ADTRAN 1200068L1 HS Series User manual

OCU DP OPTION MODULE
Part Number 1200068L1
Part Number 1200068L1#HS
OCU DP PLUG-ON BOARD
Part Number 1200083L1
USER MANUAL
61200.068L1-1C
November 1996

©1996 ADTRAN, Inc.
All Rights Reserved.
Printed in USA.
901 Explorer Boulevard
Huntsville AL 35806-2807
Phone: [phone]

OCU DP MODULE MODULE
OCUDPOPTIONMODULE
TABLE OF CONTENTS
1. Introduction ........................................................................................................ 1
1.1 OCU DP Overview .......................................................................................... 1
1.2 Functional Description.................................................................................... 1
Features ............................................................................................................. 1
OCU DP Option Module Specifications....................................................... 2
1.3 Physical Description ........................................................................................ 4
Figure 1. OCU DP Option Module .............................................................. 4
2. Installation .......................................................................................................... 5
2.1 Unpack & Inspect ............................................................................................ 5
2.2 Installing The Option Module ....................................................................... 5
Figure 2. Installing Option Module ............................................................. 6
2.3 WarrantyAnd Customer Service ................................................................... 7
2.4 Wiring ............................................................................................................. 8
Table A. Eight-Position Modular Jack Interface. ........................................ 8
2.5 Power-Up Testing and Initialization ............................................................. 9
3. Operation ............................................................................................................ 10
3.1 Overview............................................................................................................ 10
3.2 Front Panel........................................................................................................ 10
Indicators/Buttons .......................................................................................... 10
3.3 Menu Structure ................................................................................................ 10
Figure 3. TSU 100 Main Menu ...................................................................... 10
OCU DP Menus Are All Submenus ..................................................................... 11
2)PORTS Status, Submenu of 1)Status ................................................................. 11
7)PORT CONFIG, Submenu of 2)CONFIG......................................................... 12
3)FACTORY RESTORE, Submenu of 3)UTIL ..................................................... 14
7)PORT UTILITY, Submenu of 3)UTIL ................................................................ 14
2)RUN SELF TEST, Submenu of 4)TEST ............................................................. 15
3)PORT Test, Submenu of 4)TEST ........................................................................ 15
Figure 4. Diagram of Loopbacks .................................................................. 16
Appendix I OCU DP Failure Messages............................................................... 18
Failure Messages At Power-Up ............................................................................ 18
OCU DP Alarm Messages ..................................................................................... 18
November 1996 61200.068L1-1C i

ii 61200.068L1-1C November 1996

November 1996 61200.068L1-1C 1
OCU DP MODULE MODULE
1. INTRODUCTION
1.1 OCU DP OVERVIEW The Office Channel Unit Dataport (OCU DP) is
one of the Option Modules available for use with the
ADTRAN TSU 100. The OCU DP is an all-rate Office
Channel Unit Dataport. It provides signal conversion
from any of the rates on the customer loop side to a
single DS0 time slot. The OCU DP should be selected
for use with the connection of DDS or Switched 56
DSU/CSUs or other equipment which utilizes a DDS
interface. The OCU DP provides an interface between
the T1 Multiplexer and a DSU/CSU over a 4-wire
loop, up to 18,000 feet in length of 26 AWG cable. This
interface permits the combination of DDS lines into a
single T1 stream.
1.2 FUNCTIONAL
DESCRIPTION The OCU DP is designed to fit in the option slot of
the TSU 100 and is subject to its operation and control.
The OCU DP is configured from the front panel of the
TSU 100 or by an external personal computer (PC)
program. The internal menus for its configuration are
a part of the OCU DP module and are automatically
installed when the OCU DP is plugged into the unit.
FEATURES • Operates using one DS0
• 2.4, 4.8, 9.6, 19.2, 38.4, 56, 64 kbps dedicated rates
• Supports Switched 56 dial-up digital service
• Compatible with DDS secondary channel services
at rates ranging from 75 to 2400 bps, depending on
the primary channel rate
• 45dB range at all rates
• Transmit attenuation available for short loops
• OCU loopback toward TSU Network Interface (NI)
(front panel, remote, inband)
• Sealing current reversal to initiate loopback at the
CSU (front panel, remote, inband)

2 61200.068L1-1C November 1996
• PRT/LCL bidirectional loopback toward the TSU
Network Interface (NI) and the DSU/CSU
• Zero code suppression
• Quality monitor/auto line disconnect
• Latching Loopback enable/disable
• Selectable hardware/software algorithms for
Switched-56 operation
• Interface Connector-RJ48C
The 19.6 kbps feature is patented by INC, patent
#4,862,480. The 45 dB range feature is patented by
ADTRAN, patent #4,759,035. The quality monitor/
auto line disconnect feature is patented by ADTRAN,
patent #5,450,441.
OCU DP OPTION
MODULE SPECIFICATIONS Loop Interface 4-wire (TX Pair and RX Pair)
Data Rate 2.4, 4.8, 9.6, 19.2, 38.4, 56 kbps
includingsecondarychannelrates
and 64 kbps (clear channel)
Signal Format Bipolar, return-to-zero, 50% duty
cycle
TX Output ±1.5V peak ±10% for rates 2.4, 4.8,
Amplitude 19.2, 38.4, 54 and 64 kbps
±0.75V peak ±10% for 9.6 kbps
TX/RX Source
Impedance 135 Ω±20%
Dynamic Range 0 to 45 dB loops loss for all rates
measured at a frequency of half
the data rate
Sealing Current 4 to 20 mA DC with polarity re-
versal capability

November 1996 61200.068L1-1C 3
OCU DP MODULE MODULE
Capacity One DS0 (user configurable)
Tests Power-on circuit test
CSU loopback initiation - (sealing
current reversal)
OCU loopback (loopback-
internal toward MUX) PRT/
LCL (bidirectional loopback)
Connector RJ48C

4 61200.068L1-1C November 1996
1.3 PHYSICAL
DESCRIPTION The OCU DP, see Figure 1, is an option module
which plugs into the option slot in the rear of the TSU
100.
OCU DP
Port X.1
NX56/64
PORT X.2
V.35
DDS.
Figure 1. OCU DP Option Module
The OCU DP rear panel includes a plastic plug
over a cutout for additional connectors. This allows
a "plug-on" card to be added to the OCU DP module.
The PORT X.1 indication is linked to the port number-
ing philosophy of the TSU 100 product family. The X
represents the slot number, and the .1 indicates the
port number. For the TSU 100 application, there is
only one option slot. Therefore the port designation
for the OCU DP port will be 1.1. If added, the plug on
card port designation would be 1.2. These port num-
bers will appear in the front panel LCD menu dis-
plays.

November 1996 61200.068L1-1C 5
OCU DP MODULE MODULE
2. INSTALLATION
2.1 UNPACK & INSPECT Carefully inspect the OCU DP module for any
shipping damages. If damage is suspected, file a
claim immediately with the carrier and then contact
ADTRAN customer service. If possible, keep the
original shipping container for use in shipping the
OCU DP Module back for repair or for verification of
damage during shipment.
ADTRAN SHIPMENTS
INCLUDE
• The OCU DP Option Module
• The OCU DP Option Module User's Manual
(To be inserted into main TSU 100 User's Manual)
CUSTOMER PROVIDES
• Cable for connection to DSU/CSU
2.2 INSTALLING THE
OPTION MODULE
CAUTION
Power to the TSU 100 should be OFF when install-
ing the OCU DP Module, PN 1200.068L1.
The OCU DP Option Module PN1200.068L1#HS, is hot
replaceable and can be installed in the TSU 100 with the
power On.
PLACEMENT OF THE OM
Figure 2 is representative of the action required
for proper placement of the Option Module.
• Remove the cover plate from the TSU 100 rear
panel.
• Slide the option module into the rear panel until it
is positioned firmly against the front of the TSU 100.
• Fasten the thumb-screws at both edges of the option
module.

6 61200.068L1-1C November 1996
POWER CONNECTION
Each OCU DP module derives power from the
base TSU 100 unit. Power to the TSU 100 is supplied
by a captive eight foot power cord.
TSU 100
Option Module
Cover Plate
Figure 2. Installing Option Module

November 1996 61200.068L1-1C 7
OCU DP MODULE MODULE
2.3 WARRANTY AND
CUSTOMER SERVICE ADTRANwillreplace orrepairthisproduct within
five years from the date of shipment if it does not meet
its published specifications or fails while in service.
For detailed warranty, repair and return information
refer to the ADTRAN Equipment Warranty, Repair
and Return Policy Procedure in the TSU 100 User's
Manual.
Return Material Authorization (RMA) is required
prior to returning equipment to ADTRAN.
For Service, RMA requests or more information,
see the last page of this manual.

8 61200.068L1-1C November 1996
PINOUT CONNECTORS
FOR EIGHT-POSITION MODULAR JACK INTERFACE
PIN NAME DESCRIPTION
1 TIPRX RECEIVE DATA FROM THE DSU
2 RING RX RECEIVE DATA FROM THE DSU
3, 4, 5, 6 UNUSED
7 TIPTX SEND DATA TOWARDS THE DSU
8 RINGTX SEND DATA TOWARDS THE DSU
2.4 WIRING The OCU DP offers one connector for a DDS
interface.
Connector Type (USOC)= RJ48C
PN= AMP # 555164-1
Table A. Eight-Position Modular Jack Interface

November 1996 61200.068L1-1C 9
OCU DP MODULE MODULE
2.5 POWER-UP TESTING
AND INITIALIZATION The OCU DP option module executes a self test
during the power-up sequence, as described in the
TSU 100 User's Manual. No initialization input is
required. Automatically, upon power-up, any previ-
ously configured setting for the OCU DP is restored.
When the self testing is complete and the configu-
ration is successfully restored, it will be indicated by
the illumination of the green "OK" LED in the MOD-
ULE group on the front panel. (See the section Front
Panel Operation in the TSU 100 User's Manual.) If the
OCU DP module fails one or more of the self tests, a
messageisdisplayedonthefrontpanelduringpower-
up. (See the section Power Up Testing and Initialization
in the TSU 100 Manual) Specific failures of the OCU
DP module are shown in the appendix OCU DP
Failure Messages. If any alarms are detected during
operation, it will be indicated by the illumination of
the red "ALARM" LED in the MODULE group on the
front panel.

10 61200.068L1-1C November 1996
3. OPERATION
3.1 OVERVIEW The OCU DP module is controlled as part of the
TSU 100 using the same methods as described in the
user's manual.
3.2 FRONT PANEL
INDICATORS/BUTTONS
Please refer to the description of the TSU 100 front
panel indicators and buttons in the user's manual.
3.3 MENU STRUCTURE The OCU DP menus appear as a subset of and
operate the same as menus for the TSU 100. The
menus are accessed by selecting 1.1 OCU DP under
the PORT menu items.
Figure 3 shows the TSU 100 Main Menu with the
PORT selections shaded.
The TSU 100 User's Manual's appendix TSU 100
Menu Tree is a complete menu diagram.
MAIN MENU
1)STATUS
2)CONFIG
3)UTIL
1)NI PERF REPORTS
2)PORTS STATUS
3)ACTIVE ALARMS
4)VIEW HISTORY
1)ENTER PASSCODE
2)TIME/DATE
3)FACT RESTORE
4)REINIT UNIT
5)UNIT ID
6)SOFTWARE REV
7)PORT UTILITY
1)NETWORK TESTS
2)RUN SELFTEST
3)PORT TEST
4)TEST
1)NETWORK (NI)
2)UNIT
3)MAP XCHNG
4)MAP IN USE
5)DS0 MAP A
6)DS0 MAP B
7)PORT CONFIG
Figure 3. TSU 100 Main Menu

November 1996 61200.068L1-1C 11
OCU DP MODULE MODULE
OCU DP MENUS
ARE ALL SUBMENUS The OCU DP menus are accessed from and oper-
ated the same as menus for the TSU 100. As can be
noticed from the shaded menu items in Figure 3, the
OCU DP items are submenu choices of the four main
menus.
Each of the OCU DP sub menu items is discussed
in the following paragraphs. All are accessed by the
same method.
Operation
With the cursor on one of the four main menu choices
Press: ENTER or the number key
Results: display of the first two submenu items with
the cursor on the first item.
Use: the down scroll key to place the cursor on
the desired item
Press: ENTER
Results: display of the first two submenu choices.
2)PORTS STATUS,
SUBMENU OF 1)STATUS This menu item is used to display active status
information about the OCU DP. There are three fields
that report information. The display of an asterisk (*)
indicates an item is active.
Open - An asterisk will be present if the DDS loop
is open or wired incorrectly.
IDLE - An asterisk will be present if the OCU is
detecting Control Mode Idle (CMI) from
the DDS loop.
ADIS - An asterisk will be present if the Quality
Monitor Autodisconnect feature is en-
abled and the OCU has received enough
improperviolationstodisconnect the DDS
loop.
*
OPEN IDLE ADIS

12 61200.068L1-1C November 1996
7)PORT CONFIG,
SUBMENU OF 2)CONFIG The 7)PORT CONFIG menu item is used for con-
figuration of the OCU DP Passthru Option Module.
Operation
With the cursor on main menu item 2)CONFIG
Press: ENTER or the number 2 key
Results: display of the first two Configuration sub-
menuitemswiththe cursor on 1)NETWORK
(NI)
Use: the down scroll key to place the cursor on
7)PORT CONFIG
Press: ENTER
Results: only the bottom line of the LCD changes
display
Use: the scroll keys to identify 1.1 OCU DP
To select
Press: ENTER
Results: the first of eight submenu items
Continue with standard operating procedures.
RATE - Sets the data rate of the OCU DP.
Choices - 2.4, 4.8, 9.6, 19.2, 38.4, 56.0 DDS,
56.0 SW, 64
SEC CHAN - Enables or disables the use of a
secondary channel with all data rates excluding
64 kbps.
Choices - OFF or ON
QUALMON - Qualitymonitorfunction/AutoDis-
able Function. Allows the OCU DP to monitor the
data it receives from the DDS loop. If it detects
violations in 7 out of 20 consecutive seconds, it
ignores the data it receives and sends abnormal
stationcodetowardtheNI. Normaloperationwill
automatically be restored upon receipt of 30 con-
secutive error free seconds.
7)PORT CONFIG
PORT:1.1 OCU DP

November 1996 61200.068L1-1C 13
OCU DP MODULE MODULE
Choices - OFF or ON
ZCS - Zero Code Suppression may be used to
prevent a channel of zeros when running 56K
data rate with secondary channel ON. ZCS is not
used for 64 kbps data rate.
Choices - OFF or ON
A/B SIGNL - Selects either a software or hard-
ware algorithm to be used for SW56 operation.
The OCU DP decodes signalling from the
network and passes this to the loop as either CMI
code or data mode. The default method of decod-
ing signalling from the network is a software
technique. If the C bit (bit 8) is 0 in any of the last
seven data bytes, signalling is decoded as a 0 (on-
hook). If bit 8 is a 1 in all of the last seven data
bytes, signalling is decoded as a 1 (off-hook).
If the hardware (HW) option is enabled, sig-
nalling is decoded from the A and B bits in frames
6 and 12 of the T1 data.
Choices - SW or HW
LTCHING LBACK - Enables the OCU DP response
to the latching OCU and Channel loopback com-
mands and performance of the requested test
configuration.
Choices - ENABLED or DISABLED
TX LEVEL - Sets the Transmit Signal out of the OCU
DP to either Normal or Attenuated. For short line
lengths it may be necessary to attenuate the trans-
mit signal if the signal is large enough to saturate
the DSU/CSU equipment being used.
Choices - NORMAL or REDUCED 10dB

14 61200.068L1-1C November 1996
3)FACT RESTORE,
SUBMENU OF 3)UTIL This menu item is used to restore the factory
default setting for all OCU DP option module param-
eters.
Operation Follow standard operating procedure to access
the 3)UTIL menu items.
With the cursor on 3)FACT RESTORE
Press: the ENTER key
Results: the unit returns to the opening main menu
with all factory preset defaults are restored.
7)PORT UTILITY,
SUBMENU OF 3)UTIL The 7)PORT UTILITY menu item is primarily
used to access the display of the current software
information for each port installed in the unit. This
information is required when requesting assistance
from ADTRAN customer service or when updates are
needed.
Operation
Follow standard operating procedure to access
the 3)UTIL menu items.
With the cursor on 7)PORT UTILITY
Press: the ENTER key
Results: display of the first available port.
Use: the up and down scroll keys to identify 1.1
OCU DP
To select
Press: ENTER
Results: display of the option card name and the
softwareversioninstalled.
Press: the CANCEL key to exit or to select another
port.
OCU DP REVA
7)PORT UTILITY
PORT:1.1 OCU DP

November 1996 61200.068L1-1C 15
OCU DP MODULE MODULE
2)RUN SELF TEST,
SUBMENU OF 4)TEST This menu item is used to execute both the TSU
100's internal test and the OCU DP's internal test.
This is the same test as is executed upon power-up.
The results of the self test are displayed on the LCD.
For additional information on Self test, consult the
chapter Operation in the TSU 100 User's Manual.
Follow standard operating procedure to access
the 4)TEST menu items.
With the cursor on 2)RUN SELFTEST
Press: the ENTER key
Results: a changing display in the LCD showing the
test result.
3)PORT TEST,
SUBMENU OF 4)TEST This menu item is used to activate tests of the
selected data ports. Selecting the OCU DP displays
two Loopback tests available for this option module.
Operation
Follow standard operating procedure to access
the 4)TEST menu items.
With the cursor on 3)PORT TEST
Press: the ENTER key
Results: display of the first available port.
Use: the up and down scroll keys to select 1.1
OCU DP
To select
Press: ENTER
LOOPBACK - This item activates the loopback
function on the OCU DP module.
On the OCU DP, the CSU loopback initiates a
sealing current reversal. Upon detecting this rever-
3 )PORT TEST
PORT:1.1 OCU DP

16 61200.068L1-1C November 1996
sal, the DDS CSU (connected tothe OCU DP over a 4-
wire loop) should loop data back toward the NI.
The OCU loopback loops the data mapped to the
OCU DP back toward the network interface of the
controller. Using the loopback in conjunction with an
externalBERTdriving theNetworkInterface,will exer-
cise the entire data path from the Network Interface
(NI) through the OCU DP option module and back out
the NI. See Figure 4, Diagram of Loopbacks.
Figure 4. Diagram of Loopbacks
The PRT/LCL bidirectional loopback loops the
data mapped to the OCU DP back to the network
interface of the controller. It also loops data from the
DSU/CSU back to the DSU/CSU. If the DSU/CSU is
capableofsending atestpattern, itcanbeused withthis
loopback to verify integrity of the 4-wire DDS loop.
To deactivate the Loopback, OFF must be selected
under the 1.1 OCU DP submenu.
TSU 100
Network Interface
(NI)
(Controller)
T1
OCU DP
4-wire DDS
OCU
PRT/LCL
DSU/CSU
CSU