Paradyne Hotwire 8775 User manual

TM
1
8775-A2-GZ40-10 March 1999
Hotwire8775 M/SDSL Termination Unit
Installation Instructions
Document Number 8775-A2-GZ40-10
March 1999
Product Documentation on the World Wide Web
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products.
Complete documentation for this product is available at www.paradyne.com.
Select
Library → Technical Manuals → Hotwire DSL & MVL Systems.
Select the following document:
8775-A2-GB20
Hotwire 8775 M/SDSL Termination Unit User’s Guide
To request a paper copy of a Paradyne document:
Within the U.S.A., call 1-800-PARADYNE (1-800-727-2396)
Outside the U.S.A., call 1-727-530-8623
Hotwire8775 E1 M/SDSL Termination Unit
The Hotwire 8775 Termination Unit is a circuit card assembly (CCA) that contains
four E1 Multirate Symmetric Digital Subscriber Line (M/SDSL) ports. When the
8775 Termination Unit is used in a Hotwire 8600 or 8800 Series Digital Subscriber
Line Access Multiplexer (DSLAM) chassis, it transports 2048 kbps signals over
traditional twisted-pair telephone wiring.
!HANDLING PRECAUTIONS FOR
STATIC-SENSITIVE DEVICES
This product is designed to protect sensitive components from damage
due to electrostatic discharge (ESD) during normal operation. When
performing installation procedures, however, take proper static control
precautions to prevent damage to equipment. If you are not sure of the
proper static control precautions, contact your nearest sales or service
representative.
496-15104

2 8775-A2-GZ40-10
March 1999
Installation Overview
Installation and configuration of the Hotwire 8775 Termination Unit consists of:
HInstalling the Termination Unit in the DSLAM.
HConnecting to the DTE.
HConnecting to an MDF.
HProviding initial unit identity information or changing existing identity
information.
HConfiguring your unit using the Configuration Edit menus.
Before you install the Hotwire 8775 Termination Unit, read the Important Safety
Instructions on page 23.
Be sure to register your warranty at www.paradyne.com. Select Service &
Support → Warranty Registration.
Tool Required
-Small- to medium-size flat-blade screwdriver.
Planning the 8775 Termination Unit Installation
Review the following list to help plan for the installation.
-Obtain the applicable cables; refer to Cables You Need on page 3.
-Make sure the Hotwire DSLAM chassis is installed and power is supplied to
the chassis.
-After the 8775 Termination Unit is installed, there are configuration
procedures that must be performed before you can begin to use the 8775
Termination Unit. Refer to the User’s Guide for more detailed configuration
procedures.

3
8775-A2-GZ40-10 March 1999
Cables You Need
The following customer-provided cables are used with this product.
For the network connection:
Plug-ended Telco 50-pin cable for connection from the Hotwire 8600 DSLAM
LINE port or one of the Hotwire 8800 DSLAM LINES ports to the Main
Distribution Frame (MDF) or other demarcation point.
For the DTE connection, one of the following:
100-pin plug to four DB15 (X.21)
100-pin plug to four DB25 (EIA-530A)
100-pin plug to four DB37 (RS-449)
100-pin plug to four MS34 (V.35)
For more information refer to
Cables and Pin Assignments in the User’s Guide.
Installing DSL Cards
Use a small- to medium-size flat-blade screwdriver to install the 8775 Termination
Unit.
When using a . . . Install the 8775 Termination Unit in . . .
Hotwire 8600 Series
DSLAM base chassis Slot 2 or 3. Slot 1 of the Hotwire 8600 DSLAM base chassis must contain a Management Communications
Controller (MCC) card.
Hotwire 8600 Series
DSLAM expansion chassis Slot 1, 2, or 3.
Hotwire 8800 Series
DSLAM chassis Any one of the first 18 slots (i.e., Slots 1 through 18). Slot 19 is reserved for the MCC and Slot 20 is reserved for
future use.
An 8775 Termination Unit can be installed, removed, and replaced from a Hotwire
DSLAM chassis without disrupting service to the other cards in the chassis.
NOTE:
When installing the 8775 Termination Unit, you need to remove the filler plate
before proceeding.
Do not discard unused filler plates. Each slot in the chassis must contain a
circuit card or a filler plate. Store all unused filler plates in a safe place. You
may need to use the filler plates to cover open slots in the chassis at a later
time.

4 8775-A2-GZ40-10
March 1999
Procedure
To install an 8775 Termination Unit:
1. Determine in which slot the 8775 Termination Unit will be installed. Verify that
cards in adjacent slots have been fastened.
2. Remove the filler plate from the installation slot.
3. Insert the 8775 Termination Unit:
— For a Hotwire 8600 Series DSLAM chassis – hold the 8775 Termination
Unit horizontally with component side facing up and insert it into the left
and right card guides.
A
INPUT
AC
48VDC CLASS 2 OR
LIMITED PWR SOURCE
RTN48V
AAB B
LAN/WAN SLOT
2
46
B
.
.
.
3.
1
2
POSITION
STACK ALM A
IN
B
DC FUSES 5DC PWR
FAN
OUT SERIAL MCC 1
MANAGEMENT
3
LINE 1
2
3
98-15832
SYSTEM
OKAlrm Test TXRXCol
ETHERNET
M/SDSL
8775
SYSTEM
OKAlrm Test TXRXCol 1234
ETHERNET
DSL PORT
ESD
— For a Hotwire 8800 Series DSLAM chassis – hold the 8775 Termination
Unit vertically with component side facing right and insert it into the top
and bottom card guides.
ALARMS
Major MinorFanBA
POWER
MCC
SYSTEM
OK
Alm
Test
ETHERNET
TX
RX
Coll
98-15328-01
MGT
SERIAL
MGT
10BT ALARM
SLOTS 1 - 6
SLOTS 7-12
SLOTS 13-18
LINES
AB
-48V (A)
-48V INPUT
-48V (B) RET (A) RET (B) FR GND
246810 12 14 16 18
19
1357911 13 15 17
LAN/WAN SLOT 20
LAN/WAN SLOT
Slot 1
DSL
SYSTEM
OK
Alm
Test
ETHERNET
TX
RX
Coll
DSL PORT
1
2
3
4
DSL Card

5
8775-A2-GZ40-10 March 1999
4. Slide the 8775 Termination Unit into the slot until the power and network
connectors seat firmly in the mating connectors on the backplane.
CAUTION:
Do not force the 8775 Termination Unit into the slot. This could damage
the backplane connectors. If the card does not seat properly, remove
the card and reinstall it. If it still does not seat properly, call your
service representative.
The 8775 Termination Unit performs a power-up self-test. All of the LEDs turn
ON and OFF briefly. When the self-test is completed successfully, the
SYSTEM OK LED will turn ON. Make sure the SYSTEM OK indicator on the
8775 Termination Unit faceplate is ON.
5. If the LED is not ON, refer to
Messages and Troubleshooting in the User’s
Guide.
6. Secure the 8775 Termination Unit by fastening the screws at each end of the
faceplate.
NOTE:
The 8775 Termination Unit may be replaced without system disruption (i.e.,
you can remove and reinstall a card without powering down the Hotwire
DSLAM chassis and disrupting service to the other cards). To remove an
8775 Termination Unit from the Hotwire DSLAM chassis, unfasten the screws
on both ends of the faceplate. Then push the ejector handles outward and
slide the card out.
Ensure that adjacent cards are fastened before removing a card.
When swapping the old 8775 Termination Unit with a new 8775 Termination
Unit, note that the 8600 DSLAM retains the Media Access Control (MAC)
address, also referred to as the physical address. This means that the new
8775 Termination Unit will have the same MAC address as the old one.

6 8775-A2-GZ40-10
March 1999
Cable Management
The optional Cable Guide connects to the front of the Hotwire 8800 Series
DSLAM and provides strain relief and control of the DTE cables. Install the Cable
Guide before installing the cables.
97-15777
ALARMS
Major MinorFanBA
POWER
MGT
SERIAL
MGT
10BT
ALARM
SLOTS 1 - 6
SLOTS 7-12
SLOTS13-18
LINES
-48V (A)
-48V INPUT
-48V (B)
RET (A)
RET (B)
FR GND
246810 12 14 16 18
19
1357911 13 15 17
LAN/WAN SLOT
20
LAN/WAN SLOT
SLOTS13-18
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703ALRM
DSLPORT
LINK-UP
4
SYSTEM
OKAlrm
Test
123
G.703ALRM
4
Front Rail
Existing
Screw
Bottom Hole for
Mounting in 19"
Rack or Cabinet
Front Rail
Top Hole for
Mounting in 23"
Rack or Cabinet
Screw
Washer
and Nut

7
8775-A2-GZ40-10 March 1999
Connecting to the DTE Equipment
Connection to the four ports of the 8775 Termination Unit is through the 100-pin
EIA-530 interface connector on its faceplate. Use one of the DTE cables listed
under
Cables You Need on page 3.
Procedure
To connect the Hotwire 8775 Termination Unit to your DTE equipment:
1. Connect the 100-position connector of the cable to the connector on the
faceplate of the 8775 Termination Unit. Align one end of the cable connector
with the card connector, then push on the cable connector until it seats.
The end of the cable connector has a release button. To remove the
connector, press the release button and pull the connector away from the
card.
97-15726
-48V RTN F
G
ABAB
48VD
ETHERNET
MCC
8000
SYSTEM
OKAlrm
Test
TXRXCol
4
SYSTEM
OKAlrm
Test
123
123
G.703 ALRM
DSL PORT
LINK-UP
4
4
SYSTEM
OKAlrm
Test
123
123
G.703 ALRM
DSL PORT
LINK-UP
4
2. Feed the cable through the Cable Guide if it is in use. When all cables are
installed, anchor them with cable ties to the rack, DSLAM, or Cable Guide.
3. Connect the four terminating connectors to your DTE equipment.

8 8775-A2-GZ40-10
March 1999
Connecting to an MDF
You can connect the Hotwire DSLAM chassis containing the 8775 Termination
Unit to an MDF or other demarcation point. Do not connect it to a POTS splitter.
Procedure
To connect the Hotwire DSLAM chassis containing the 8775 Termination Unit to
an MDF:
1. Plug the Telco 50-pin cable into the appropriate LINE port on the front panel
of the chassis:
—On a Hotwire 8600 Series DSLAM chassis:
98-15833
A
INPUT
AC
48VDC CLASS 2 OR
LIMITED PWR SOURCE
RTN48V
AAB B
LAN/WANSLOT
2
46
B
.
.
.
3.
1
2
POSITION
STACKALM A
IN
B
DC FUSES
T4A, MIN. 48V 5PWR
FAN
OUT SERIAL MCC 1
MANAGEMENT
3
LINE
1
2
3
SYSTEM
OKAlrm Test TXRXCol
ETHERNET
MCC
8000
SYSTEM
OKAlrm
Test TXRXCol 1234
ETHERNET
DSL PORT
M/SDSL
8775
SYSTEM
OKAlrm Test TXRXCol 1234
ETHERNET
DSL PORT
M/SDSL
8775
Anchor
Mount
Telco 50-Pin
Connector
ESD

9
8775-A2-GZ40-10 March 1999
—On a Hotwire 8800 Series DSLAM chassis:
SLOTS 13-18
SLOTS 7-12
SLOTS 1-6
97-15325
Anchor Mount
Telco 50-Pin
Connector
LINES
SLOTS 1-6
LINES
Shorter
Telco
Captive Screw
2. Replace the longer Telco cable captive screw with a shorter connector
captive screw, which is provided with the Hotwire DSLAM chassis.
3. Insert a cable tie (provided with Hotwire DSLAM chassis) through the tie
mount to hold the Telco 50-pin connector in place. If more than one Telco
cable is being connected, span the two or three connectors.
4. Make sure the other end is connected to the appropriate MDF or demarcation
point.
Refer to
Cables and Pin Assignments in the User’s Guide for pinouts.
NOTE:
If you are connecting the Telco 25-pair, 50-pin cable to an MDF, a converter
may be necessary for terminating the other end of the cable on a punchdown
block before cross-connecting to an MDF.

10 8775-A2-GZ40-10
March 1999
8775 Termination Unit LEDs
The following table describes the meaning and states of the LEDs on the 8775
Termination Unit faceplate.
Type LED LED is . . . Indicating . . .
SYSTEM OK Green
Off
Normal operation; card functioning normally.
No power to card, or card failure.
Alrm Amber
Off
Device failure, or Power-On Self-Test (POST)
failure.
No alarms.
Test Amber
Amber,
flashing
Off
Loopback test or 511 test pattern in progress.
POST in progress.
No tests.
SYNC
PORT 1, 2, 3, 4 Green
Amber
Amber,
flashing
Off
Interchange circuits for the port are in the
correct state to transmit and receive data.
The port is configured to monitor DTR and/or
RTS and no monitored lead is asserted.
Data Channel Loopback (DCLB) or Data
Terminal Loopback (DTLB) is active on the
port.
The port is disabled.
DSL PORT
LINK-UP 1, 2, 3, 4 Green
Off
Amber
Amber,
flashing
DSL link is up.
DSL link is down.
DSL training in progress.
OOF condition.
4
M/SDSL
8775
SYSTEM
OKAlrm
Test
123
123
SYNC PORT
DSL PORT
LINK-UP
4
98-15834

11
8775-A2-GZ40-10 March 1999
Logging In to the Hotwire DSLAM
You can log in to the Hotwire DSLAM system using either a local
VT100-compatible terminal or a remote Telnet connection. The Hotwire DSLAM
system accepts only one login session at a time.
At the Operator Login screen, enter your login ID and password.
NOTE:
The login ID and password are case-sensitive; that is, the system recognizes
both upper- and lowercase letters. For example, if you enter your user name
and password information in upper case letters and your assigned user name
and password are in upper- and lowercase letters, the system will not let you
log in.
After entering your login ID and password, the system displays the Hotwire
Chassis Main Menu.

12 8775-A2-GZ40-10
March 1999
Selecting the 8775 Card from the DSLAM
From the Hotwire Chassis Main Menu, select Card Selection to display the cards
present in the chassis by type and slot number. The Card Selection screen also
displays general and interface status for each card.
Procedure
To access the 8775 Termination Unit Main Menu screen:
1. From the Hotwire Chassis Main Menu screen, select Card Selection.
The Card Selection screen appears.
2. Verify that the card you want to access appears on the Card Selection
screen. If the card does not appear, check the configuration of the MCC.
3. At the Goto Card (M for MCC or slot# for DSL): prompt, enter the
number of the slot, then press Enter. For example, if you want to configure
the card in Slot 4, enter 4.
The 8775 Termination Unit Main Menu appears.

13
8775-A2-GZ40-10 March 1999
Entering Identity Information
After accessing your unit for the first time, use the Change Identity screen to
determine SNMP administrative system information that will be displayed on the
Identity screen of the Status branch. To access the Card Identity screen, follow
this menu selection sequence:
Main Menu → Control → Change Identity
Network Configuration
The following illustration shows an E1 network application using an 8775 M/SDSL
Termination Unit for access concentration in a central office (CO). A frame relay
switch and a router are connected, through the termination unit, to partner units
supporting an E1 host or router, and frame relay encapsulated or unframed data.
Frame
Relay
Switch
Router
E1 Host
(Frame Relay
Encapsulated
Data)
98-15857-01
Router
(Frame Relay
Encapsulated
Data)
V.35
V.35
V.35
Router 2.048 Mb
over
SDSL
V.35
V.35
V.35
8775 Termination Unit
in 8600 DSLAM
E1 Network
CO Site 7975
7975
7975
Customer
Premises (CP)
A DSLAM-to-DSLAM configuration requires that the 8775 at one end of the link
be set to NTU mode. 8775 Termination Units default to LTU mode.

14 8775-A2-GZ40-10
March 1999
Configuring the 8775 Termination Unit
Configuration option settings determine how the 8775 Termination Unit operates.
Use the Configuration branch of the 8775 Termination Unit menu to display or
change configuration option settings.
The 8775 Termination Unit is shipped with factory settings in the Default Factory
Configuration area. If the factory default settings do not support your network’s
configuration, customize the configuration options for your application.
Accessing and Displaying Configuration Options
To display the configuration options, you must first load a configuration option set
into the edit area.
To load a configuration option set into the configuration edit area, follow this
menu selection sequence:
Main Menu → Configuration (Load Configuration From)
main/configuration Hotwire
Slot: 4 Model: 8775
LOAD CONFIGURATION FROM:
Current Configuration
Configuration Loader
Default Factory Configuration
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
Î
Î
ÎÎ
ÎÎ
Make a selection by placing the cursor at your choice and pressing Enter.
If you select . . . Then . . .
Current
Configuration The selected configuration option set is loaded and the Configuration Edit/Display menu screen appears.
Default Factory
Configuration The selected configuration option set is loaded and the Configuration Edit/Display menu screen appears.
Configuration
Loader The Configuration Loader screen is displayed allowing you to upload or download configurations from a TFTP server.

15
8775-A2-GZ40-10 March 1999
Configuration Edit/Display
The Configuration Edit/Display screen is displayed when the current, customer, or
default configuration is loaded and allows groups of configuration options to be
displayed. To access the Configuration Edit/Display screen, follow this menu
selection sequence:
Main Menu → Configuration → Current Configuration
– or –
Main Menu → Configuration → Default Factory Configuration
Î
ÎÎ
main/config/edit Hotwire
Slot: 4 Model: 8775
CONFIGURATION EDIT/DISPLAY
Network
SYNC Port
Copy Ports
System Options
Management and Communication
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
Save
Select . . . To Access the . . . To Configure the . . .
Network Network Interface Options, Table 1 SDSL network interface
Ports 1–4.
SYNC Port Synchronous Data Port Options,
Table 2 Synchronous DTE interface Ports 1–4.
Copy Ports Copy Ports Options, Table 3 SDSL network and
synchronous DTE interface
ports by copying options
from port to port.
System
Options System Options, Table 4 General system options of the unit.
Management
and
Communication
Telnet Session Options, Table 5
General SNMP Management
Options, Table 6
SNMP NMS Security Options,
Table 7
SNMP Traps Options, Table 8
Management support of the
unit through SNMP and
Telnet.

16 8775-A2-GZ40-10
March 1999
Table 1. Network Interface Options
Margin Threshold
Possible Settings: –5db, –4db, –3db, –2db, –1db, 0db, 1db,2db,3db,4db,5db,6db,
7db,8db,9db,10db
Default Setting: 0db
Determines the level, expressed in decibels, at which a signal-to-noise margin condition
is recognized.
Excessive Error Rate Threshold
Possible Settings: 1E–4,1E–5,1E–6,1E–7,1E–8,1E–9
Default Setting: 1E–6
Determines the error rate at which an excessive error rate (EER) condition is
recognized. The rate is the ratio of the number of CRC errors to the number of bits
received in a certain period.
AutoRate
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies whether the DSL line will automatically train up to the best rate or if the line
rate will be user selectable.
DSL Line Rate
Possible Settings: 144, 272, 400, 528, 784, 1040, 1552 (2 Mbps unit only),
2064 (2 Mbps unit only)
Default Setting: 144
Specifies the DSL line rate of the unit. This option is only available when the unit is
configured as an LTU and AutoRate is disabled (unit is in fixed rate).
Peer IP Address
Possible Settings: 000.000.000.001 – 223.255.255.255, Clear
Default Setting: 000.000.000.000
Specifies the peer IP address providing the remote management link on the DSL loop.
Circuit Identifier
Possible Settings: [ASCII Text], Clear
Default Setting: [blank]
Uniquely identifies the circuit number of the transmission vendor’s DSL line for
troubleshooting purposes.

17
8775-A2-GZ40-10 March 1999
Table 2. Synchronous Data Port Options (1 of 2)
Port Status
Possible Settings: Enable, Disable
Default Setting: Enable
Determines whether the port can be configured and used.
Payload Rate
Possible Settings: 64,128,192,256,320,384,448,512,576,640,704,768,832,896,
960,1024,1088,1152,1216,1280,1344,1408,1472,1536,1600,1664,1728,1792,
1856,1920,1984,2048
Default Setting: 128
NOTE: Payload rates of 1088 kbps and higher pertain only to the 2 Mbps
termination unit.
Specifies the payload rate of the port.
Transmit Clock Source
Possible Settings: Internal, External
Default Setting: Internal
Specifies whether the transmitted data for the synchronous data port is clocked using
an internal clock provided by the 8775 Termination Unit (synchronized to the clock
source specified by the clock source configuration option) or an external clock provided
by the DTE connected to the synchronous data port. If an external clock is used, it must
be synchronized to the same clock source as the 8775 Termination Unit.
Invert Transmit Clock
Possible Settings: Disable, Enable
Default Setting: Disable
Specifies whether the clock supplied by the 8775 Termination Unit on the TXC
interchange circuit DB (CCITT 114) is phase inverted with respect to the Transmitted
Data interchange circuit BA (CCITT 103). This configuration option is useful when long
cable lengths between the 8775 Termination Unit and the DTE are causing data errors.
Send All Ones on Data Port Not Ready
Possible Settings: Both, Disable, DTR, RTS
Default Setting: Both
Specifies the conditions on the data port that determine when valid data is not being
sent from the DTE. When this condition is detected, all ones are sent to the network.
Action on Network LOS Alarm
Possible Settings: Halt, None
Default Setting: Halt
Specifies the action taken on the synchronous data port when an LOS (Loss Of Signal)
alarm is received on the network interface.
Network Initiated Data Channel Loopback
Possible Settings: Disable, Enable
Default Setting: Disable
Allows the initiation and termination of a Data Channel Loopback (DCLB) by the receipt
of a DCLB-actuate sequence or DCLB-release sequence from the network or far-end
device.

18 8775-A2-GZ40-10
March 1999
Table 2. Synchronous Data Port Options (2 of 2)
Port (DTE) Initiated Loopbacks
Possible Settings: Disable, DTLB, DCLB, Both
Default Setting: Disable
Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or
remote Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is
equivalent to a V.54 loop 3, and DCLB is equivalent to a V.54 loop 2.) Control of these
loopbacks is through the DTE interchange circuits as specified by the V.54 standard.
Table 3. Copy Ports Options
From: Port
Possible Settings: 1,2,3,4
Default Setting: 1
Controls the source of the configuration options.
To: Port
Possible Settings: 1,2,3,4, All
Default Setting: 2
Controls the target of the configuration options.
NOTE: Peer IP Address and Circuit Identifier are
not copied.
Table 4. System Options
DSL Mode
Possible Settings: LTU, NTU
Default Setting: LTU
Controls whether the unit is configured as a control unit or tributary unit.
NOTE: Changing this option will reset the card.
Test Timeout
Possible Settings: Enable,Disable
Default Setting: Enable
Allows user-initiated tests to end automatically. The feature should be enabled when the
unit is remotely managed, so that control can be regained after a test is accidentally
executed.
NOTE: Tests commanded by the DTE or network-initiated tests are not affected by
this test timeout.
Test Duration (min)
Possible Settings: 1–120
Default Setting: 10
Number of minutes for a test to be active before automatically ending.
Test Duration (min) option appears when Test Timeout is enabled.

19
8775-A2-GZ40-10 March 1999
Table 5. Telnet Session Options
Telnet Session
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies if the 8775 Termination Unit will respond to a Telnet session request from a
Telnet client on an interconnected IP network.
Telnet Login Required
Possible Settings: Enable, Disable
Default Setting: Disable
Used to secure access to the ATI through a Telnet session. Login IDs are created with a
password and access level.
Session Access Level
Possible Settings: Administrator,Operator
Default Setting: Administrator
The Telnet session access level is interrelated with the access level of the Login ID.
Inactivity Timeout
Possible Settings: Enable, Disable
Default Setting: Disable
Provides automatic logoff of a Telnet session.
Disconnect Time (Minutes)
Possible Settings: 1–60
Default Setting: 5
Number of minutes of inactivity before a Telnet session terminates automatically.
Timeout is based on no keyboard activity.
Disconnect Time (minutes) option appears when Inactivity Timeout is enabled.

20 8775-A2-GZ40-10
March 1999
Table 6. General SNMP Management Options
SNMP Management
Possible Settings: Enable, Disable
Default Setting: Disable
Enables or disables the SNMP management features.
Community Name 1
Possible Settings: ASCII text field, Public
Default Text: Public
Identifies the name of the community allowed to access the unit’s MIB. The community
name must be supplied by an external SNMP manager when that manager attempts to
access an object in the MIB.
Name 1 Access
Possible Settings: Read, Read/Write
Default Setting: Read
Determines the access level for Community Name 1.
Community Name 2
Possible Settings: ASCII text field, Public
Default Text: Public
Identifies the name of the second community allowed to access the unit’s MIB. The
community name must be supplied by an external SNMP manager when that manager
attempts to access an object in the MIB.
Name 2 Access
Possible Settings: Read, Read/Write
Default Setting: Read
Determines the access level for Community Name 2.