This manual contains information that is proprietary to RAD Data Communications Ltd. ("RAD"). No
part of this publication may be reproduced in any form whatsoever without prior written approval by
RAD Data Communications.
Right, title and interest, all information, copyrights, patents, know-how, trade secrets and other
intellectual property or other proprietary rights relating to this manual and to the ASMi-52 and any
software components contained therein are proprietary products of RAD protected under international
copyright law and shall be and remain solely with RAD.
ASMi-52 is a registered trademark of RAD. No right, license, or interest to such trademark is granted
hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect
to such trademark.
You shall not copy, reverse compile or reverse assemble all or any portion of the Manual or the
ASMi-52. You are prohibited from, and shall not, directly or indirectly, develop, market, distribute,
license, or sell any product that supports substantially similar functionality as the ASMi-52, based on or
derived in any way from the ASMi-52. Your undertaking in this paragraph shall survive the termination
of this Agreement.
This Agreement is effective upon your opening of the ASMi-52 package and shall continue until
terminated. RAD may terminate this Agreement upon the breach by you of any term hereof. Upon
such termination by RAD, you agree to return to RAD the ASMi-52 and all copies and portions thereof.
For further information contact RAD at the address below or contact your local distributor.
International Headquarters
RAD Data Communications Ltd.
24 Raoul Wallenberg St.
Tel Aviv 69719 Israel
Tel: 972-3-6458181
Fax: 972-3-6498250
E-mail: market@rad.com
RAD warrants to DISTRIBUTOR that the hardware in the ASMi-52 to be delivered hereunder shall be
free of defects in material and workmanship under normal use and service for a period of twelve (12)
months following the date of shipment to DISTRIBUTOR.
If, during the warranty period, any component part of the equipment becomes defective by reason of
material or workmanship, and DISTRIBUTOR immediately notifies RAD of such defect, RAD shall have
the option to choose the appropriate corrective action: a) supply a replacement part, or b) request
return of equipment to its plant for repair, or c) perform necessary repair at the equipment's location.
In the event that RAD requests the return of equipment, each party shall pay one-way shipping costs.
RAD shall be released from all obligations under its warranty in the event that the equipment has been
subjected to misuse, neglect, accident, or improper installation, or if repairs or modifications were
made by persons other than RAD's own authorized service personnel, unless such repairs by others
were made with the written consent of RAD.
The above warranty is in lieu of all other warranties, expressed or implied. There are no warranties
which extend beyond the face hereof, including, but not limited to, warranties of merchantability and
fitness for a particular purpose, and in no event shall RAD be liable for consequential damages.
RAD shall not be liable to any person for any special or indirect damages, including, but not limited to,
lost profits from any cause whatsoever arising from or in any way connected with the manufacture,
sale, handling, repair, maintenance or use of the ASMi-52, and in no event shall RAD's liability exceed
the purchase price of the ASMi-52.
DISTRIBUTOR shall be responsible to its customers for any and all warranties which it makes relating
to ASMi-52 and for ensuring that replacements and other adjustments required in connection with the
said warranties are satisfactory.
Software components in the ASMi-52 are provided "as is" and without warranty of any kind. RAD
disclaims all warranties including the implied warranties of merchantability and fitness for a particular
purpose. RAD shall not be liable for any loss of use, interruption of business or indirect, special,
incidental or consequential damages of any kind. In spite of the above RAD shall do its best to provide
error-free software products and shall offer free Software updates during the warranty period under
this Agreement.
RAD's cumulative liability to you or any other party for any loss or damages resulting from any claims,
demands, or actions arising out of or relating to this Agreement and the ASMi-52 shall not exceed the
sum paid to RAD for the purchase of the ASMi-52. In no event shall RAD be liable for any indirect,
incidental, consequential, special, or exemplary damages or lost profits, even if RAD has been advised of
the possibility of such damages.
This Agreement shall be construed and governed in accordance with the laws of the State of Israel.
General Safety Instructions
The following instructions serve as a general guide for the safe installation and operation of
telecommunications products. Additional instructions, if applicable, are included inside the manual.
Safety Symbols
This symbol may appear on the equipment or in the text. It indicates
potential safety hazards regarding product operation or maintenance to
operator or service personnel.
Warning
Danger of electric shock! Avoid any contact with the marked surface while
the product is energized or connected to outdoor telecommunication lines.
.
Warning
Protective earth: the marked lug or terminal should be connected to the building
protective earth bus.
Some products may be equipped with a laser diode. In such cases, a label
with the laser class and other warnings as applicable will be attached near
the optical transmitter. The laser warning symbol may be also attached.
Please observe the following precautions:
• Before turning on the equipment, make sure that the fiber optic cable is
intact and is connected to the transmitter.
• Do not attempt to adjust the laser drive current.
• Do not use broken or unterminated fiber-optic cables/connectors or look
straight at the laser beam.
• The use of optical devices with the equipment will increase eye hazard.
• Use of controls, adjustments or performing procedures other than those
specified herein, may result in hazardous radiation exposure.
ATTENTION: The laser beam may be invisible!
In some cases, the users may insert their own SFP laser transceivers into the product. Users are alerted
that RAD cannot be held responsible for any damage that may result if non-compliant transceivers are
used. In particular, users are warned to use only agency approved products that comply with the local
laser safety regulations for Class 1 laser products.
Always observe standard safety precautions during installation, operation and maintenance of this
product. Only qualified and authorized service personnel should carry out adjustment, maintenance or
repairs to this product. No installation, adjustment, maintenance or repairs should be performed by
either the operator or the user.
Handling Energized Products
General Safety Practices
Do not touch or tamper with the power supply when the power cord is connected. Line voltages may be
present inside certain products even when the power switch (if installed) is in the OFF position or a fuse is
blown. For DC-powered products, although the voltages levels are usually not hazardous, energy hazards
may still exist.
Before working on equipment connected to power lines or telecommunication lines, remove jewelry or any
other metallic object that may come into contact with energized parts.
Unless otherwise specified, all products are intended to be grounded during normal use. Grounding is
provided by connecting the mains plug to a wall socket with a protective earth terminal. If an earth lug is
provided on the product, it should be connected to the protective earth at all times, by a wire with a
diameter of 18 AWG or wider. Rack-mounted equipment should be mounted only in earthed racks and
cabinets.
Always make the ground connection first and disconnect it last. Do not connect telecommunication cables
to ungrounded equipment. Make sure that all other cables are disconnected before disconnecting the
ground.
Connection of AC Mains
Make sure that the electrical installation complies with local codes.
Always connect the AC plug to a wall socket with a protective ground.
The maximum permissible current capability of the branch distribution circuit that supplies power to the
product is 16A. The circuit breaker in the building installation should have high breaking capacity and must
operate at short-circuit current exceeding 35A.
Always connect the power cord first to the equipment and then to the wall socket. If a power switch is
provided in the equipment, set it to the OFF position. If the power cord cannot be readily disconnected in
case of emergency, make sure that a readily accessible circuit breaker or emergency switch is installed in the
building installation.
In cases when the power distribution system is IT type, the switch must disconnect both poles
simultaneously.
Connection of DC Mains
Unless otherwise specified in the manual, the DC input to the equipment is floating in reference to the ground.
Any single pole can be externally grounded.
Due to the high current capability of DC mains systems, care should be taken when connecting the DC supply
to avoid short-circuits and fire hazards.
DC units should be installed in a restricted access area, i.e. an area where access is authorized only to
qualified service and maintenance personnel.
Make sure that the DC supply is electrically isolated from any AC source and that the installation complies
with the local codes.
The maximum permissible current capability of the branch distribution circuit that supplies power to the
product is 16A. The circuit breaker in the building installation should have high breaking capacity and must
operate at short-circuit current exceeding 35A.
Before connecting the DC supply wires, ensure that power is removed from the DC circuit. Locate the
circuit breaker of the panel board that services the equipment and switch it to the OFF position. When
connecting the DC supply wires, first connect the ground wire to the corresponding terminal, then the
positive pole and last the negative pole. Switch the circuit breaker back to the ON position.
A readily accessible disconnect device that is suitably rated and approved should be incorporated in the
building installation.
If the DC mains are floating, the switch must disconnect both poles simultaneously.
Connection of Data and Telecommunications Cables
Data and telecommunication interfaces are classified according to their safety status.
The following table lists the status of several standard interfaces. If the status of a given port differs from
the standard one, a notice will be given in the manual.
Ports which do not present a safety hazard. Usually
up to 30 VAC or 60 VDC.
TNV-1 Telecommunication Network Voltage-1:
Ports whose normal operating voltage is within the
limits of SELV, on which overvoltages from
telecommunications networks are possible.
Ports whose normal operating voltage exceeds the
limits of SELV (usually up to 120 VDC or telephone
ringing voltages), on which overvoltages from
telecommunication networks are not possible. These
ports are not permitted to be directly connected to
external telephone and data lines.
TNV-3 Telecommunication Network Voltage-3:
Ports whose normal operating voltage exceeds the
limits of SELV (usually up to 120 VDC or telephone
ringing voltages), on which overvoltages from
telecommunication networks are possible.
Always connect a given port to a port of the same safety status. If in doubt, seek the assistance of a
qualified safety engineer.
Always make sure that the equipment is grounded before connecting telecommunication cables. Do
not disconnect the ground connection before disconnecting all telecommunications cables.
Some SELV and non-SELV circuits use the same connectors. Use caution when connecting cables.
Extra caution should be exercised during thunderstorms.
When using shielded or coaxial cables, verify that there is a good ground connection at both ends. The
earthing and bonding of the ground connections should comply with the local codes.
The telecommunication wiring in the building may be damaged or present a fire hazard in case of
contact between exposed external wires and the AC power lines. In order to reduce the risk, there are
restrictions on the diameter of wires in the telecom cables, between the equipment and the mating
connectors.
A
n
Caution
To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cords.
ttentio
Pour réduire les risques s’incendie, utiliser seulement des conducteurs de
télécommunications 26 AWG ou de section supérieure.
Some ports are suitable for connection to intra-building or non-exposed wiring or cabling only. In such
cases, a notice will be given in the installation instructions.
Do not attempt to tamper with any carrier-provided equipment or connection hardware.
Electromagnetic Compatibility (EMC)
The equipment is designed and approved to comply with the electromagnetic regulations of major
regulatory bodies. The following instructions may enhance the performance of the equipment and will
provide better protection against excessive emission and better immunity against disturbances.
A good earth connection is essential. When installing the equipment in a rack, make sure to remove all
traces of paint from the mounting points. Use suitable lock-washers and torque. If an external
grounding lug is provided, connect it to the earth bus using braided wire as short as possible.
The equipment is designed to comply with EMC requirements when connecting it with unshielded
twisted pair (UTP) cables. However, the use of shielded wires is always recommended, especially for
high-rate data. In some cases, when unshielded wires are used, ferrite cores should be installed on
certain cables. In such cases, special instructions are provided in the manual.
Disconnect all wires which are not in permanent use, such as cables used for one-time configuration.
The compliance of the equipment with the regulations for conducted emission on the data lines is
dependent on the cable quality. The emission is tested for UTP with 80 dB longitudinal conversion loss
(LCL).
Unless otherwise specified or described in the manual, TNV-1 and TNV-3 ports provide secondary
protection against surges on the data lines. Primary protectors should be provided in the building
installation.
The equipment is designed to provide adequate protection against electro-static discharge (ESD).
However, it is good working practice to use caution when connecting cables terminated with plastic
connectors (without a grounded metal hood, such as flat cables) to sensitive data lines. Before
connecting such cables, discharge yourself by touching earth ground or wear an ESD preventive wrist
strap.
FCC-15 User Information
This equipment has been tested and found to comply with the limits of the Class A digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the Installation and Operation manual, may cause harmful interference to the radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
A
A
Canadian Emission Requirements
This Class A digital apparatus meets all the requirements of the Canadian Interference-Causing
Equipment Regulation.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
Warning per EN 55022 (CISPR-22)
Warning
vertissement
chtung
This is a class A product. In a domestic environment, this product may cause
radio interference, in which case the user will be required to take adequate
measures.
Cet appareil est un appareil de Classe A. Dans un environnement résidentiel, cet
appareil peut provoquer des brouillages radioélectriques. Dans ces cas, il peut
être demandé à l’utilisateur de prendre les mesures appropriées.
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können
bei Betrieb dieses Gerätes Rundfunkströrungen auftreten, in welchen Fällen der
Benutzer für entsprechende Gegenmaßnahmen verantwortlich ist.
Declaration of Conformity
Manufacturer's Name: RAD Data Communications Ltd.
Manufacturer's Address: 24 Raoul Wallenberg St.
Tel Aviv 69719
Israel
declares that the product:
Product Name: ASMi-52
Conforms to the following standard(s) or other normative document(s):
EMC: EN 55022: 1994 Limits and methods of measurement of radio disturbance
characteristics of information technology equipment.
EN 55024: 1998 Information technology equipment – Immunity characteristics
– Limits and methods of measurement.
Safety: EN 60950: 2000 Safety of information technology equipment.
Supplementary Information:
The product herewith complies with the requirements of the EMC Directive 89/336/EEC, the Low
Voltage Directive 73/23/EEC and the R&TTE Directive 99/5/EC. The product was tested in a typical
configuration.
Tel Aviv, 30th June, 2002
Haim Karshen
VP Quality
European Contact: RAD Data Communications GmbH, Otto-Hahn-Str. 28-30,
85521 Ottobrunn-Riemerling, Germany
Quick Start Guide
Installation of ASMi-52 should be carried out only by an experienced technician. If
you are familiar with ASMi-52, use this guide to prepare the units for operation.
1. Installing ASMi-52
Connecting the Interfaces
1. Connect the line to the RJ-45 rear panel connector dedicated SHDSL.
2. Connect the DTE to the appropriate rear panel connector.
3. Connect the control terminal to the rear panel CONTROL connector.
Connecting the Power
• Connect the AC or DC power to the ASMi-52 modem.
The unit has no power switch. Operation starts when power is connected
to the rear panel power connector.
2. Configuring ASMi-52
Configure ASMi-52 to the required operation mode via an ASCII terminal
connected to the rear panel CONTROL port directly or via a modem link.
Connecting the Terminal
To connect the terminal:
1. Connect the terminal cable to the CONTROL connector of ASMi-52.
2. Turn the control terminal on.
3. Configure the terminal to the default communication parameters: 9.6 kbps,
one start bit, eight data bits, no parity, one stop bit.
4. Select the full-duplex mode.
5. Turn the terminal echo off.
6. Disable any type of flow control.
You are now ready to start a control session.
ASMi-52 Ver. 2.5 Configuring ASMi-52 1
Quick Start Guide Installation and Operation Manual
Configuring the Master Clock
To configure the master clock:
• From the System Configuration menu (Main Menu > Configuration > System
Configuration > Master Clock), configure the central ASMi-52 clock to
external or internal and remote ASMi-52 clock to the receive clock.
Configuring the SHDSL Interface
To configure the SHDSL interface:
• From the SHDSL Configuration menu (Main Menu > Configuration > Port
Configuration > SHDSL Configuration), configure the following SHDSL
parameters:
SHDSL compatibility
Power backoff
Snext margin, if line probing is set to adaptive
Current margin, if line probing is set to adaptive
Power spectral density (for ASMi-52 with 2-wire line interface and line
probing set to fixed)
Line probing
Line type (for 4-wire ASMi-52 units only)
Loop attenuation threshold
SNR margin threshold.
Configuring the DTE Interface
ASMi-52 includes a serial, E1, T1, or 10/100BaseT DTE interface configured as a
single interface. ASMi-52 can be multiplexed as i.e., E1 + Serial DTE interface, or
E1 + 10/100BaseT DTE interface, or Serial + 10/100BaseT DTE interface, in
which case each pair of interface has to be configured separately.
Configuring the Serial Interface
To configure the serial interface:
• From the DTE Port Configuration (Main Menu > Configuration > Port
Configuration > DTE Configuration), select the required data rate.
Configuring the E1 Interface
When configuring an E1 interface, you have to select the modem’s framing mode
and assign each E1 timeslot to carry data or idle code.
If in your application, an ASMi-52 unit with an E1 interface operates opposite
another ASMi-52 unit, the E1 settings of the remote device are automatically
matched to those of the local modem (the Units Identical Setting value is set to YES
by default). The Units Identical Setting value of the local modem overrides the
management commands of the remote supervisory terminal.
2 Configuring ASMi-52 ASMi-52 Ver. 2.5
Installation and Operation Manual Quick Start Guide
To configure E1 parameters:
• From the E1 Port Configuration menu (Main Menu > Configuration > Port
Configuration > E1 Port Configuration), configure the following E1
parameters:
Framing mode
Timeslot assignment
Note
• You can configure timeslot 0 to be looped or transparent:
Looped – timeslot 0 is sent back to the E1 interface, when operating
opposite remote units with a serial data interface.
Transparent – timeslot 0 is transmitted to the remote modem.
• If you operate ASMi-52 with the G732S framing, timeslot 0 is always
transparent and timeslot 16 is always connected.
• When operating a 2-wire ASMi-52 with E1 interface opposite ASMi-52 with
V.35 interface (not in LS mode), assign at least three timeslots, excluding
timeslot 0, to carry data.
• When operating a 4-wire ASMi-52 with E1 interface opposite ASMi-52 with
V.35 interface (not in LS mode), assign at least six timeslots, excluding timeslot
0, to carry data.
Configuring the T1 Interface
To configure the T1 parameters:
• From the T1 Port Configuration menu (Main Menu > Configuration > Port
Configuration > T1 Port Configuration), configure the following T1 parameters:
Framing mode
Line coding
Receive gain
Interface type
Transmit signal mask
Timeslot assignment
Configuring the 10/100BaseT Interface
To configure 10/100BaseT parameters:
• From the LAN Configuration menu (Main Menu > Configuration > System
Configuration > LAN Configuration), configure the following LAN parameters:
Bridge static table
Aging timeout
LAN rate
ASMi-52 Ver. 2.5 Configuring ASMi-52 3
Quick Start Guide Installation and Operation Manual
ASMi-52 is an SHDSL modem that operates in full-duplex over 2/4-wire lines and
offers a cost-effective solution for delivering digital data to customer premises over
existing copper cables. ASMi-52 handles multiple data rates in the range of
64–4608 kbps. The unit is available with a single data port or as a multiplexer with
two data ports. The modem supports X.21, V.35, RS-530, E1 and T1 interfaces. In
addition, ASMi-52 may contain an Ethernet/Fast Ethernet bridge with VLAN
support (via management LAN port), or an IP router (IR-IP).
ASMi-52 uses TC-PAM coding and complies with the ITU-T G.991.2 requirements,
see page 1-7.
Certain multiplexer application combinations are possible. See Table 1-4 for the
multiplexer applications.
Versions
DTE Interface
ASMi-52 supports the following DTE interfaces:
• X.21
• V.35
• RS-530
• E1, as per G.704
• T1
• Ethernet/Fast Ethernet bridge with VLAN support (combined with management
LAN port)
• IR-IP (IP router).
The following combinations of interfaces can be multiplexed:
• V.35 + LAN
• E1 + LAN
• E1 + serial port (V.35, X.21, RS-530)
Line Interface
• ASMi-52 for operation over a 2-wire line
• ASMi-52 for operation over a 4-wire line.
ASMi-52 Ver. 2.5 Overview 1-1
Chapter 1 Introduction Installation and Operation Manual
Unit Enclosure
ASMi-52 is available in a plastic, metal, or rail-mount enclosure.
Applications
Figure 1-1 illustrates a typical ASMi-52 application, in which standalone modems
operate opposite each other. Figure 1-2 shows ASMi-52 units operating opposite a
centrally located DXC rack. Figure 1-3 shows ASMi-52 modems operating opposite
a centrally located LRS-24 rack.
The following multiplexer applications are supported:
• A multiplexer unit opposite the same type of multiplexer unit
• A DXC opposite multiplexer units (the multiplexer unit is a CPE), where the
DXC supports a multiplexer (the CPE is the receive clock source)
• A multiplexer unit configured as a single unit opposite a single unit (where a
multiplexer unit is configured as a single unit)
• A multiplexer unit opposite an E1 unit, where the single or multiplexer unit is
configured as an E1 single unit.
Figure 1-1. Standalone Modem Application
1-2 OverviewASMi-52 Ver. 2.5
Installation and Operation Manual Chapter 1 Introduction
Figure 1-2. ASMi-52 Modems Operating Opposite a Centrally Located LRS-24 Rack
Chapter 1 Introduction Installation and Operation Manual
Features
Functionality
ASMi-52 can be configured to operate in a CO (central office) or CPE (customer
premises equipment) mode.
Line Interface
ASMi-52 extends the range of data transmission over 2/4-wire lines up to 7.0 km
(4.3 miles), by employing SHDSL TC-PAM technology. ASMi-52 operation
complies with the requirements of the ITU-T G.991.2 standard. In addition, 4-wire
ASMi-52 units can be configured to operate over 2-wire lines.
The typical ranges are based on error-free lab tests without noise.
ASMi-52CD/4W operates at data rates up to 4608 kbps, depending on internal or
external clock.
1-4 OverviewASMi-52 Ver. 2.5
Installation and Operation Manual Chapter 1 Introduction
DTE Interface
ASMi-52 supports the following DTE interfaces:
• X.21
• V.35
• RS-530
• E1, as per G.704
• T1
• Ethernet/Fast Ethernet bridge with VLAN support (combined with management
LAN port)
• IR-IP (IP router).
When ASMi-52 is ordered only with the 10/100BaseT port, it can be used to
transfer user and management data.
Note
An unbalanced E1 interface is provided via an adapter cable (CBL-RJ-45/2BNC/E1).
Ω
The impedance conversion (120
when the adapter cable connection is detected.
to 75Ω) is performed by ASMi-52 automatically
ASMi-52 supports multiple data rates between the range of 64 kbps and
4608 kbps. The data rate depends on the following factors:
• Unit rate mode (regular or low speed)
• Line interface type (2-wire or 4-wire)
• DTE interface type of the local and remote units (serial or E1/T1)
• Clock mode (internal or external)
• Single or multiplexed.
Table 1-2 and Table 1-3 detail the ASMi-52 data rates with the possible
combinations of rate mode types, line/DTE interface types, and clock modes.
ASMi-52 Ver. 2.5 Overview 1-5
Chapter 1 Introduction Installation and Operation Manual
n × 64 kbps (n = 1, 2, …, 36) n × 128 kbps (n = 1, 2, …, 36)
external clock
Serial DTE interface E1 DTE interface
E1 DTE interface Serial DTE interface
E1 DTE interface E1 DTE interface
T1 DTE interface T1 DTE interface
Multiplexer Serial/E1 DTE
n × 64 kbps (n = 3, 4, …, 32) n × 128 kbps (n = 3, 4, …, 16)
n × 64 kbps (n = 3, 4, …, 32) n × 128 kbps (n = 3, 4, …, 16)
n × 64 kbps (n = 1, 2, …, 32) n × 64 kbps (n = 1, 2, …, 32)
n × 64 kbps (n = 1, 2, …, 24) n × 64 kbps (n = 1, 2, …, 24)
n × 64 kbps (n = 1, 2, …, 32) n × 64 kbps (n = 1, 2, …, 32)
(any) interface
Table 1-3. ASMi-52 Data Rates (Low Speed Mode)
Unit and DTE Interface Type Line Interface
Local Unit Remote Unit 2-wire 4-wire
n × 64 kbps (n = 1, 2, …, 32) n × 64 kbps (n = 1, 2, …, 32)
n × 64 kbps (n = 3, 4, …, 32) n × 128 kbps (n = 3, 4, …, 16)
ASMi-52 in low
speed mode
ASMi-52 in low
speed mode
ASMi-52 with serial
DTE interface
Note
ASMi-52 with E1
n × 64 kbps (n = 1, 2, …, 32) n × 64 kbps (n = 1, 2, …, 32)
DTE interface
The data rates for a multiplexer modem in Table 1-2 include the entire data rates
sum for all the interfaces.
1-6 OverviewASMi-52 Ver. 2.5
Installation and Operation Manual Chapter 1 Introduction
Multiplexer Applications
Notes
Note
• The multiplexer unit cannot be configured as a device with LAN only port. It
must have a DTE or IR port.
• The hardware of a single unit-based product with a LAN port manager is
different from that of a multiplexer-based product.
The hardware has different options for the modem to work as a multiplexer.
Table 1-4 shows all the available multiplexer combinations that can be used.
Software for a multiplexer version is available but is not transferable to a single port
unit.
Table 1-4. Possible Multiplexer Applications
CO/CPE E1 Serial DTE LAN
E1
Serial
DTE
LAN
E1↔E1 E1↔Serial DTE E1↔LAN
Serial DTE↔E1
LAN↔E1
Serial DTE↔
Serial DTE
LAN↔Serial
DTE
DTE↔LAN
LAN↔LAN
Serial
E1↔E1 E1↔Serial DTE E1↔LAN
Serial DTE↔E1
Serial DTE
↔Serial DTE
V.35↔LAN E1↔E1
E1+Serial
DTE↔E1
E1+Serial DTE E1+LAN
Serial
DTE+LAN
E1↔E1 E1↔E1 E1↔Serial DTE
E1↔Serial DTE
E1↔E1+Serial
DTE
E1↔E1+LAN
Serial DTE↔E1 Serial DTE↔E1
E1↔Serial
DTE+LAN
Serial DTE↔
Serial DTE
Serial DTE↔
Serial DTE
LAN↔E1 LAN↔E1
LAN
↔Serial
LAN↔Serial
DTE
DTE
E1↔ E1+Serial
DTE
E1↔E1 E1↔Serial DTE
E1↔Serial DTE E1↔E1+LAN
E1↔Serial
DTE+LAN
E1+Serial
DTE
Serial DTE↔E1 Serial DTE↔E1
Serial DTE↔
Serial DTE
Serial DTE↔
Serial DTE
E1+Serial
DTE↔E1
E1+Serial DTE
↔E1+Serial
DTE
E1+Serial
DTE↔E1
ASMi-52 Ver. 2.5 Overview 1-7
Chapter 1 Introduction Installation and Operation Manual
Table 1-4. Possible Multiplexer Applications (Cont.)
CO/CPE E1 Serial DTE LAN
E1↔E1 E1↔Serial DTE E1↔LAN
E1+LAN↔E1 E1↔E1
E1+LAN
E1+LAN↔E1 E1+LAN↔E1
Serial DTE↔E1
Serial DTE↔
Serial DTE
Serial
DTE↔LAN
Serial DTE+
LAN↔E1
Serial
DTE+LAN
E1+Serial DTE E1+LAN
E1↔E1+Serial
DTE
E1↔E1 E1↔Serial DTE
E1↔Serial DTE E1↔E1+LAN
E1+LAN↔
E1+LAN
Serial DTE↔E1
Serial DTE↔E1
Serial DTE↔
Serial DTE
Serial DTE+
LAN↔E1
Serial DTE+
LAN↔E1
Serial
DTE+LAN
E1↔Serial
DTE+LAN
Serial DTE
↔Serial DTE
Serial DTE
+LAN↔Serial
DTE +LAN
DXC
LRS-24
Note
Note
DXC↔E1+
Serial DTE
LRS-24↔
Serial DTE = V.35, X.21, RS-530, IR-IP
E1+Serial DTE
DXC↔E1
+LAN
LRS-24↔
E1+LAN
DXC↔Serial
DTE+LAN
LRS-24↔Serial
DTE+LAN
The following are multiplexer conditions when working with the ASMi-52 unit:
• E1+Serial DTE can work as an ‘E1 port only’.
• E1+LAN can work as an ‘E1 port only’.
• LAN+Serial DTE can work as a ‘Serial DTE port only’.
• E1+Ethernet and Serial DTE+Ethernet can be configured as a single port only
(‘E1 only’ or ‘Serial DTE only’) while the Ethernet port operates as a
management port only.
ASMi-52 E1 or Serial DTE units with a LAN management port previously released
with software versions earlier than version 2.5 cannot operate as a multiplexer unit
(E1+LAN, Serial DTE+LAN) with version 2.5 due to hardware differences.
Timing
ASMi-52 supports three clock modes:
• Internal, derived from its internal oscillator (CO mode)
• External, supplied by the attached DTE
1-8 OverviewASMi-52 Ver. 2.5
Installation and Operation Manual Chapter 1 Introduction
• Receive, recovered from the received line signal (CPE mode).
Management
ASMi-52 supports the following management options:
• ASCII terminal or Easy Config hand-held device via V.24/RS-232 terminal port
• Telnet via a dedicated 10/100BaseT port
• SNMP network management (RADview) via a dedicated 10/100BaseT port
• PC, running a Web browsing application (ConfiguRAD)
• Inband management via a dedicated timeslot (units with E1/T1 interface only).
EOC
ASMi-52 provides an inband management channel (EOC) for end-to-end system
management and supervision. This management channel uses SHDSL overhead
bits and operates without interfering with data transmission.
ConfiguRAD
ConfiguRAD is a user-friendly Web-based terminal management system used for
remote device configuration and maintenance. It is embedded in ASMi-52 and
provided at no extra cost. ConfiguRAD can be run from any standard Web
browser.
Dial-In
The V.24 terminal port supports a dial-up modem connection for remote
management of ASMi-52 over telephone lines.
Dial-Out
The V.24 terminal port supports alarm dial-out.
Diagnostics
ASMi-52 supports activation of the following:
• Local loopback
• Remote loopback
• Remote loopback at the SHDSL repeater (activated from the local unit)
• Internal Bert (multiplexer units only) vs. multiplexer.
All tests can be activated from the local unit or from the remote unit.
ASMi-52 includes an internal Bit Error Rate Tester (BERT) for complete testing of
the local and remote modem and the link quality without any need for an external
test equipment. ASMi-52 runs an internal pseudo-random 511-bit test pattern in
accordance with the ITU V.52 standard.
Real time alarms provide information on the system status, indicating management
failure, synchronization loss and other conditions.
ASMi-52 Ver. 2.5 Overview 1-9
Chapter 1 Introduction Installation and Operation Manual
e
Statistics Collection
ASMi-52 supports SHDSL and E1/T1 statistics collection.
Alarm Reporting
ASMi-52 alarms are relayed via a dedicated 6-pin terminal block connector.
SHDSL Repeaters
Up to eight SHDSL repeaters can be installed in line to increase the operation
range of the modem. ASMi-52 provides basic management of the repeaters.
Not
SHDSL repeaters do not support ASMi-52 T1 products.
1.2 Physical Description
Figure 1-4 shows a 3D view of the ASMi-52 unit in the plastic enclosure.
Figure 1-4. ASMi-52, 3D View
The front panel includes several LEDs, which display the status of power, data flow
and provide diagnostics. For a detailed description of the front panel, see
Chapter 3.
The rear panel includes an AC/DC power connector, a DTE connector, a line
connector, a 10/100BaseT port, a V.24 terminal connector, and an alarm relay
port. The ASMi-52 rear panel is described in greater detail in Chapter 2.
1.3 Functional Description
This section provides a functional description of ASMi-52 in the form of block
diagrams (Figure 1-5 and Figure 1-6).
1-10 Functional DescriptionASMi-52 Ver. 2.5
Installation and Operation Manual Chapter 1 Introduction
Internal
Oscillator
Data & Clock
DTE
Interface
Control Signals
Modem Glue
Logic
SHDSL
Line Interface
CPU Data Bus
Power
Supply
CPU
LEDs and Terminal Interface
10/100BaseT
Management
Port
Figure 1-5. ASMi-52/4W with V.35 Interface and 10/100BaseT Management Port
Figure 1-6. ASMi-52/4W with Framed E1 Interface and 10/100BaseT Management
Port
The ASMi-52 modem consists of the following major modules:
DTE interface – Prepares the digital data coming from the DTE into a data stream
for modem glue logic. In addition, it translates the data from the
modem glue logic into digital data to be sent to the DTE.
ASMi-52 Ver. 2.5 Functional Description 1-11
Chapter 1 Introduction Installation and Operation Manual
Internal oscillator – Serves as a source of internal clock for the ASMi-52 unit.
Modem glue logic module – Processes the data from/to the SHDSL interface
module.
SHDSL line interface – Translates the received and transmitted data from the line
to the DTE interface.
Power supply – Provides 2.5V, 3.3V, 5V and -5V to the ASMi-52 internal
elements.
CPU – Controls the ASMi-52 operation.
10/100BaseT management port – Provides LAN connection to the SNMP
management station or Telnet host.
LEDs and terminal interface – Provides modem status information via LED
indicators on the front panel, and communicates with the
supervisory terminal.
1.4 Technical Specifications
Line Interface
DTE Interface
Type
Line Coding
Range
Impedance
Connectors
Standard
E1 Jitter
Performance
Protection
Data Rate
2/4-wire unconditioned dedicated line (twisted pair)
TC-PAM
See Table 1-1
135Ω
• ASMi-52: RJ-45
• ASMi-52CD: Two RJ-45
ITU-T 991.2, ETSI 101 524
As per ITU G.823
ITU K.21, UL1950
Depends on the DTE/line interface type and clock mode
(see Table 1-2 and Table 1-3)