Data Network Terminal Single-port and Multiport Operating Instructions
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Other product names mentioned in this documentation may be trademarks of their respective
companies, and they are mentioned for identification purposes only.
The following products comply with the protection requirements of the European Union Council
Directive 89/336/EEC relating to electromagnetic compatibility (EMC), provided that installed
using EMC-compatible installation practices (installation in mechanical housings stated to be
EMC-compatible and using cabling material [at least as well shielded] and practices as stated
in relevant Nokia user manuals):
These operating instructions introduce the DNT2Mi Data Network Terminal and
provide information needed for its installation and use.
The terminal interface units that are used in DNT products are presented
separately in document DTE Interface Units for Nokia Data Network TerminalsOperating Instructions.
Figure 1.Single-port (above) and multiport (below) DNT2Mi terminals
Nokia DNT2Mi is a single- or multiport (sp/mp) data access network terminal
intended for customer premises. It provides a two-wire or four-wire SHDSL line
interface (ITU-T G.991.2) and up to three interchangeable DTE interface units.
The following interface units are available (for more information, refer to Table
Data Network Terminal Single-port and Multiport Operating Instructions
•G.704/2M
•EIA-530-A
•Ethernet
•VF
•D2048
Single-port and multiport versions
The single-port version offers one of the DTE interface types mentioned above,
whereas the multiport version can house up to three independent DTE interface
types. Additionally, the multiport version includes Time Division Multiplexing
(TDM), which allows dividing the transmissioncapacity overeach DTE interface
according to application needs.
Power supply
DNT2Mi can be fed either with AC 90 to 264 V, DC -20 to -75 V, or remotely via
ACL2i through the line.
Management
DNT2Mi can be managed locally with the front panel keys, Nokia’s hand-held
Service Terminal, or with a Microsoft Windows-based Macro Service Terminal
Emulator (MSTE) program running on a PC. For more information about
supported Windows operating systems, refer to the Macro Service TerminalEmulator User's Manual.
DNT2Mi can also be managed remotely with Nokia's Network Management
System (NMS).
The DNT2Mi Data Network Terminal can be used for Local Area Network
(LAN) and Private Automatic Branch Exchange (PABX) connections (see Figure
2). The device can be controlled, configured, and tested either by using the front
panel keys and the LCD display or via Nokia’s common network management
system.
Applications
PDH
network
Local
Data
PABX
SHDSL
DNT2Mi
Multiport
Figure 2.An example of DNT2Mi use
DNT2Mi canalso be used in point-to-pointconnections with a DNT2Mi terminal
at both ends of the line (see Figure 3).
Data Network Terminal Single-port and Multiport Operating Instructions
Data
PABX
LAN-IC
SHDSL
DNT2Mi multiport
Figure 3.DNT2Mi used in a point-to-point application
DNT2Mi multiport
Data
PABX
LAN-IC
DNT2Mi provides an n x 64 kbit/s (n = 1 to 32) data access and enables TDM
multiplexing of line rates to three n x 64k ports. It also incorporates V.110 rate
adaptation enabling port rates lower than 64 kbit/s.
The line rate is n x 64 kbit/s (n = 3 to 32 in two-wire connection; n = 6 to 32 in
four-wire connection but only even numbers can be used), and the Trellis Coded
Pulse Amplitude Modulation (TC-PAM) coding is used for transmission.
Data Network Terminal Single-port and Multiport Operating Instructions
STATUS
PWR TESTP1P2
P3
Single-port DNT2Mi
STATUS
PORT
PWR TEST
1. LED
indicators
Figure 4.Indicators and keys of the two DNT2Mi units
4.1.2Local management interface
The local managementinterface is located behind the front panel door(see Figure
5). The interface is used to manage DNT2Mi with Macro Service Terminal
Emulator (MSTE) running on a PC or with other Nokia management software.
DTR DSR DCD RTS CTS
DTR DSR DCD RTS CTS
2. LCD
display
OK EXIT
DNT2Mi
OK EXIT
DNT2M i
3. Front
panel keys
If signal 108 (DTR) is on, connecting the Service Terminal Emulator will
disconnect DNT2Mi from the remote network management. If signal 108 is off,
the entire network can be managed through this equipment.
Management interface cables of DNT2Mi are listed in Table 1.
Electrically, management interface signals comply with ITU-T V.28 or V.11. The
selection is made using either front panel menus or Q1 menus.
Data Network Terminal Single-port and Multiport Operating Instructions
Table 1.Management interface cables (Continued)
CodeNameConnector
Length
type
E62711.01Management cable
(ST -> DNT2Mi)
DZ60639.1Management cable
(PC -> DNT2Mi)
ST = Service Terminal
DNT2Mi = Single-port or multiport n x 64 kbit/s stand-alone Network Terminal
PC = PC + Service Terminal Emulator
ACL2i = 2 Mbit/s SHDSL Rack-mounted Line Terminal
RJ45/D15F1.5 m
RJ45/D25F3 m
Several DNT2Mi units can be connected to the same Q1 bus of V.11-type via a
local management interface.
Data Network Terminal Single-port and Multiport Operating Instructions
6-pin modular jack, RJ-11
Line
123456
Figure 8.Line interface connector
4.2.1Terminal interfaces
This section briefly introduces the DTE interface unit options. For more detailed
information, refer to document DTE Interface Units for Nokia Data NetworkTerminals Operating Instructions.
Pin
Line interface
Line 1a
1.
Line 1b
2.
3. Not connected
4. Not connected
5.
Line 2a (not in use in 2-w mode)
Line 2b (not in use in 2-w mode)
Data Network Terminal Single-port and Multiport Operating Instructions
EC PWR
EA
EL WL
LMI 10Base-T
18
CAS
Figure 10.DTE interface options (continued)
The interface type is selected by installing an appropriate interface unit. You can
do this without opening the terminal's case. The interface unit types are given in
Table 2.
1) In accordance with the ITU-T Recommendation V.28, this type of electrical
interface can be used up to 19.2 kbit/s. With proper cabling, however, operation up to
64 kbit/s is possible.
This chapter provides instructions on how to mechanically install and connect
DNT2Mi. The menu settings required for bringing the unit into use can be found
in Chapter 6.
5.1Electromagnetic compatibility
DNT2Mi complies with EMC specifications (refer to Chapter 10) when the
following conditions are fulfilled:
Installing DNT2Mi
•The securing screws of the multiport DNT2Mi cover are properly fastened.
•All multiport DNT2Mi ports are provided with adapters, or unused ports
provided with dummy plates.
•The DTE cables and connectors are provided with reliable shielding.
•The connector’s connecting screws are properly fastened, so that shielding
integrity from the metal housing of the equipment to the cable shield over
the interconnecting interface is secured.
•A grounded 3-conductor mains cord and a grounded mains outlet for
mains-powered DNT2Mi terminals, or a similar grounding for DCpowered versions, is used.
5.2Grounding of DNT2Mi
The AC-powered version of DNT2Mi is grounded properly when the mains cord
is connected to a grounded mains outlet.
The DC-powered version of DNT2Mi has a separate pin reserved for the ground
connection, refer to Section 5.8.
Data Network Terminal Single-port and Multiport Operating Instructions
5.3Clearances around DNT2Mi
When installing DNT2Mi on a wall or freely on a horizontal level, you must
ensure that there is an adequate space for connecting cables. Recommended
clearances are shown in Figure 11.
In a modem-shelf installation, slot sizing of the shelf ensures adequate horizontal
clearances between the units.
Heat released from the unit is insignificant, and does not therefore set
requirements on the clearances around the equipment. DNT2Mi is cooled through
natural convection through air inlets and outlets located in the bottom and top of
it.
Caution
Do not cover DNT2Mi. The air inlets and outlets must be unobstructed to
maintain proper circulation of air.
First examine the unit and make sure that it has not been damaged during
transportation. Also, check that you have the cables needed for connections
(mains cable, DTE cable, line cable).
Then proceed according to the steps below:
1.Insert DTE interface units into the DNT2Mi terminal, if needed, refer to
Section 5.5.
2.Insert DNT2Mi in a special shelf-like modem subrack or on a wall, if
needed, refer to Section 5.7. Otherwise, proceed with the free-standing
installation described in Section 5.6.
3.Plug the mains cord into a grounded mains outlet (AC version) or connect
the DC power lines (refer to Section 5.8).
Installing DNT2Mi
4. Connect DNT2Mi to your DTE and to the line.
5.Switch on the power (AC or DC). The modem performs a self test.
6.Adjust the LCD contrast, if needed, refer to Section 5.9.2.
Then proceed to check that the main settings are correct (the settings are
described in Chapter 6). The settings can be checked and altered using
either the front panel keys and display (Chapter 8) or by using the Q1
connection (Chapter 9).
5.5Inserting DTE interface units
Caution
The equipment is sensitive to static electricity. When handling the units you
should follow the general instructions concerning handling of ESD-sensitive
equipment. You should always take antistatic precautions (such as a wrist
grounding) when handling a plug-in unit once it has been removed from its
antistatic packaging.
If the DTE interface units are not pre-inserted or a unit needs to be changed,
follow the instructions below.
Data Network Terminal Single-port and Multiport Operating Instructions
To install DNT2Mi in a modem shelf:
1.Insert DNT2Mi into a free slot in the shelf.
•Push until the unit locks into the stopper at the end of the slot rail.
2.Fasten the locking bar with the thumb screws included to lock DNT2Mi
into the shelf.
•Position the locking bar its openings facing upwards and flat side
against the upper edge of the shelf.
•Position the thumb screws through the locking bar’s openings into
the fasteningholes of the shelf andtighten the screws. Alternatively,
you can first tighten the screws loosely, then slide the locking bar
into its place and tighten the screws firmly.
Data Network Terminal Single-port and Multiport Operating Instructions
5.8Connecting power supply
This section specifies the requirements for the mains power supply of the site.
WARNING
MAINS VOLTAGE!
Follow the national legislation when working with the power supply.
DNT2Mi must be permanently wired to a disconnect device (for example
circuit breaker) in accordance with the current local and national wiring
standards.
The following warning applies to the AC power supply:
The protective ground wire can only be used for protective conductor
installations. Using the protective ground conductor for other purpose is
dangerous to life. Ensure that the ground connection is established before the
power outlet is connected to the power interface.
The power supply of DNT2Mi can operate at the following voltages:
•90 to 264 V
•-20 to -75 V
(AC-powered unit)
AC
(DC-powered unit)
DC
•50 to 150 V (remote-powered via ACL2i).
Power interfaces are located on the rear panel of DNT2Mi.
AC mains is recommended to be protected with a lightning and transient
overvoltage protector (mainswire-in protector). This protection is not included in
DNT2Mi.
Note
In general, mains fuses and supply cables have to be rated according to the
national electric safety regulations.
DNT2Mi can be connected either to a positive-grounded or to a negativegrounded DC power system. Principles of the DC powersystems are presented in
Figures 20 and 21.
Data Network Terminal Single-port and Multiport Operating Instructions
Earthing bar
Line
1.0 mm
Power cable
2
Figure 22.Grounding principle of the remote-powered system
Note
If the remote power feed is connected in a wrong way, that is, if the pairs are
cross-connected at the DNT end, the receiving remote unit still functions
properly. However, in this situation data transfer is not possible. See Figure 23.
Data Network Terminal Single-port and Multiport Operating Instructions
5.9Completing the installation
5.9.1Verifying the installation
To verify that you have installed DNT2Mi correctly:
1.Switch the power to DNT2Mi with the power switch on the rear panel.
2.Check that the green LED (PWR) lights up on the front panel.
Caution
Do not cover DNT2Mi. The air inlets and outlets must be unobstructed to
maintain proper circulation of air.
5.9.2Adjusting the LCD display
The LCD adjustment (see Figure 25) may be necessary if the viewing angle
differs from the normal table-top viewing angle, which is the case, for example in
a wall mounting. Adjust the contrast with a small crosshead screwdriver.
STATUS
PWR TESTP1P2
Figure 25.Adjusting LCD contrast
P3
DTRDSR
5.9.3Recommended actions after the installation
After the installation, we recommend you to:
LCD-Contrast Adjuster
DCDRTSCTS
18
OK
DNT2M
•Label DNT2Mi unit(s) and cables according to your installation plan to
help future maintenance operations.
•Clean the site after installation. Recycle any applicable material.
This chapter describes the most common items that need to be checked before
DNT2Mi is taken into use.
DNT2Mi is ready to operate after the power supply (AC, DC, or remote power)
and port and line cables are connected. However, identifications and settings
should be checked and, if required, statistics and error counter should be reset.
DNT2Mi can be configured, tested, and controlled via:
•Front panel LCD and keys
Commissioning DNT2Mi
•Service Terminal (using Q1)
•Macro Service Terminal Emulator running on a PC (using Q1).
Other Nokia management products, such as Nokia NMS, can be used for the same
purpose.
Menu structure for the front panel menus is shown in Chapter 8. Menu structure
for Q1 management is shown in Chapter 9.
The tables in Appendix A can be used to mark down information gathered during
the commissioning procedure.
Note
It can take up to 60 seconds to save the altered settings. If the power is switched
off during this time, the new settings will be lost. During the saving process, you
can use the equipment normally.
6.1Automatic power-up test
When the power is switched on, the unit performs an automatic self test, which is
used to check the most vital operational functions of the equipment.
During the power-up test, the Status LED and the Test LED are lit.
After the automatic power-up test, the display indicates possible errors found
during the test. More detailed information on the fault can then be found in the
Self test menu.
The test ends automatically if no fatal errors were found.
6.2Management
DNT2Mi canbe managed through the lineconnection, local management, or port
connection.
The following items need to be checked:
Q1 transmission speed (Q1: 6,1,1)
The Q1 transmission speed needs to be set to match the system management
speed.
Data Network Terminal Single-port and Multiport Operating Instructions
Q1 address information (Q1: 6,1,2)
The equipment needs a Q1 address to be visible in the NMS systems. You must
give a unique address to each equipment.
You can also enter a name for the equipment by using the command 4,7,2,1.
Q1 management path (Q1: 6,1,3)
The routing of the management must be defined to correspond with the system.
Note
The address setting has the following restrictions:
•The address 4095 must not be given if the equipment is connected to an
NMS bus. This address is a common (broadcast) address.
•The address 4094 is reservedfor PC-TMC/STEuse (generaladdress for the
PC interface unit).
•The address 0 is reserved for PC-TMC/STE use (default address for the PC
interface unit).
Before connecting DNT2Mi to a network, you need to know how the network is
timed.
DNT2Mi can receive timing information through the line and port interfaces.
DNT2Mi can also be used as a network timing source using the unit’s internal
timing circuits.
More information can be found in Sections 9.3.3 and 9.3.5.
6.4Line settings
You have to check the following items:
Line interface (Q1: 6,3,3)
Commissioning DNT2Mi
The line interface settings determine line SHDSL mode, connection speed, and
use of wires.
Typically, DNT2Mi is configured as STU-R, Rate Adaptive. The Rate Adaptive
mode automatically adapts the requested fixed line rate to STU-C.
Power backoff (Q1: 6,3,6)
Select this option to enable or disable transmit power reduction on short loops.
Line alarms (Q1: 6,3,8 and 6,3,9)
The BER alarm limit and alarm severity have to be checked.
6.5Port settings
Adapter unit types are automatically recognised by DNT2Mi and can be seen
from the Identifications menu, for instance.
Data Network Terminal Single-port and Multiport Operating Instructions
Port settings (Q1: 6,4, port#,3)
Different adapters include different configurable parameters. Check that port
settings are compatible with the equipment they are connected to.
Note
There are some adapter settings that are done by changing the jumper settings on
the actual adapter. For more information, refer to document DTE Interface Unitsfor Nokia Data Network Terminals Operating Instructions.
Port alarms (Q1: 6,4, port#,5)
Check that the Q1 alarm visibility is set correctly, that is, enabled or disabled. If
Q1 alarms are disabled, port alarms are not visible in the NMS system.
Also, the BER alarm limit and the alarm severity need to be checked.
6.6Time slot settings (Q1: 6,5)
DNT2Mi canmap a certain amount of time slotsfrom the line connection directly
to a port. Check and configure the time slot allocations, if necessary.
Note
Pay close attention to the mapping of time slot 0. For example, time slot 0 cannot
be mapped with G.704 adapters.
6.7Protection settings
Password (Q1: 10,1 and 10,4)
DNT2Mi settings can be protected with a password.
Front panel key rights (Q1: 10,5)
The front panel keys can be used to configure the equipment and to launch tests
(Test activation). Both functions can be either enabled or disabled.
*) = Recalling the default values does not change the values set for the Q1
management parameters. The original values for these parameters can be recalled by
recalling the factory settings, refer to Section 6.10.
Table 6.Line parameters
Line interfaceSTU-R rate adaptive, 2-wire
Power backoffON
Bit error alarm limit
10
-6
Table 7.Multiplexer parameters
Use of time slotsNo time slots connected
Table 8.Port parameters, V-series (V.11, V.28, V.35 or EIA-530-A)
Port raten x 64k (n=1)
Use of V.110 rate adaptation in
port 2 or 3
In port 2 or 39600 kbit/s, Synchronous
Remote loop detectionAllowed
Externally caused alarmsDisabled (not to be seen through Q1).
Rx timing (CT103)DCE source (CT114)
Not in use
However, even if these alarms are disabled, they
cause front panel alarms.
Recalling the default values does not affect the following settings that are
considered as factory settings. When the factory settings are recalled, the values
in this section and in Section 6.9 become effective.
Commissioning DNT2Mi
Note
Recalling of factory settings can take up to 60 seconds.
This chapter describes what general information and statistics you can get on the
equipment to be monitored. It also deals with possible alarms and faults.
You can accessall this information using front panel or Q1 menus. The menusare
described in detail in Chapters 8 and 9.
7.1Getting general information
Maintaining DNT2Mi
The front panel menu Monitor Info or the Identifications menu, branch 4 on the
Q1 main menu,gives the name and type of theunit to be monitored, the codes and
versions of HW units and programs to be used.
Identifications
Equipment name:
DNT2Mi
Equipment type:
DNT2Mi mp (T65680)
HW:
MainE65671.01 A
MuxE65633.01 A
SW:
S65672.01 A0
Port 1:
V.35 (DS 62604)
Port 2:
X.21 (DS 62605)
Port 3:
V.11 (DS 62603)
Figure 26.Example of general information
In this menu, only the name of the supervised unit is changeable. To change the
name, select Modify (Q1 menu option 4,7,2,1). Note that the maximum length of
the name is 15 characters.
Data Network Terminal Single-port and Multiport Operating Instructions
7.2Monitoring alarms
The Fault display (see Figure 27) gives error information concerning the unit
chosen. The information includes the name, which the user has given to the
supervised device, supervision block, that is, the type of the device to be
monitored, the type of a fault, and the fault status shown by the alarm class (A =
urgent, B = non-urgent, AS = urgent, service alarm).
*DNT2Mi (AS)
Line:
-no incoming signal
Figure 27.Example of Fault display
In the example above, the first line consists of the name given to the supervised
device and alarm class (AS), the second line shows the supervision block, andthe
third the type of the fault.
Table 13 shows alarm information from port and line interfaces and alarms from
the equipment itself.
Figure 33.Remotely controlled network test loop with PRBS test pattern
7.4Checking measurements and statistics
Measurements and statistics to be checkedthrough the front panel control and Q1
measurements cover various quality parameters, line and error counters.
The parameters that can be viewed through the front panel menus or the Q1
menus Measurement (main menu branch 7 and Statistics (main menu branch 8)
are listed below.
Data Network Terminal Single-port and Multiport Operating Instructions
•Line attenuation
•Line voltage (remote-powered)
Attenuation can be 0 to 41 dB.
DNT statistics via the front panel or Q1
Signal qualities of the selected 15-minute periods (4 periods with front panel
menus and 100 with Q1) and 24-hour periods (4 periods with front panel menus
and 30 with Q1) and since the last reset, according to Rec. G.826, are indicated
by the quality parameters in Table 15.
Table 15.Statistics values via Q1
InformationAbbreviation and/or
Description
ratio
Total timeTTTime passed since the last reset.
Unavailability timeUAT
(Rx, Tx)
Errored secondsES
(Rx, Tx)
Severely errored secondsSES
(Rx, Tx)
Background block errorsBBE
(Rx)
Unavailability time ratioUATR
(Rx, Tx)
Errored seconds ratioESR
(Rx, Tx)
Severely errored seconds
ratio
SESR
(Rx, Tx)
Time during which severely errored seconds have
occurred.
Number of errored seconds.
Number of seconds during which ≥ 30% blocks
are errored.
Number of errored blocks except blocks during
severely errored seconds and unavailable time.
The block size depends on the used line rate.
Ratio of unavailability time to the total time during
the last 15 minutes or 24 hours.
Ratio of errored seconds to the total of seconds in
the available time during the last 15 minutes or 24
hours.
Ratio of severely errored seconds to the total of
seconds in the available time during the last 15
minutes or 24 hours.
Background block error
ratio
BBER
(Rx)
Ratio of background block errors to the total of
blocks during the last 15 minutes or 24 hours,
except blocks during severely errored blocks and
unavailable time.
System counters via Q1
•Number of CPU resets and the time passed since the last reset.
Shows the status information, test
results, configuration options, and
monitoring information.
Figure 35.Front panel actions
The menu structure is presented in full detail on the following sections.
The
key takes you one
OK
level down in the menu. It also
selects or activates a desired
test, monitoring, or
EXITOK
configuration alternative.
EXIT
The
key takes you one
step up in the menu without
activating or storing anything.
The arrow keys < > are used
for scrolling the alternatives
on a menu level.
If L2: 1024 is shown on the left side of the display, it indicates that the lines are
cross-connected. This can occur in the STU-R, 4-wire mode only and does not
affect data flow.
Data Network Terminal Single-port and Multiport Operating Instructions
8.1Main menu levels
DNT2Mi
Status: OK
OK
EX
Main Menu Level
Monitor
OK
EX
Monitor
Port 1
Monitor
Port 2
Monitor
Port 3
Monitor
Line
Monitor
Alarms
Monitor
Info
Monitor
Self test results
Main Menu Level
Configure
OK
EX
Configure
Port 1
Configure
Port 2
Configure
Port 3
Configure
Line
Configure
Common
Configure
Default
Main Menu Level
Test
OK
EX
Test
Port 1
Test
Port 2
Test
Port 3
Test
Line
Test
Equipment
Figure 36.Front panel main menus
8.2Configuring DNT2Mi
When configuring DNT2Mi, take the following into account: at entering a menu
level where you can change unit's configuration parameters, a configuration
option on the bottom row starts to blink indicating that you are allowed to change
it.
Note that the menu has an individual configuration parameter set for each port
type.
The modem automatically detects the port adapter type in use and shows the
corresponding configuration parameters under the Configure: Port menu option.
Note
The text Save? (OK/Exit) appears in the display only when changes have been
made to the edit buffer. If the OK key is pressed, the changes are stored and
activated. Pressing the EXIT key ends the configuration procedure and nothing is
changed.
Note
The asterisk(*) indicates whether a parameter value is currently stored in thenonvolatile memory (that is, the parameter value is used also the next time when the
modem is switched on).
Note
If the port adapter is not in place, the menu shows the port parameters that were
used previously or, alternatively, the V-type port parameters.
0 Display
1 Eq type
2 Eq name
5 HW units
6 SW versions
7 Modify
Using Q1 menus
4,0
Identifications
Equipment name:
DNT2Mi
Equipment type:
DNT2Mi mp (T65680)
HW:
Main E65671.01 A
Mux E65633.01 A
SW:
S65672.01 A0
Port 1:
V.11 (DS62603)
Port 2:
No adapter
Port 3:
G.704/2M (DS62608)
Installation Date:
First:2003-03-16
Last:2003-03-27
Installed by:K.Reijonen
Serial number:
4H0122334455H
Data Network Terminal Single-port and Multiport Operating Instructions
9.2DNT controls (5)
The DNT controls menu (see Figure 58) contains all possible tests to be activated
in DNT2Mi via the Q1 management.
It also shows if DNT2Mi in question is being tested. See the example below.
Display controls:
Port1: ---Port2: ---Port3: ---Line:G.704--
The DNT Controls menu also has a Self Test submenu, which shows the result
of the last self test and enables the activation of a self test. The activation of this
test cuts off the connection between the network manager and the unit. The result
of the self test can be read after the unit has performed the whole test. The test
takes about 20 seconds.
typecontrol
Caution
The activation of a self test also cuts the data connection.
9.3DNT settings (6)
9.3.1Display (6,0)
The first display of the DNT Settings menu (see Figure 59) shows part of the
current settings. The display can look, for example like this:
DNT settings:
Q1 speed:4800
Q1 address:2
Q1 via line:Off
LM interface:On
Test timeout limit:10
Timing source:Line
Line interface:
STU-R rate adaptive
2-wire
PSD symmetric
Line rate n=32 (2048k)
Power backoff:On
BER alarm limit:1E-3
BER alarm severity:B-level
Port 1 (V.35) rate:Line rate n=32 (2048k)
Port 2 (--) rate:1*64 kbit/s
Port 3 (--) rate:1*64 kbit/s
Timeslot usage:
TS:Port:TS:Port:
00P101P1
02P103P1
04P105P1
06P107P1
08P109P1
10P111P1
12P113P1
14P115P1
16P117P1
18P119P1
20P121P1
22P123P1
24P125P1
26P127P1
28P129P1
30P131P1
Using Q1 menus
9.3.2Service options (6,1)
The Service options menu provides also the network manager with three Q1specific configurable service options, that is, speed used on the management
connection, Q1 address, and management path. All these options can be checked
and changed.
Q1 speed (6,1,1)
The speed must be selected according to the speed used in the management
network.
The Q1 address must be selected before DNT2Mi can be accessed using
management.
The address can range from 0000 to 4095. The last address (4095) is a universal
address that cannot be selected by the Q1 manager.
Q1 management path (6,1,3)
A Q1 management source is selected from this menu. The source can either be:
•Q1 via line, EOC
•Local management interface
•Q1 via Port1 (only with G.704 adapter).
9.3.3Timing source (6,2)
Data Network Terminal Single-port and Multiport Operating Instructions
This menu allows you to select a source for timing. The timing alternatives are:
•Internal
•Line
•Port1
•Transparent.
Figure 73 illustrates the principle of each alternative.
The timing of circuit 103 can be set either by the clock from DTE (113) or by the
clock of the equipment (114). See Figures 78 and 79 in Section 9.3.5.