ADTRAN | Total Reach OCU Data Port (TROCU DP) | Job Aid | Adtran Total Reach OCU Data Port (TROCU DP) Job Aid

Adtran Total Reach OCU Data Port (TROCU DP) Job Aid
JOBAID
TOTAL REACH OCU DATA PORT (TROCU DP)
TROCU DP
CLEI: D4D4ASUC_ _
1292006
SYNC
LOOP
OPEN
CRC
QM
DISC
NO
DSU
NTWK
LBK
CUST
LBK
LBK
AP
DEPLOYMENT GUIDELINES
STATUS LEDs
●
●
LOOP OPEN ●
CRC
●
QM DISC ●
NO DSU
●
NTWK LBK ●
✷
Loop synchronized.
Loop not synchronized.
No sealing current on local loop.
Errors on 2-wire loop.
Quality Monitor Disconnect occurred.
Customer DSU/CSU not responding/installed.
OCU loopback toward network exists.
TR DDS-R in loopback toward network, or channel loopback at
CSU exists.
CUST LBK ● On
TROCU DP in loopback toward customer.
AP
● On
Unit has been remotely provisioned.
✷ Flashing Remote control link active.
Note: All LEDs OFF indicates loss of power or other malfunction.
SYNC
61292006L2-22B
0105
Green
Red
Red
On
On
On
On
Flashing
CIRCUIT BOARD DIP SWITCH SW1
O 1
N
DIP Switch SW1 options must be made prior to installing the TROCU DP circuit card.
SW1-1 Quality Monitor
ON TROCU DP monitors incoming
SW1
2-wire loop and 4-wire
ON
customer interface for errors.
D4
Excessive errors blocks data
SLC - 96 MODE I, III
SLC - 96 MODE II
transmission and sends ASC
ZERO CODE SUPPR
(9Eh) to network.
ERROR CORR
SW1-1 A/B Signaling
ON A/B signaling bits derived from
PROTECTED LBK
(For SW56 only)
backplane signals.
QUALITY MONITOR
OFF A/B signaling bits derived from
A/B SIGNALING
incoming data stream.
■
■
■
■
■
■
All loops must be non-loaded.
AML should not exceed 50 dB at 13.3 kHz, 135Ω termination.
Loop length should not exceed 50 kft.
Bridge tap tolerant to 12 kft (tests show no degradation to 18 kft).
Background noise should not exceed 34 dBrn.
Impulse noise should not exceed -40 dBm (+50 dBrn).
INSTALLATION & TURNUP
Installation assumes the TR DDS-R is installed.
1. Wire T/R pair, pins 24 and 51, to the D4 backplane.
2. Select required/desired options on SW1.
3. Select desired data rate with front panel DIP switch.
4. Insert the TROCU DP into its designated slot ensuring the edge connector seats
firmly into the backplane.
5. After insertion the TROCU DP will run a self-test and synchronization phase during
which all LEDs undergo an On/Off sequence.
6. After synchronization, which may take up to 90 seconds, the following LED
indication will show:
■
SYNC LED - Green
■
All other LEDs will be off until network occurrences cause them to turn on.
If LEDs in step 6 are as noted, proceed with loop testing per specifications.
If LEDs in step 6 are in any other configuration, refer to Troubleshooting Guide.
2
HARDWARE VERSUS SOFTWARE PROVISIONING
FRONT PANEL LBK PUSHBUTTON
Loopback pushbutton initiates loopback tests without CO or Test
Center coordination. Refer to LBK Pushbutton in Testing section.
Depressing the LBK pushbutton for five seconds will toggle
between hardware and software option settings.
LBK
When SW1 is used for option selection, those options take effect when the card is
inserted in the channel bank. Subsequent software provisioning will override hardware options and vice versa. Depressing the LBK pushbutton for five seconds will
toggle between hardware and software provisioning.
TYPICAL APPLICATION
FRONT PANEL DIP SWITCH
SC (Secondary Channel) may not be selected if circuit is SW56 or 64
kbps.
■ Only one data rate can be selected.
Note: If SW56 is selected, Error Correction must be OFF.
D4
■
T-Carrier
FRONT PANEL BANTAM JACKS
TR
OCU
DP
Customer Premises
2-Wire Loop
4-Wire Customer
Interface
TR DDS-R
T/R Pair
Logic level bantam jacks provide access to the transmit and receive
sides of the data stream for testing with a portable test set.
SPAN POWER
The TROCU DP span powers the remote unit. Voltage measurement from Tip to Ring is
-130 Vdc. Ring to GND is 0. Tip to GND is -130 Vdc or less depending on voltmeter
impedance.
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
■ For a complete Installation and Maintenance Practice: (877) 457-5007, Document #718. Please have your fax number available. ■
DSU/CSU
Pricing and Availability 800.827.0807
Tech Support 800.726.8663
Return for Repair 256.963.8722
www.adtran.com
61292006L2-22B
TROCU DP
TROUBLESHOOTING GUIDE
TESTING GUIDE
No Power at the TR DDS-R
The TROCU DP supports the following loopbacks and applications:
■
■
■
■
■
Ensure TROCU DP is supplying necessary voltage to power the TR DDS-R. Measure T/R voltage at the frame
(tip to ground = -130 Vdc or less depending on input voltmeter impedance, tip to ring = -125 to -130 Vdc, ring to
ground = 0). The Total Reach DDS system is not polarity sensitive.
Measure T/R voltage at the TR DDS-R.
If voltage is not present at the TR DDS-R, check continuity of cable pair.
If voltage is measured at the TR DDS-R, replace the unit.
The TR DDS-R does not invoke a measurable short between tip and ring, thus cable resistance measurements
must be made with a manually applied short, and the Total Reach elements removed.
Power, but No Synchronization
■
■
■
■
Check cable for load coils.
Note signal meter reading on TR DDS-R during power up and synchronization process. Refer to “Signal Loss
Indication” on TR DDS-R job aid for definitions. Loop loss may be too great for synchronization to occur.
Ensure loop length is within allowable deployment guidelines.
Relocate the TR DDS-R to splice points sequentially closer to the TROCU DP to isolate suspect cable sections.
Latching and alternating OCU and CSU loopbacks.
OCU latching bidirectional loopback from DS0 test set or remote test center.
■
Remote end initiated loopbacks from TR DDS-R.
■
Supports 2-wire loop tests from remote end when TR OCU DP is in bidirectional loopback.
■
All existing Total Reach system loopbacks release in response to 35 DDS loop down TIP bytes or by pressing the
LBK button on the TROCU DP or TR DDS-R.
Refer to loopback diagrams for all LBK pushbutton tests.
■
■
LBK and Pushbutton Tests
Successful loopback tests initiated by the LBK pushbutton will show the following LED indications:
Bidirectional Loopback (initiated from CO or test center)
4-Wire
CPE Interface
Excessive Errors On Loop
■
■
■
TR
TR
Local Loop
Test
DDS-R
OCU
Ensure background noise does not exceed 34 dBrn.
Ensure impulse noise is not greater than –40 dBm (+50 dBrn). Note: Measure noise with 50 kbit filter.
Compare resistance of individual conductors. If these are different, high-resistance or intermittent opens may be
indicated.
Set
TROCU DP NTWK LBK LED - ON
TROCU DP CUST LBK LED - ON
TR DDS-R CUST LBK LED - FLASHING
DP
OCU DP Bidirectional
Latching Loopback
TR DDS-R local loop loopback
Trouble Codes
4-Wire
The TROCU DP transmits an ASC (9Eh) trouble code toward the network under the following fault conditions:
■
2-wire DSL loss of signal.
■
Loss of synchronization.
■
Open loop.
■
The TR DDS-R transmits an ASC (9Eh) trouble code toward the network from the customer premises for similar 4wire customer interface fault conditions.
■
ASC (9Eh) is transmitted to the network during loopback conditions initiated by the TR DDS-R.
CPE Interface
TR
TR
Local Loop
DP
Test
DDS-R
OCU
Set
TROCU DP NTWK LBK LED - FLASHING
TR DDS-R NTWK LBK LED - ON
Loopback
Pushbutton
Push once for TR DDS-R
Loopback toward network.
TROCU DP local loop loopback
4-Wire
INSERTION LOSS MEASUREMENTS
CPE Interface
ASC 9Eh
TR
TR
DP
The table below is for comparison only. The Total Reach DDS system operates at 13.3 kHz for all customer data
rates. Loss should not exceed 50 dB at 13.3 kHz.
Test
DDS-R
OCU
Total Reach Design Limits at Traditional 4-wire Frequencies
Local Loop
Set
Loopback
TROCU DP CUST LBK LED - ON
TR DDS-R CUST LBK LED - FLASHING
Pushbutton
Push once for TROCU DP Loopback
toward customer for local loop testing.
Customer
Rate
4-Wire Qualifying
Frequency (kHz)
TR OCU Loss
Limit (dB)
2.4
2.4/SC
4.8
4.8/SC
9.6
9.6/SC
19.2
19.2/SC
56
56/SC & 64
1.2
1.6
2.4
3.2
4.8
6.4
9.6
12.8
28.0
36.0
21
23
26
29
33.5
37
44
50
59
61
WARRANTY
Warranty for Carrier Networks products manufactured by ADTRAN and supplied under Buyer’s order for use in the
U.S. is ten (10) years. For a complete copy of ADTRAN’s U.S. Carrier Networks Equipment Warranty statement, call
(877) 457-5007, Document #414.
TR OCU-R customer loop loopback
4-Wire
ASC 9Eh
ASC 9Eh
TR
Test
DDS-R
OCU
DP
CPE Interface
TR
Local Loop
Set
Loopback
TR DDS-R CUST LBK LED - ON
Pushbutton
Push twice for TR DDS-R
Loopback toward customer.
COMPLIANCE REQUIREMENTS
CAUTION: This product for installation in a restricted
access location in a Type B or E enclosure only.
Max input current @ max load = 100 mA @ -48 Vdc.
Code
Power Code (PC)
Telecommunication Code (TC)
Installation Code (IC)
Input
Output
F
–
A
C
X
–
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