PairGain HiGain ETSI UTU-814 User manual

PAIRGAIN GLOBAL ACCESS
HIGAIN ETSI
UNIVERSAL TERMINATION UNIT
QUICK INSTALLATION GUIDE
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES
SECTION 700-814-112-01
Model List Number Part Number
UTU-814 1B 150-1420-54B

700-814-112-01, Revision 01
ii November 24, 1999 UTU-814 List 1B
Revision History of This Guide
© Copyright 1999 PairGain Technologies, Inc.
PairGain and HiGain are registered trademarks and HiGain ETSI is a trademark of
PairGain Technologies, Inc. All other product names mentioned in this practice are used
for identification purposes only and may be trademarks or registered trademarks of their
respective companies.
Information containedin thisdocumentis company private to PairGainTechnologies, Inc.,
and shall not be modified, used, copied, reproduced or disclosed in whole or in part without
the written consent of PairGain.
Information furnished by PairGain Technologies is believed to be accurate and reliable.
However, no responsibility is assumed by PairGain Technologies for its use, nor for any
infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of PairGain
Technologies. PairGain Technologies reserves the right to change specifications at any
time without notice.
Revision Release Date Revisions Made
01 November 24, 1999 Initial release

700-814-112-01, Revision 01 Using This Guide
UTU-814 List 1B November 24, 1999 iii
USING THIS GUIDE
Three types of messages, identified by icons, appear in the text.
DOCUMENTATION
The complete technical practice for the HiGain ETSI Universal Termination
Unit,UTU-814List 1B,section700-701-100-xx,can be downloadedfromthe
Customer Site portion of the PairGain Web page at www.pairgain.com. A
password is required. If you do not have a password, contact your PairGain
sales representative.
If you have comments on this PairGain document, send an email to
[e-mail]. Type the product name and the
section number of the document in the subject area of the email message.
Notes contain information about special circumstances.
Cautions indicate the possibility of equipment damage or the
possibility of personal injury.
The ESD Susceptibility symbol indicates that a device or
assembly is susceptible to damage from electrostatic
discharge.

700-814-112-01, Revision 01
iv November 24, 1999 UTU-814 List 1B

700-814-112-01, Revision 01 Table of Contents
UTU-814 List 1B November 24, 1999 v
TABLE OF CONTENTS
Overview _______________________________________________ 1
Features.................................................................................... 1
Transmission Ranges ............................................................... 2
Compatibility ........................................................................... 2
Front Panel _____________________________________________ 3
Inspection ______________________________________________ 6
Safety _________________________________________________ 6
Installation _____________________________________________ 7
System Configuration ____________________________________ 9
Maintenance Terminal Connection.......................................... 9
Logging On............................................................................ 10
Navigating Menus.................................................................. 11
Console Screen Menu Structure............................................. 12
System Settings...................................................................... 13
LTU and NTU Interface Settings...........................................15
Viewing Status _________________________________________ 18
Main Console Screen............................................................. 18
Monitor Screens..................................................................... 20
PairGain Regional Sales Offices __________________________ 23
Product Support _______________________________________ 24
Technical Support.................................................................. 24
World Wide Web................................................................... 24
Returns................................................................................... 25
Certification and Warranty__________________Inside Back Cover

List of Figures 700-814-112-01, Revision 01
vi November 24, 1999 UTU-814 List 1B
LIST OF FIGURES
Figure 1. UTU-814 List 1B Front Panel.................................................3
Figure 2. UTU-814 Console Port and Maintenance Terminal
Connector Pinouts.................................................................10
Figure 3. Console Screen Menu Structure............................................12
LIST OF TABLES
Table 1. UTU-814 List 1B Front Panel Components.............................4
Table 2. Front Panel LED Indications....................................................5
Table 3. Console Screen Navigation Keys ...........................................11
Table 4. Settings in Config System Settings Menu..............................13
Table 5. Settings in Config LTU and Config NTU
Interface Menus......................................................................15
Table 6. Information Displayed in Main Console Screen ....................18
Table 7. Information in Monitor LTU and NTU
Interface Screens ....................................................................20
Table 8. Information Displayed in Monitor HDSL
Span 1 Screen.........................................................................22
Table 9. PairGain Regional Sales Offices ............................................23

700-814-112-01, Revision 01 Overview
UTU-814 List 1B November 24, 1999 1
OVERVIEW
The PairGain® HiGain ETSI™Universal Termination Unit UTU-814 List 1B
is a programmable High-bit-rate Digital Subscriber Line (HDSL) unit that
can be configured as an LTU (master) or an NTU (slave). These LTUs and
NTUs are the Exchange Office and Customer sides, respectively, of a
repeaterless, DSX-1 (T1) and Nx64k (serial interface) transmission system.
The LTU-configured UTU-814 accepts the respective payloads through
DSX-1 and Nx64k ports and transports data to the NTU-configured unit at
rates of up to 1.544 Mbps (the standard T1 rate). The 1.544 Mbps payload is
allocated to the DSX-1 and Nx64k ports in time-slot increments of 64 kbps
each.
The DSX-1 interface conforms with ANSI T1.403-1989 and AT&T CB 119
standards. The Nx64k serial data interface complies with the V.35, V.36,
X.21, or RS-530 (RS-449) standard based on the selection made from the
console screen menus.
The NTU-configured UTU-814 can be locally powered by -36 to -72 Vdc or
line powered by a conventional LTU using less than 120 Vdc and 50 mA on
each HDSL loop. The LTU-configured UTU-814 is locally powered by -36
to -72 Vdc. The UTU-814 does not supply power to other HDSL units.
Supported application modes include Unstructured, Structured, Time Slot
Prioritization (TSP), and Single (single pair).
Point-to-multipoint, doubler, and protection switching applications are not
supported.
FEATURES
The UTU-814 List 1B has the following features:
•Application as both DSX-1 and Nx64k HDSL systems.
•Framing insertion for transmission of unframed data into T1 networks.
•Detection of standard CSU loop-up/loop-down codes.

Overview 700-814-112-01, Revision 01
2 November 24, 1999 UTU-814 List 1B
TRANSMISSION RANGES
The UTU-814 List 1B has a transmission range of up to 3.66 km
(12,000 ft.) when using 0.51 mm (24 AWG) wire and 2.74 km (9,000 ft.)
when using 0.4 mm (26 AWG) wire, including bridged taps.
COMPATIBILITY
The UTU-814 List 1B is compatible with the following PairGain HiGain
ETSI shelves and enclosures.
•EMS-830 Exchange Office Management Shelf, rear connector access
(part number 150-1400-01).
•EMS-831 Exchange Office Management Shelf, front connector access
(part number 150-1401-01).
•EMS-832 Exchange Office Management Shelf, front connector access
(part number 150-1402-01).
•ERE-810 Single-Slot Remote Enclosure (part number 150-1410-01).
•ERE-811 Single-Slot Remote Enclosure with internal AC power supply
(part number 150-1411-0x).
•ERE-821 Dual-Slot Remote Enclosure with internal AC power supply
(part number 150-1416-01).
•ERE-826 Single-Slot Remote Enclosure (part number 150-1412-01).

700-814-112-01, Revision 01 Front Panel
UTU-814 List 1B November 24, 1999 3
FRONT PANEL
The components on the UTU-814 List 1B front panel are shown in Figure 1.
Their functions are described in Table 1 on page 4 and Table 2 page 5.
Figure 1. UTU-814 List 1B Front Panel

Front Panel 700-814-112-01, Revision 01
4 November 24, 1999 UTU-814 List 1B
Table 1. UTU-814 List 1B Front Panel Components
Item Function
HDSL Loop 1 SYNC LED Displays synchronization state for HDSL Loop 1.
HDSL Loop 2 SYNC LED Displays synchronization state for HDSL Loop 2.
HDSL Loop 1 ALM LED Displays alarm state for HDSL Loop 1.
HDSL Loop 2 ALM LED Displays alarm state for HDSL Loop 2.
I/F ALM LED Displays alarm state for the DSX-1 and Nx64k ports.
PROT SW LED Not supported.
LOC LPBK LED Displays local (LOC) loopback state.
LOC LPBK button Activates the local HDSL analog loopback (V.54 loop 3).
REM LPBK LED Displays remote (REM) loopback state.
REM LPBK button Activates the remote interface loopback (V.54 loop 2).
V.24 (RS-232) console
port
Provides bi-directional communication between the unit and
an external maintenance terminal through a V.24 (RS-232C)
interface to allow configuration and performance monitoring
through the console screen menus as described in “System
Configuration” on page 9.
DSX-1 access jacks
LINE Provides splitting jack access to (XMT) and from (RCV) at the
DSX-1 interface. Breaks the XMT and RCV paths to permit test
signal insertion and retrieval.
BRG Provides non-intrusive bridging jack access to (XMT) and
(RCV) at the DSX-1 interface. Allows the two T1 payloads to
be monitored.
Bar code label Contains the serial number and part number of the line card,
as indicated in both bar code and text format. Also contains
the configuration number of the line card, as indicated by
"CFG: Rnn," where nn is the configuration number. For
example, CFG: R07 would indicate line card configuration
number 07.
Configuration label Contains the configuration number of the line card, as
indicated by Rnn," where nn is the configuration number. For
example, R07 would indicate configuration number 07.

700-814-112-01, Revision 01 Front Panel
UTU-814 List 1B November 24, 1999 5
For information on loopback testing and loopback LED
indications, see the Line and Network Termination Units
technical practice, section 700-804-100-xx.
Table 2. Front Panel LED Indications
LED Mode Description
HDSL Loop 1 SYNC
HDSL Loop 2 SYNC
Steady green
Slow blinking
Off
HDSL Loop is ready to transmit and
receive data across all spans.
HDSL Loop acquisition is in progress
for local span.
HDSL Loop is not configured.
HDSL Loop 1 ALM
HDSL Loop 2 ALM
Steady red
Pulsing red
Off
Loss of sync word (LOSW); margin below
threshold (MAR); or errored second count
(ES) above threshold.
Pulses for every ES on any span.
Normal transmit or receive data is in
progress.
I/F ALM Blinking red
Steady red
Loss of clock (LOC); receive alarm
indication signal (RAIS); or loss of frame
alignment (LFA).
Loss of clock (LOC) or DSX-1 signal.
PROT SW Not supported.

Inspection 700-814-112-01, Revision 01
6 November 24, 1999 UTU-814 List 1B
INSPECTION
Before installing the equipment, inspect it for signs of shipping damage. If the
equipment has been damaged in transit, immediately report the extent of the
damage to the transportation company and to PairGain Technologies.
SAFETY
To ensure your safety when servicing and installing this equipment, please
take the following precautions:
Be careful when installing or modifying telephone lines.
Dangerous voltages can be present. It is unsafe to install
telephone wiring during a lightning storm.
Always disconnect all telephone lines and power connections
before servicing or disassembling this equipment. For
performance and safety reasons, only power supplies listed
for use with telephone equipment by a locally recognized
organization should be used with PairGain equipment. All
wiring external to the product should follow the local wiring
codes.

700-814-112-01, Revision 01 Installation
UTU-814 List 1B November 24, 1999 7
INSTALLATION
Proceed as follows to install the UTU-814 into a shelf or remote enclosure.
1Install the UTU-814 into the appropriate slot (1 through 16) of a shelf or
into a single- or dual-slot remote enclosure. (See “Compatibility”on
page 2.)
2Connect the power source as instructed in the technical practice for the
shelf or remote enclosure in which the line unit is installed.
3Connect the data and HDSL line cabling as instructed in the technical
practice for the shelf or remote enclosure in which the units are installed.
4Set the DTE to the correct data rate (or keep the DTE disconnected).
The chassis ground of the shelf or remote enclosure
receiving these units must be connected to earth ground for
protection of the equipment and for safety of personnel.
Other protection is required when the network side of the
equipment is extended to an outside facility.
This product uses static sensitive components. Be sure to
wear an antistatic wrist strap connected to the chassis
ground when performing the installation procedures.

Installation 700-814-112-01, Revision 01
8 November 24, 1999 UTU-814 List 1B
HDSL STARTUP AND SYNCHRONIZATION
Power up the shelf or enclosure where the UTU-814s are installed and
observe the following:
1The HDSL SYNC LEDs should flash once per second as the units
attempt to establish synchronization.
2After approximately 30 seconds, confirm one of the following:
•The two HDSL SYNC LEDs are not blinking and the HDSL ALM
LEDs are off, indicating the units are synchronized and ready to
transmit and receive data. The units can now be configured through
the console screen menus.
•One or both of the HDSL SYNC LEDs continue to blink after
approximately one minute. This indicates that the HDSL pair that
corresponds to the LED is experiencing an excessive signal loss or
is in an open condition. Check the line and repair if necessary.
An LTU holds the configuration settings for both itself and the remote NTU.
After the two units establish synchronization, the LTU checks if the remote
NTU is the same type (that is, the same model number). If the NTU type is
the same, the LTU configures the NTU to the settings held by the LTU. If the
NTU type is different, the LTU configures the NTU to its factory default
settings.
Each unit performs a brief power-up self test. During the test,
the front-panel LED indicators flash in an incremental binary
sequence to indicate the test in progress. If the LEDs stop
incrementing, the unit has failed the self-test. If this happens,
note the final LED display pattern and contact PairGain
customer service at +714.832.9922 for assistance.

700-814-112-01, Revision 01 System Configuration
UTU-814 List 1B November 24, 1999 9
SYSTEM CONFIGURATION
After establishing communicationwith the remoteunit, the HDSL system can
be configured and performance can be monitored from the local unit. If the
HDSL link is down, the only parameters that can be changed are those on the
local unit. The LTU provides a special lockout feature that prevents users
connected to the NTU console port from changing the circuit configuration.
When enabled, this feature provides the maintenance terminal connected to
an NTU with a read-only view of the HDSL system.
MAINTENANCE TERMINAL CONNECTION
A maintenance terminal is used to access the line unit console screen menus.
Through these menus, the HDSL system is configured, monitored, tested, and
its circuit inventory is displayed.
To connect a maintenance terminal:
1Connecta standardserial cablefromthemaintenanceterminal COM port
tothe lineunit’s front panel console port. The pinouts for the console port
and maintenance terminal connectors are shown in Figure 2 on page 10.
2Configure the maintenance terminal for the following communication
settings:
•VT100 Emulation or ANSI (if VT100 is not available)
•Clear the modem initialization string if supported by the terminal
•Bits per second: 1200, 2400, 4800, 9600 (default), or 19200 bps
(recommended)
•Data bits: 8
•Parity: None
•Stop bits: 1
•Flow Control: None
The console screen menus are not available when the HDSL
line unit is under the control of a shelf management unit.

System Configuration 700-814-112-01, Revision 01
10 November 24, 1999 UTU-814 List 1B
Figure 2. UTU-814 Console Port and Maintenance Terminal
Connector Pinouts
LOGGING ON
To log on to the maintenance terminal console screen:
1Press the several times to activate the autobaud feature and
to display the Logon Password screen.
2Type the password at the prompt or press if a password has not
been established. The console screen’s menu bar displays.
The key is the factory default password. If you
establish a different password, you must type the new
password (single word, no spaces, up to eight characters) on
a subsequent log on. If the system does not respond, verify
that the Hardware Flow Control of the maintenance terminal
is set to NONE.
SPACEBAR
ENTER
ENTER

700-814-112-01, Revision 01 System Configuration
UTU-814 List 1B November 24, 1999 11
NAVIGATING MENUS
Use the keys described in Table 3 to navigate the console screen and its
menus.
Table 3. Console Screen Navigation Keys
These Keys Perform this Function
Alpha-numeric
keys
Type the underlined or highlighted letter to select and execute a menu
item. For example on the console screen menu bar, type to access
the Config drop-down menu.
Also use these keys to enter values in text fields. For example, on the
Config Date and Time menu, type the date in a DD/MM/YY format.
and keys Press the key to access a console screen drop-down menu. For
example, press the key on Config to access the Config drop-down
menu. Or press the and keys to highlight a sub-menu item, then
press to select the item. For example, press the key to
highlight Config Alarms, then press to view the sub-menu.
key Provides same function as the key.
and keys Moves horizontally across the Menu bar, except when in a text entry
field.
+ and
+
+ moves up one line and + moves down one line
on the History screens.
+ and
+
+ performs page-down and + performs page-up
functions on the History screens.
Toggles among options displayed for current menu item. For example,
to select the Application mode from the Config System Settings menu:
•Press the key to highlight the Application mode option, then
•Press the until the desired option (UNSTRUCT,
STRUCT, TSP, SINGLE) is highlighted and press to
confirm the selection.
Exits the current screen and returns to the previous screen. Selections
made on the current screen are discarded. Pressing in a text field
cancels the text entry and restores the old value.
Applies all selections on the current screen. Press twice for
numeric changes to take effect. When editing a text field, however, the
first terminates editing and a second applies any
changes.
C
↑
↑↑
↑ ↓
↓↓
↓ ↓
↓↓
↓↓
↓↓
↓
↑
↑↑
↑ ↓
↓↓
↓
ENTER ↓
↓↓
↓
ENTER
TAB ↓
↓↓
↓
←
←←
← →
→→
→
CTRL E
CTRL X
CTRL ECTRL X
CTRL C
CTRL R
CTRL CCTRL R
SPACEBAR
↓
↓↓
↓
SPACEBAR
ENTER
ESC
ESC
ENTER ENTER
ENTER ENTER

System Configuration 700-814-112-01, Revision 01
12 November 24, 1999 UTU-814 List 1B
CONSOLE SCREEN MENU STRUCTURE
The Console screen displays a row of drop-down menus that serve as a guide
to the appropriate option or screen. Figure 3 shows the structure of the
Console screen menus. Each menu is identified by name in the menu bar
(Monitor, History, Config, etc.). The “Display”and “Displays”designation
indicates that the menu or sub-menu shows one or more screens.
Figure 3. Console Screen Menu Structure

700-814-112-01, Revision 01 System Configuration
UTU-814 List 1B November 24, 1999 13
SYSTEM SETTINGS
The settings available in the Config System Settings menu are listed in
Table 4.
Table 4. Settings in Config System Settings Menu
System Setting Description (settings in boldface type are default settings)
Application mode Select one of the following application modes:
UNSTRUCT System operates in the unstructured application mode using 24 time
slots. Use when LTU and NTU use either the DSX-1 or Nx64k port with
no framing. Two-port (DSX-1 and Nx64k) operation is not possible.
STRUCT System operates in the structured application mode using 24 time
slots. Use to transport framed voice channels between the LTU and
NTU DSX-1 ports and serial data between the Nx64k ports.
TSP System operates in time slot prioritization mode. Time slots 1 through
12 transport high priority traffic over Loop 1; time slots 13 through 24
transport low priority traffic over Loop 1. The NTU must be locally
powered. Remote Power Feed must be set to NONE.
SINGLE System operates in single-pair mode using time slots 1 through 12 on
Loop 1. Use to transport framed voice channels between the LTU and
NTU DSX-1 ports or serial data between the Nx64k ports. The NTU
must be locally powered. Remote Power Feed must be set to NONE.
Remote Power
Feed mode
Select one of the following power feed modes:
NONE Disables the remote power feed mode. The NTU must be locally
powered. Used for TSP and SINGLE application modes.
POWER LTU supplies full power to the NTU through both loops.
WETTING LTU supplies a low level DC current to prevent corrosion of HDSL lines
and connections. The NTU must be locally powered.

System Configuration 700-814-112-01, Revision 01
14 November 24, 1999 UTU-814 List 1B
System Setting Description (settings in boldface type are default settings)
Remote Power
Feed Loop
No selection available.
BOTH BOTH is displayed in UNSTRUCT, STRUCT, and TSP application
modes. The LTU uses Loop 1 and Loop 2 to supply power to the NTU.
LOOP1 LOOP1 displays in SINGLE application mode when POWER is selected
for Remote Power Feed mode. This is followed by the warning
NTU LOCAL POWER REQUIRED, PROCEED ANYWAY (Y/N).
Remote Console
Access
Select whether system settings can be made from the NTU console
screen or the settings are read-only. This option is set only at the LTU.
ALLOWED NTU console screens can be used to make system settings.
BLOCKED NTU console screens are read-only. The LOC and REM pushbuttons
on the NTU are also disabled. System settings can be made only from
the LTU console screen.
Protection Switch
Command
Not supported.
Local Unit Role
(LTU or NTU)
Configures the UTU-814 as LTU (master) or NTU (slave). The default
configuration is NTU (slave). Note that changing the Local Unit Role
of the UTU-814 causes the unit to reset and the LEDs to cycle.
LTU Configures the UTU-814 as LTU (master). The LTU-configured
UTU-814 does not provide line power to other HDSL units.
NTU Configures the UTU-814 as NTU (slave). The NTU-configured
UTU-814 cannot receive power from another UTU; it can, however,
receive power from a conventional LTU.
Table 4. Settings in Config System Settings Menu (Cont.)