E
T
M
O
N
D
T
E
TEST
NET
NRM
LOC
1544E Front Panel
TRANSPORT
TxPORT Customer Service
127 Jetplex Circle
Madison, Alabama 35758
Customer Service Returns:
800-926-0085, ext. 227
Product Technical Support
(8 a.m. to 5 p.m.)
800-285-2755 or
205-772-3770, ext. 255
After Hours Hot Line:
205 -551-7538
LBO Level
Sets the output signal le v el of
transmitted data. The Telco
should provide the proper
setting. If unsure of the exact
setting, then set to 0 dB.
®
Pos Function Switch SW2 Description
1Network
Framing
2 DTE Line
Framing
3Line
Code
4/5 Network
Line Keep
Alive
6Zero
Suppression
7Test
Pattern
8 Yellow
Alarm
Network Interface DTE Interface
Pin Designation
1 Input (Ring)
2 Input (Tip)
4 Output (Ring)
5 Output (Tip)
7, 8 Ground
ESF - Formats the network side of the CSU to Extended Superframe Format.
D4 - Formats the network side of the CSU to D4.
ESF - Formats the DTE side of the CSU to Extended Superframe Format.
D4 - Formats the DTE side of the CSU to D4.
AMI - Sets the line code for the DS-1 signal to Alternate Mark Inversion.
B8ZS - Sets the line code for the DS-1 signal to Bipolar 8 Zeros Substitution.
and S5=0 - Keep Alive Signal is unframed all ones.
S4=0
S4=0 and S5=1 - Keep Alive signal is framed all ones.
S4=1 and S5=0 or 1 - Keep Alive signal is the activation of the line loop back.
- ones density enforcement enabled.
15
50 - ones density enforcement di sabled.
QRS
- sends a QRS pattern during a network test.
Clear - traffic from DTE is passed through to the network during network test.
NORMAL
TRANSCODE - D4 Yellow Alarm is bit 2 set to 0 in all frames.
- D4 Yellow Alarm is in S-bit of frame 12.
T-View In
Pin Designation
1 Output (Ring)
2 Output (Tip)
4 Input (Ring)
5 Input (Tip)
7, 8 Ground
Pin Signal
1 Ground
2Tx Data
3Rx Data
4 Ground
T-View Out
Pin Signal
1 Ground
2Tx Data
3Open
4 Ground
NOTE: All factory default settings are
shown underlined. This unit is factory preset
for normal operation. It may be installed and
operated without any adjus t ment .
Mounting
Brackets
Ground and
Cable Strap
Network
Interface
Network
Output
Network
Input
LBO
-48 VDC
VDC RTN
Chassis
Ground
DC
Loop
8
S
W
1
1234567
0
7.5
15
Address
CSU
LBO
Address Switch SW1
This DIP Switch is used to provide up to 252 unit addresses.
The System Controller will recognize addresses from 1 to 252
and uses these addr esses to poll and send commands to th e
various local and remote
CSUs. The information is
transmitted and received
over the CSU’s ESF Data
Link. The 8 switches are set
to a binary address code in
the range of 1 to 252.
Value
128
64
32
8
MSB
7654321
16
NOTE: Each unit must
have a unique address.
Mark your address selection in the right or left box.
Then flip the switch toward
your particular selection.
8
4
2
1
Left (1)
LSB
Right (0)
Configuration Switch SW2
Mark your configu ration selecti on in either the right or le ft box.
Then flip the switch toward your particular selection.
Yellow - Transcode Yellow - Normal
Test - Clear
Zeros - 128
Keep Alive - Framed
Keep Alive - LLB
Line Code - B8ZS
DTE Mode - ESF
Network Mode - ESF
Left (1)
8
Test - QRS
7654321
Zeros - 15
Keep Alive - Unframed
Keep Alive - AIS
Line Code - AMI
DTE Mode - D4
Network Mode - D4
Right (0)
Sealing
Current
DTE
Output
DTE
Input
DTE
Interface
Ground and
Cable Strap
S
ON
E
A
L
I
N
OFF
G
1544E Rear Panel
8
1234567
I
N
O
U
T
S
W
2
T-View
Ports
CSU
Configuration
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