Tainet DT-128 Series User manual

TAINET
DT-128
High-Speed Network Termination Unit
USER'S MANUAL
The Professional Partner
TAINET COMMUNICATION SYSTEM CORP.
Headquarters:
No. 25, Alley 15, Lane 120, Sec. 1.
Nei-Hu Rd,Taipei 114, Taiwan
TEL: [phone]
FAX: [phone]
http://www.tainet.net
Beijing Branch:
3F, A Building, 113 Zhi Chun Lu, HaiDian
District, Beijing, China
Zip Code: 100086
TEL: [phone]~87
FAX: [phone]
V1.8 07008-00013 2004/03/24

CONTENTS
CHAPTER 1 : THE TAINET DT-128 SERIES NTU...................................................... 2
1.1 Description .................................................................................................. 2
1.2 Technical Specifications ............................................................................. 2
1.3 Ordering Information .................................................................................. 3
CHAPTER 2 : INSTALLATION ...................................................................................... 6
2.1 Description .................................................................................................. 6
2.2 Unpacking ................................................................................................... 6
2.3 Site Requirements ....................................................................................... 6
2.4 Site Selection............................................................................................... 7
2.5 AC Electrical Outlet Connection................................................................. 7
2.6 Connecting with 2-wire/4-wire Line........................................................... 7
CHAPTER 3 : FRONT PANEL LCD AND MENU-DRIVEN..................................... 10
3.1 The Front And Rear Panels ....................................................................... 10
3.2 Operating The DT-128 .............................................................................. 11
3.3 The Menu Tree .......................................................................................... 13
3.4 Detailed Description Of The Menu Tree................................................... 15
3.4.1 Test Menu......................................................................................... 15
3.4.2 Config NTU Menu ........................................................................... 16
3.4.3 Config DTE Menu............................................................................ 17
3.4.4 Profile Menu..................................................................................... 18
3.5 Operating The DT-128N ........................................................................... 19
CHAPTER 4 : GENERAL INFORMATION AND FEATURES ................................ 21
4.1 Preview...................................................................................................... 21
4.2 2W/4W Uncondition Twisted Line ........................................................... 21
4.3 LT Mode VS. NT Mode............................................................................ 21
4.4 Synchronous VS. Asynchronous............................................................... 22
4.5 Configuration Profile Set-Up .................................................................... 22
4.5.1 Factory Profile .................................................................................. 22
4.6 Remote Configuration ............................................................................... 23
CHAPTER 5 : MAINTENANCE .................................................................................... 25
5.1 Description ................................................................................................ 25
5.2 Instruments ................................................................................................ 25
5.3 Periodic Maintenance................................................................................ 25
5.4 Troubleshooting ........................................................................................ 25
5.5 Return Procedure....................................................................................... 25
APPENDIX I : PARAMETER TABLE........................................................................... 26
APPENDIX II: DT-128 DTE INTERFACE DB-25 DIP ASSIGNMENT TABLE........... 28
APPENDIX III: G.703 64KBPS CO-DIRECTIONAL INTERFACE APPLICATION .. 29
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INFORMATION TO THE USER
NOTE: This equipment has been tested and found to comply with the limits for a Class A
digital device. Pursuant to the Part 15 of FCC rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and if not installed and used in accordance with the instructions may cause
harmful interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on. The user is encouraged to try to correct the interference by one or more
of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
Consult the dealer or an experienced radio/TV technician for help.
This booklet is available from the US government Printing Office, Washington, DC 20402,
Stock NO. 004-000-00345-4.
The shielded RS-232 cable is to be used in order to ensure compliance with FCC Part 15, and
it is the responsibility of the user to provide and use shielded RS-232 cable from NTU to
personal computer.
CAUTION: Any changes of modifications not expressly approved by the grantee of this
device could void the user's authority to operate the equipment.
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CHAPTER 1
THE TAINET DT-128 SERIES NTU
CONTENT
1.1 Description
1.2 Technical Specifications
1.3 Ordering Information
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
CHAPTER 1 : THE TAINET DT-128 Series NTU
1.1 Description
•TAINET DT-128 and DT-128N are high speed, synchronous and asynchronous, full
duplex Network Termination Unit (NTU). The DT-128 is a stand-alone type for desktop
use. However, the DT-128N is designed as a rack-mounted type allowing you to install
up to 16 NTU cards in one TRS32 shelf.
•DT-128 and DT-128N fully comply with ANSI T1.601 using 2B1Q line coding and echo
cancellation technique for full duplex operation at synchronous 2400bps to 128Kbps or
asynchronous 300bps to 38.4Kbps transmission rate over a 2/4-wire unconditioned
unloaded twisted line.
•DT-128 and DT-128N provide an operating range up to 6.0 Km over a 26-gauge wire or
up to 7.8 Km over a 24-gauge wire in 2/4-wire mode.
•DT-128 and DT-128N provide internal or external clock flexible use in different
applications option in LT mode.
•DT-128 and DT-128N also provide diagnostic capability including Analog loopback,
Digital loopback (Local and Remote), and BER TEST for troubleshooting both NTU and
the line.
•Support remote configuration function via D channel.
•Front panel configuration, monitoring via a 2x16 characters LCD and six pieces of
rubber switches.
•DT-128 and DT-128N front panel LED indicators provide indication for PWR, DTR,
DSR, RTS, CTS, TXD, DCD, RXD, ACT and TST.
•DT-128N is also associated with TAINET MANAGER for Windows NMS, a standard
feature, which commands pass forward to control unit.
1.2 Technical Specifications
•DT-128 and DT-128N NTU fully comply with ANSI T1.601.
•DTE Speed
(1) Synchronous : 128K/64K/38.4K/19.2K/9600/4800/2400 bps
(2) Asynchronous : 38.4K/19.2K/9600/4800/2400/1200/600/300 bps
•Line Requirement : 2 wire or 4 wire unconditioned unloaded twisted Line
•Operating Range
2/4-wired Mode
(1) Up to 6.0 Km over 26 gauge wire
(2) Up to 7.8 Km over 24 gauge wire
•Line Coding : 2B1Q
•Output Level : 13 or -3dBm
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
•Line Impedance : Balanced 135Ω
•Line Interface : RJ11 Connector
•Equalization : Adaptive Equalizer
•Diagnostic Capability
(1) Analog Loopback
(2) Digital Loopback (Local or Remote)
(3) Remote Configuration
(4) BERT - Bit Error Rate Test with Test Pattern and Error Count
•Timing
LT : Internal or External clock
NT : Loopback clock
•Power Requirement : 90 ~ 265 VAC auto range, 47 ~ 63 Hz
DC Source : -36 ~ -72 VDC option (for Rack)
Dual Redundant AC or DC Power Supply option (for
Rack)
Consumption : Less than 7 Watts (Stand Alone Type)
Less than 6.5 Watts (Rack Mount Type)
Less than 110 Watts (Full Shelf Equipped)
•Operating Temperature: 0 °C ~ 50 °C
Storage Temperature: -25 °C ~ 70 °C
Relative Humidity: up to 95 % (non-condensing)
•Physical Size
(1) Stand-alone Type (DT-128) - 194 W x 60 H x 316 D mm, Weight 1.5kg
(2) Rack-mounted Type (DT-128N) - 220 W x 26 H x 328 D mm, Weight 0.6kg
(3) Shelf (TRS32 RACK) - W - 19", H - 5RU, D - 380 mm, Weight 8 kg
•DTE Interface
(1) EIA RS-232D, ITU-T V.28, 25pin D type, female
(2) EIA RS-530 25pin D type, female
(3) V.35 - 34 pin, female
(4) X.21/V.11 - 15pin, female
(5) G.703 64Kbps co-directional
1.3 Ordering Information
•DT-128 High speed 128Kbps NTU (stand alone type)
•DT-128N Rack mount type DT-128
•NMC32 NMS Control unit
•TRS32 19" width rack for up to 16 DT-128N cards
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
•PW-132A 90 ~ 265 VAC 130W power unit for rack
•PW-132D -36 ~ -72 VDC 130W power unit for rack
•TAINET MANAGER Network Management System for DT-128N
for Windows
•Interface option V.35, V.24/RS-232, RS-530, X.21/V.11, G.703 64Kbps
co-directional
•CSR NMS control unit with LAN and PPP interface
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
CHAPTER 2
INSTALLATION
CONTENT
2.1 Description
2.2 Unpacking
2.3 Site Requirements
2.4 Site Selection
2.5 AC Electrical Outlet Connection
2.6 Connecting With 2-Wire/4-Wire Line
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
CHAPTER 2 : INSTALLATION
2.1 Description
This chapter provides the information needed to install the DT-128 NTU and to ensure that it
is working properly. You may obtain more information about this subject for the DT-128N
from the User's Manual of the TAINET TRS32 Shelf.
2.2 Unpacking
Save the carton and protective packing material in which your DT-128 NTU was shipped; you
might need them for repackaging if you have to store or ship the NTU in the future. The
following items are shipped with your DT-128 NTU:
• One DT-128 NTU User's Manual.
• One 7-feet (2.13m) modular telephone cable for connection to an RJ11 4-pin jack.
• One 6-pin box for twisted line application.
Rough handling during shipping causes most early NTU failure; after you unpack the NTU,
check carefully for shipping damage. Contact the shipper if you notice any damage.
Direct any additional questions about damaged or missing parts to the nearest sales
representative, or contact: #[email protected].
2.3 Site Requirements
The FCC requires telecommunications equipment to withstand electrical surges which may
result from lightning strikes; TAINET NTUs meet the requirements set forth by the FCC. The
following procedure outlines some common practices which can minimize the risk of damage
to computer equipment from electrical surges.
1) Make sure the electrical service in your building is properly grounded as described in
article 250 of the National Electrical Code (NEC) handbook.
2) Verify that a good copper wire of the appropriate gauge, as described in Tables 250-94/95
of the NEC Handbook, is permanently connected between the electrical service panel in
the building and a proper grounding device such as:
)A ground rod buried outside the building at least 8 feet (2.44 meters) deep in the earth.
)Several ground rods, connected together, buried outside the building at least 8 feet
(2.44 meters) deep in the earth.
)A wire (see tables 250-94/95 of the NEC handbook for gauge) that surrounds the
outside of the building and is buried at least 2.5 feet (.76 meters) deep in the earth.
Note: The three grounding devices described above should be firmly placed in the
earth. Soil conditions should not be dry where the device is buried.
)A metal water-supply pipe connected to the water main in the street or a metal cased
well. The water pipe used must not have plastic piping between the ground connection
and the water main (or the well). The connection should be made where the pipe
enters the building. The water meter must be shunted by a copper strap.
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
3) If you are unsure whether the electrical service in your building is properly grounded, have
it examined by your municipal electrical inspector.
4) Install a surge protector between the NTU and AC power outlet. Any additional computer
equipment you have connected to the NTU (directly or through another device), such as a
terminal or printer, should also be plugged into the same surge protector. Make sure that
the surge protector is properly rated for the devices you have connected to it.
2.4 Site Selection
Locate the DT-128 NTU no farther than 50 feet (15.24 meters) from your data terminal
equipment (DTE) and within 6 feet (1.83 meters) of a grounded AC outlet furnishing the
required power.
Install the modem in a clean area that is free from environmental extremes. Allow at least 6
inch (15.24 cm) in front of the modem for access to the front panel, and at least 4 inch (10.2
cm) in back for cable clearance. Position the modem so you can easily see the front panel. Do
not stack the DT-128 on top of another NTU.
• CAUTION: To avoid overheating the DT-128, do not place anything within 1 inch (2.54
cm) of either side of the NTU, and do not place the NTU on its side.
2.5 AC Electrical Outlet Connection
Check the label on the bottom of the modem for the unit's power requirements. Once you are
certain the power requirements specified on the label match those of your electrical outlet,
plug the DT-128 NTU into the outlet.
Once the DT-128 NTU is installed as described in the previous sections, you may turn the
power on. The NTU performs a self-test before DT-128 NTU greeting message appears on the
liquid crystal display (LCD) on the NTU front panel.
2.6 Connecting with 2-wire/4-wire Line
To connect your NTU to a permissive RJ11 voice jack in 2/4 wire-line, follow this procedure:
1) Connect the 4-pin modular to 4-pin modular cable provided to connect your NTU to the
line set via an RJ11 jack.
2) For the older version (H/W: V3.x, S/W: V2.x), change 2W/4W dip switch from (1,2) pins
ON and (3,4) pins OFF to (3,4) pins ON and (1,2) pins OFF in the rear panel.
3) The newest version (H/W:V4.3, S/W:V3.0) of DT-128 was improved allowing 2W/4W
selection through LCD menu-driven under CONFIG NTU MENU.
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
The pin layout of the connector for RJ11 operation is as follows:
(RJ11)
ON
OFF DTE
Pin No. Color 2-Wire 4-Wire
1N/A
2 Black RX
3RedTX/RXTX
4 Green TX/RX TX
5 Yellow RX
6N/A
Line
Fig 2-1 : 2-wire/4-wire Line Connection
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
CHAPTER 3
FRONT PANEL LCD AND MENU-DRIVEN
CONTENT
3.1 The Front And Rear Panels
3.2 Operating The DT-128
3.3 The Menu Tree
3.4 Detailed Description of The Menu Tree
3.5 Operating The DT-128N
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
CHAPTER 3 : FRONT PANEL LCD AND MENU-DRIVEN
3.1 The Front And Rear Panels
The front panel of TAINET DT-128 modem contains five touch switches (HOME Key, Right
Key, Left Key, ENTER Key and EXIT Key) for direct operation,
one 2 x 16 characters LCD displays and ten LED indicator lights providing a visual check of
the modem's status, as illustrated blew.
Figure 3-1 TAINET DT-128 front panel
The rear panel of TAINET DT-128 NTU contains an IEC 320 AC Power Inlet Connector, a
Power On/Off switch, a RS-232 connector (connected to DTE Equipment), and one RJ11
telephone jack (connected to 2-wire or 4-wire twisted line), as illustrated below. For more
detailed description, please refer to Chapter 2 "Installation" of this manual. In some
applications may you need DTE interface, such as RS-232, EIA-530, X.21, V.35, and G.703
64Kbps co-directional interfaces. All of them are designed in our platform, and user can
choose one of them by order (which location refers to Figure 3-3.).
Figure 3-2 TAINET DT-128 rear panel
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
Power
Module
Front Panel
U9 U11
MC145572
FB5
321
J15
321
J8
V4.4
G.703
Module
JP1
Short:128K
Open: 64K
J10J9
Figure 3-3 TAINET DT-128 Jumpers Location
3.2 Operating The DT-128
1. Keypads : It consists of 5 touch switches.
HOME It is used as the, Restart function for U-interface linking up, or "HOME" key
for set-up menu to go back to the home menu.
Left key ; It is used to shift to left field.
Right key; It is used to shift to right field.
ENTER Enter key; It is used to enter the next lower level menu or confirm selections.
EXIT Exit key; use it to go back to the upper level menu.
2. LED Indicator : 10 LED bar
PWR -- On for power supply ok.
DTR -- On for DTR signal present.
DSR -- On for DSR signal present.
RTS -- On for RTS signal present.
CTS -- On for CTS signal present.
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
TXD -- On for "0", off for "1" TXD signal present.
DCD -- On for DCD signal present.
RXD -- On for "0", off for "1", RXD signal present.
ACT -- On for NTU activated.
TST -- On for test mode active.
3. LCD Display :
The DT-128 has a 2 by 16 characters LCD with auto back-light control. Some different
pictures of the LCD display are shown below.
A. Top Menu
Example: LT SYNC
128K CONNECT
Description:
1) Mode: LT Mode, NT Mode.
2) Status: Handshake, Activate, Connect.
3) Data Format: SYNC, ASYNC.
4) Speed: DTE speed=DCE speed=128Kbps
B. Menu Select
Example 1 : Example 2 :
L MENU SELECT
STATUS
L MENU SELECT
TEST
Description:
1) In top menu, press "ENTER" key to enter this menu.
2) Select "LOCAL" or "REMOTE" first if connected.
3) The character "L" on the upper left corner stands for local.
4) You may use " " and "
" keys to select menu.
5) Press "ENTER " key to enter the "MENU".
6) Press "EXIT" key to quit from this menu.
7) Note that status menu is not available before connection.
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
C. Menu Screen
Example 1 : Example 2 :
L STATUS
retries = xxx
R CONFIG NTU
LT/NT Mode
Example 3 : Example 4 :
L TEST
AL
L CONFIG DTE
Data Rate / Format
Description :
1) L-Local, R-Remote.
2) Menu name: STATUS, TEST, .......
3) Status : retries
4) Use " " or "
" keys to shift among field; press "ENTER" key to enter the
selected menu.
D. Set-up Menu
Example 1 : Example 2 :
LT/NT mode
LT-Internal ←
Data Rate / Form
SYNC ←
Description:
1) Use " " or "
" keys to shift among field, then press "ENTER" key to
confirm and wait for ←appears on the LCD screen.
2) Press "EXIT" key to quit from this menu.
3.3 The Menu Tree
Main Menu
Version Top Local
Remote
(If connected)
STATUS
TEST
CONFIG NTU
CONFIG DTE
PROFILE
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
A. STATUS MENU
STATUS : ➨Retries = 0....16383
B. TEST MENU
➨Clear All Has Been Done
➨AL Off\On
➨DL Off\On
➨RDL Off\On
➨Test Pattern Off\On
TEST : ➨RDL Grant Off\On
➨Error Count 0.....16383
C. CONFIG NTU MENU
CONFIG : ➨LT/NT Mode LT-internal /LT-external
NTU /NT-Loopback
➨Line Type 2W/4W/4W Atten. 16dB
D. CONFIG DTE MENU
➨Data Rate/Format Sync-128K /Sync-64K /Sync-38.4K
/Sync-19.2K /Sync-9.6K /Sync-4.8K
/Sync-2.4K /Async-38.4K
/Async-19.2K /Async-9.6K
/Async-4.8K /Async-2.4K
/Async-1.2K /Async-0.6K
/Async-0.3K
CONFIG : ➨DSR Control Normal\Force on
DTE ➨CTS Control Normal\Force on
➨DCD Control Normal\Force on
E. PROFILE MENU
PROFILE : ➨Load Factory Profiles
\0:LT-SYNC-128K
\1:NT-SYNC-128K
\2:LT-SYNC-64K
\3:NT-SYNC-64K
\4:LT-ASYNC-38.4K
\5:NT-ASYNC-38.4K
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
3.4 Detailed Description Of The Menu Tree
3.4.1 Test Menu
ITEM NAME DESCRIPTION
CLEAR ALL Clear all the tests in one time, and a prompt "Has been
done" shall be shown.
AL
➧ON
➧OFF
Local analog loop test (ON/OFF). This test is normally
used to certify if the NTU is in normal operation
condition.
RDL
➧ON
➧OFF
For remote digital loop test (ON/OFF). This test can
control remote NTU to perform digital loop for finding
out if the NTU and line of both ends are in normal
condition.
RDL Grant
➧ON
➧OFF
Set for accepting remote digital loop (RDL) test.
/Enable
/Disable
DL
➧ON
➧OFF
For digital loop test (ON/OFF). This test enable the
received digital data de-framed and send back to match
with the far end test.
TP TYPE Test patterns selection (CCITT V.52 Rec.)
➧ON /"511" pattern.
➧OFF /Turn off this function.
ERROR COUNT Bit error count display function.
➧0....16383 /Press Left or Right shift key to insert error.
/Press “ENTER” key to clear error count
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CHAPTER 4 : GENERAL INFORMATION AND FEATURES
3.4.2 Config NTU Menu
ITEM NAME DESCRIPTION
LT/NT MODE Select LT(Line Termination) or NT(Network
Termination) Mode.
➧LT-internal /Select LT mode for activating request by sending 10k
Hz tone & internal clock source.
➧LT-external /Select LT mode for activating request by sending 10k
Hz tone & external clock source.
➧NT-loopback /Select NT mode for waiting 10kHz tone & loopback
clock source.
Line Type Select Line Requirement
➧2W /2-Wire leased line (TX power:13dBm)
➧4W /4-Wire leased line (TX power:13dBm)
➧4W Atten. 16dB /4-Wire leased line with 16dB attenuation (TX
power:-3dBm) for back to back short distance
connection
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