Alcatel-Lucent SPEDDTOUCH 591S User Manual
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Copyright © 2001 Alcatel.
All rights reserve d .
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licensed or otherwise distributed for use in any hazardous environments requiring fa il-safe performance, such as in the o peration
of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life-support machines, or weapons
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damage. The customer hereby agrees that the use, sale, licence or other distribution of the products for any such application
without the prior written c on sent o f Alcatel, shall be at th e cus to mer 's s o le ri s k. The customer hereby agrees to def e n d a nd hold
Alcatel harmless from any claims for loss, cost, damage, expense or liability that may arise out of or in connection with the use,
sale, licence or other distribution of the products in such applications .
This document may contain information regarding the use and installation of non-Alcatel products. Please note that this
information is provided as a courtesy to assist you. While Alcatel tries to ensure that this information accurately reflects
information provided by the supplier, please refer to the materials provided with any non-Alcatel product and contact the
supplier for confirmation. Alcatel assumes no responsibility or liability for incorrect or incomplete information provided about
non-Alcatel products.
Alcatel has made reasonable efforts to ensure that the Speed Touch 591s, Release 2.0, complies in all material respects with the
"Referenced Detailed Functional Specifica ti on for Alcatel Prod u ct Date Complianc e " for all loads. To obta in this document and
other information related to Year 2000 Date Com p liance, visit the Alcatel Ye ar 2000 Date Compliance we b sit e at th e URL:
http://www.cid.alcatel.com/year2000/index.html
However, this does not c onstitute a r epresentation o r warranty. The w arranties prov ided for Al catel products, if any, are s et forth
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This docume n t was originally w rit ten in English. If t he re is any conflict or inconsistency b e tween the Engli sh version and any
other version of a document, the English version shall prevail.
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Table of contents
Foreword
Mandatory regulations
Overview
1 — Introduction
1.1 About SHDSL ............................. ....... ............................................................... 1-2
1.2 Overview of the Speed Touch 591s .................................................................. 1-2
1.3 Compatibility ..................................................................................................... 1-4
1.4 Part numbers .................................................................................................... 1-5
2 — Features and typical applications
2.1 Frame relay . ...... ....... ...... ....... ...... ....... ...... ...... ................................................... 2-2
2.2 V.35/X.21 circuit emulation ............................................................................... 2-4
2.3 T1/E1 circuit emulation ..................................................................................... 2-5
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Table of contents
Installation
3 — Installation
3.1 Verifying the shipment ...................................................................................... 3-2
3.2 Installing the Speed Touch 591s and power supply ......................................... 3-3
Configuration
4 — Configuring generic node parameters
4.1 Node parameter configuration .......................................................................... 4-2
4.2 Configuring the network port ............................................................................. 4-8
5 — Configuring frame relay port parameters
5.1 Configuring the user port name and options ..................................................... 5-2
5.2 Configuring the user port stream ...................................................................... 5-6
5.3 Configuring user port stream options ................................................................ 5-8
5.4 Configuring frame forwarding stream options ................................................. 5-14
6 — Configuring frame relay connections
6.1 Configuring frame relay connection options ..................................................... 6-2
6.2 Configuring frame relay traffic parameters ....................................................... 6-4
6.3 Configuring network interworking ..................................................................... 6-5
6.4 Configuring service interworking ....................................................................... 6-7
6.5 Configuring frame forwarding connection options ............................................ 6-8
7 — TCA profiles
7.1 Overview ........................ .................................................... ............................... 7-2
7.2 TCA profile types and parameters ........................ ...... ....... ...... ......................... 7-3
7.3 Maximum permissible time ............................................................................... 7-4
7.4 FRCC-type TCA profiles ................................................................................... 7-5
7.5 FRSC-type TCA profiles ................................................................................... 7-8
8 — Configuring the V.35/X.21 CE user port
8.1 Configuring the user port name and options ..................................................... 8-2
8.2 Configuring user port circuit parameters ........................................................... 8-5
9 — Configuring V.35/X.21 CE connections
9.1 Configuring connection options ........................................................................ 9-2
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10 — Configuring the T1/E1 CE port
10.1 Configuring the T1/E1 port name and service options .................................... 10-2
10.2 Configuring the T1 port physical options ........................................................ 10-5
10.3 Configuring the E1 port physical options ...................................................... 10-10
10.4 Configuring trunk conditioning parameters ................................................... 10-11
11 — Configuring T1/E1 CE connections
11.1 Connection options ......................................................................................... 11-2
12 — Configuring T1/E1 CE channel groups
12.1 Configuring channel groups ............................................................................ 12-2
12.2 Creating channel groups ................................................................................. 12-3
12.3 Adding channels ............................................................................................. 12-3
12.4 Naming channel groups .................................................................................. 12-4
12.5 Displaying channels in a channel group ......................................................... 12-5
12.6 Configuring the padding octet pattern ............................................................. 12-5
12.7 Configuring the playout buffer size ................................................................. 12-6
12.8 Configuring the number of data octets ............................................................ 12-7
12.9 Deleting channels and channel groups ........................................................... 12-8
Table of contents
Maintenance
13 — Maintenance and file transfers
13.1 System maintenance ...................................................................................... 13-2
13.2 Network port maintenance .............................................................................. 13-4
13.3 User and T1/E1 port maintenance .................................................................. 13-5
13.4 File transfers ................................................................................................... 13-9
14 — Troubleshooting
14.1 LED activity ..................................................................................................... 14-2
14.2 Alarms ............................ .................... ................... ................... .................... ... 14-4
15 — Statistics
15.1 Frame relay statistics ..... ....... ...... ....... ...................................... ....... ...... ....... ... 15-2
15.2 V.35/X.21 CE statistics ................................................................................... 15-6
15.3 T1 CE statistics ............................................................................................... 15-9
15.4 E1 CE statistics ............................................................................................. 15-13
Speed Touc h 591s Technical Practices v
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Table of contents
App A. Pin and signal assignments A-1
Glossary
Index
vi Speed Touch 591s Technical Practices
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Foreword
This guide describes the Speed Touch 591s. It consists of the following chapters.
• Chapter 1 introduces SHDSL technology.
• Chapter 2 describes features and typical applications.
• Chapter 3 describes installation.
• Chapter 4 describes node configuration procedures that are common to all
• Chapters 5 to 7 describe configuration procedures for the frame relay version.
• Chapters 8 and 9 describe configuration procedures for the V.35 CE version.
• Chapters 10 to 12 describe configuration procedures for the T1 and E1 CE
• Chapter 13 describes maintenance and file transfers.
• Chapter 14 describes LED activity and alarms.
• Chapter 15 describes available statistics.
• The appendix lists pin and signal assignments for Speed Touch 591s ports.
versions.
versions.
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Foreword
Conventions
The following conventions are used to indicate important information.
Danger — Indicates th at the described activity or sit uation may pose
a threat to personal safety.
Warning — Indicates that the described activity or situation may
cause equipment damage.
Caution — Indicates that the described activity or situation may
cause service interruption.
Note — Provides special information.
An em dash (—) in a table cell means that the information does not apply.
An empty cell in a table means that the system or component does not support the
item.
Steps with softkeys use
↵ to indicate the Return key.
An asterisk (*) next to a softkey indicates the default option.
The procedures in this document do not dir ect you to se lect the PROCEED softke y;
follow the prompt on the screen.
Table 1 lists the documentation conventions used to describe the operations and
procedures in a node management session.
When there are options in a procedure, t hey are ident ified by le tters, as shown in the
following sample procedure.
Procedure 1 Sample
1 This step offers three options. Choose one of the options.
a This is the first option.
b This is the second option.
c This is the third option.
2 This step has no options.
viii Speed Touch 591s Technical Practices
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Table 1 Documentation conventions for node management sessions
Convention Action Examples
<key> Enter a keyboard key
SOFTKEY Select the softkey TO_ENDPOINT
<identifier> Enter the object identifier <shelf>
<value> Enter the numeric value <5>
<word> Enter characters exactly as shown <CPSS>
↵
<Esc>
PROCEED
<slot>
Softkey trees
Softkey trees are used throughout this document to provide an overview of the
configuration options available to the user. They are followed by specific
information on procedures and variables for each configuration option.
Foreword
Speed Touc h 591s Technical Practices ix
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Foreword
x Speed Touch 591s Technical Practices
90-8785-01 February 2001
Mandatory regulations
The mandatory regulatio ns govern the i nstallati on and operati on of the Speed Tou ch
591s. Adhere to these instructions to ensure that regulatory compliance requirements
are met.
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Mandatory regulation s
List of terms
Table 2 lists the expansions of abbreviations used.
Table 2 Abbreviations
Abbreviation Expansion
AS/NZS Australia/New Zealand Standards
CE Conformité Européenne
CSA Canadian Standards Association
EEC European Economic Community
EMC Electromagnetic Compatibility
EN European Norm
FCC Federal Communications Commission
IEC International Electrotechnical Committee
LVD Low Voltage Directive
NRTL Nationally Recognized Testing Laboratory
REN Ringer Equivalent Number
SELV Safety Extra Low Voltage
TNV Telecommunications Network Voltage
TTE Telecommunications Terminal Equipment
UL Underwriters Laboratories
General requirements
Warning — The system contains no user-serviceable parts. Send
parts requiring service to qualified personnel.
Caution — 1 To prevent accidental shorti ng of cards , the cards mu st
be correctly aligned between the card guides before insertion.
Caution — 2 Do not connect the power cable to the unit when the
power supply is plugged in. Always connect the power cable to the
unit before you plug in the power supply.
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Mandatory regulations
Equipment interconnection points
Interconnection points of the system are defined as follows:
• SELV for the user, T1, E1, and serial ports on the Speed Touch 591s
• TNV for the SHDSL network port on the Speed Touch 591s
TNV can be classified as TNV1, TNV2, or TNV3.
TNV1 circuits are telecommunications circuits that have voltages below SELV
limits, may be subject to overvoltages, and can be connected off premises (to an
outside plant).
TNV2 circuits are telecommunications circuits that have voltages exceeding SELV
limits, are not subject t o overvolt ages, and d o not conne ct off p remises (to an outside
plant).
TNV3 circuits are telecommunications circuits that have voltages above SELV
limits, may be subject to overvoltages, and can be connected off premises (to an
outside plant). The SHDSL network port on the Speed Touch 591s is TNV3.
Connect SELV circuits on this equipment only to other circuits that comply with the
requirements of SELV circuits as defined in CSA C22.2 No. 950, UL1950,
EN60950, AS/NZS 3260, and IEC950.
Connect TNV circuits on this equi pment only to othe r ci rcuits that comply with the
requirements of TNV circuits as defined in CSA C22.2 No. 950, UL1950, EN609 50,
AS/NZS 3260, and IEC950.
External power supply
Warning — The Speed Touch 591s is intended for use when
powered by an appr opriate external power supply available onl y from
Alcatel. The use of any ot her power supply may i nvalidate r egulatory
approvals of this equipment.
EMC compliance
EMC compliance may require the use of ferrites, shielded cables, or other special
accessories. Where required, these special accessories must be installed per the
instructions.
Regulatory symbols
The following sections show examples of generally used regulatory approvals
symbols. These symbols may be used on pr oduc t marking s such as a pproval s label s
and are described in IEC417.
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Mandatory regulation s
Power on
Power off
This symbol indicates that the principal On/Off switch is in the On (|) position.
Figure 1 On position symbol for On/Off switch
9715
This symbo l indicates th at the principal On/Off sw itch is in the O ff (O) positio n.
Figure 2 Off position symbol for On/Off switch
9716
Standby
This symbol indicates that the switc h i s i n the standby position and that the primary
power is still On.
Figure 3 Standby position symbol for On/Off switch
9726
xiv Spe ed Touc h 591 s Tec hni ca l Practi ce s
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Mandatory regulations
Protective grounding terminal
These symbols indicate a terminal that must be connected to earth ground prior to
making any other connections to the equipment.
Figure 4 Supply wire protective earth
Figure 5 Protective earth
Dangerous voltage
9717
9718
This symbol alerts the use r to the pr es ence of uninsulated dang er ous vo lt age within
the product’s enclosure that could cause el ectric shock. This label would be inst alled
on the outside of the product enclosure.
Figure 6 Dangerous voltage symbol
Instructions
This symbol alerts the user to the presence of important operating and maintenance
(servicing) instructions in the product documentation.
Figure 7 Important instructions symbol
9719
9720
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Mandatory regulation s
Industr y Canada regulations
Note — The Industry Canada (formerly known as the Department
of Communications) label identifies certified equ ipment.
This certification means that the equipment meets certain
telecommunications network protective, operational and safety
requirements as prescribed in the Terminal Equipment Technical
Requirements document( s) . Indu st ry Canada does not guarantee that
the equipme nt will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the loc al telecommuni cations compan y. The equi pment
must also be installed using an acceptable method of connection. The customer
should be aware that compliance with the above conditions may not prevent
degradation of service in some situations.
Repairs to certified equipment shoul d be coordina ted by a re presenta tive desig nated
by the supplier. Any repairs or alterations made by the user to this equipment, or
equipment malfunctions, may give the telecommunications company cause to
request the user to disconnect the equipment.
For their own protection, users should make sure that the electrical ground
connections of the power utility, telephone lines, and internal metallic water pipe
system, if present, are connected together. This precaution may be particularly
important in rural areas.
Warning — Users should not attempt to make electrical ground
connections; cont act an ele ctri cal i nspect io n autho rity , or elec tric ian,
as appropriate.
Note — 1 The Ringer Equivalence Number (formerly k nown as Load
Number, see note below) a ssigned to each termi nal device provides an
indication of the maximum number of terminals allowed to be
connected to a telephone interface. The termination on an interface
may consist of any combination of devices, subject only to the
requirement that the sum of the Ringer Equivalence Numbers of all
the devices does not exceed 5.
The REN for the node is not applicable.
Note — 2 As of August 14, 1996, the Load Number has been changed
to Ringer Equivalence Number by Ind ustry Canada, to coi ncide with
the FCC of the United S tates for the purpose of country harmonizati on
and promoting the goals of NAFTA.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numériqu e de la classe A est conforme à la norme NMB-003 du Canada.
xvi Spe ed Touc h 591 s Tec hni ca l Practi ce s
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Mandatory regulations
Safety approval for dc systems
The dc source for the system must meet the requirements of a SELV source in
accordance with CSA C2 2.2 No. 950. The system is intended for use with a SELV
secondary source that is electrically isolated from the ac source, and that is reliably
connected to earth.
United States Federal Communications Commission
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a commercial
environment. This equipment generates, uses and can radiate radio frequency
energy, and if not inst alled an d used in ac cordance wi th the ins tructi on manual, may
cause harmful in terfere nce t o radio c ommunicat ions. Op eration of this equipmen t in
a residential area is likely to cause harmful interference, in which case the users will
be required to correct the interference at their own expense.
In the event that repairs are needed to this equipment, contact:
Alcatel CID
810 Commerce Park Drive,
Ogdensburg, NY 13669
(315) 393-9981
Safety approval for dc systems
The dc source for the system must meet the requirements of a SELV source in
accordance with UL1950. The system is intended for use with a SELV secondary
source that is electrically isolated from the ac source, and that is reliably connected
to earth.
CSA NRTL
This equipment is certified by the Canadian Standards Association as meeting the
requirements of UL1950, Safety of Information Technology Equipme nt (or UL1459,
Safety of Telephone Equipment). CSA is listed by the American Federal
Occupational Safety an d Health Administration as equivalent to Underwriters
Laboratories and other American safety testing laboratories under the Nationally
Recognized Testing Laboratories program.
European regulations
This product has been CE mark ed in a ccorda nce with the req uir ements of Europe an
Directive 93/68/EEC.
This product complies with the requirements of European Directive(s) 73/23/EEC
(LVD), 89/336/EEC (EMC) and 91/263/EEC (TTE).
This equipment must be permanently earthed.
Speed Touch 591s Technical Practices xvii
February 2001 90-8785-01
Mandatory regulation s
EMC compliance
Safety approval for dc systems
United Kingdom regulations
Power supply cord wiring
For the Speed Touch 591s to meet the requirements of EN55022 Class B, a ferrite
bead must be installed on the network connection cables.
The network port must have a Steward ferrite bead (part number 28A2025-0A2) or
equivalent, installed as closely as possible to the port.
The dc source for the system must meet the requirements of a SELV source as
defined in EN60950.
The instructions for powe r s uppl y cord and plug wiring are no longer mandatory. I f
this information is required, consult the Australian regulations section for details,
since both countries h ave identi cal po wer supply co rd and plug wi ring requi rements.
External power supply
Warning — The Speed Touch 591s is intended for use when
powered by an appr opriate external power supply available onl y from
Alcatel. The use of any ot her power supply may i nvalidate r egulatory
approvals of this equipment.
Norway regulations
Apparatus maa tilkobles jordet stikkontakt. Jordet Stikkontakt skal benyttes naar
apparatet ti lkobles data nett.
The equipment must be connected to an earthed mains socket outlet. An earthed
mains socket outlet must be us ed when the equipment i s connected to a data ne twork.
Sweden regulations
Apparaten skall anslutas till jordat uttag nar den anslutas till ett natverk.
The product should be connected to a mains socket outlet with earthing contact.
Switzerla nd regulati ons
The mains plug must comply with SEV/ASE 1011.
xviii Speed Touch 591s Technical Practices
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Mandatory regulations
Australian regulations
The core wires in the mains lead use the following color codes:
• green and yellow: earth
• blue: neutral
• brown: live
The colors of the core wires i n the mains lea d of this equi pment may not corr espond
with the colored markings identifying the terminals in the plug . Proceed as follows
if power su pply cord rew iring is req uired:
• the green and yellow core wire must be conn ected to t he terminal in the plug that
is marked with the letter E or with the earth symbol, or is colored green and
yellow
• the blue core wire must be connected to the termi nal that is marked with the le tter
N, or is colored black
• the brown core wire must be connected to the terminal that is marked with the
letter L, or is colored red
Warning — This equipment must be earthed.
Speed Touch 591s Technical Practices xix
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Mandatory regulations
Speed Touch 591s Technical Practices xx
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Overview
1 — Introduction
2 — Features and typical applications
Speed Touch 591s Technical Practices
February 2001 90-8785-01
1 — Introduction
1.1 About SHDSL 1-2
1.2 Overview of the Speed Touch 591s 1-2
1.3 Compatibility 1-4
1.4 Part numbers 1-5
Speed Touc h 591s Technical Practices 1-1
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1 — Introduction
1.1 About SHDSL
DSL technology dramatically increases the digital capacity of ordinary telephone
lines (the local co pper loo ps). The sp eeds obt ainabl e using DSL te chn ology ar e tied
to the distance between the customer and the Telco central office. The SHDSL
variant of DSL technology is designed for business applications, where high speed
is required in both transmission dire ctions. SHDSL is a rate-adaptive techn ology,
which, unlike ADSL, cannot share lines with analog telephones.
SHDSL provides symmetric DSL d elivery over a single coppe r pair at rat es between
192 kb/s and 2304 kb/s, and a 35% to 50% improvement in distance at a given rate
over traditional symmetric DSL. It is a purely digital technique that uses the lower
band of frequencies to achieve range performance while maintaining the ability to
transmit voice or data services symmetrically.
The narrower frequency band of SHDSL reduces the possibility of interference or
crosstalk when it is d epl oye d in the same binder group or cable as other DSL-based
services, such as ADSL.
Performance varies with loop cha ract eristic s, such as len gth, wire gau ge, noise, and
the number and location of bridged taps and gauge changes. Best performance is
obtained on short, clea n loops. The SHDSL bit rate can be configured to adapt to the
line conditions.
1.2 Overview of the Speed Touch 591s
The Speed Touch 591s is a device that provides SHDSL access to the ATM core
network from customer pre mises. It can be manage d locally usi ng its own NMTI via
its serial port, or remotely using the 5620 Network Manager. Four versions of the
Speed Touch 591s are available:
• frame r elay
• V.35/X.21 circuit emulation
• T1 circuit emulation
• E1 circuit emulation
Figure 1-1 shows the front view of the Speed Touch 591s, which is the same for all
versions. Figure 1-2 shows the back view of the frame relay and V.35/X.21 circuit
emulation version, and Figures 1-3 and 1-4 show the back views of the T1 and E1
circuit emulation versions, respectively.
Figure 1-1 Front view of the Speed Touch 591s
Speed Touch
Ethernet Serial
Power
Status
1-2 Speed Touch 591s Technical Practices
Link
SHDSL
Error
Ethernet
Link
15138
90-8785-01 February 2001
1 — Introduction
Figure 1-2 Back view of the frame relay and V.35/X.21 CE Speed Touch 591s
Network Port
Power
User Port
Figure 1-3 Back view of the T1 CE Speed Touch 591s
Network Port
Power
T1
User Port
Figure 1-4 Back view of the E1 CE Speed Touch 591s
Network Port
E1
Tx DSR DTR CTS
DCD/I
Rx RTS/C
T1
T1
SIGNAL
ALARM
Tx DSR DTR CTS
DCD/I
Rx RTS/C
E1
E1
SIGNAL
ALARM
MTCE
14636
MTCE
14645
Power
User Port
Tx DSR DTR CTS
DCD/I
Rx RTS/C
MTCE
14637
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1 — Introduction
The Speed Touch 591s provides:
• a network port (RJ45 connector) for connection to the telephone line
• a T1 port (RJ45 connector) for conn ection to data devices or networks (T1 version
only)
• an E1 port (RJ45 connector) for connection to data devices or networks (E1
version only)
• a user port (DB37 connector) for connection to data devices or networks
• a serial port (RJ45 con nect or) for connection to a VT100 termin al f or l ocal node
management sessions
• a power cable connector
Note — The E1 circuit emulation ver sion of the Speed Touch 591s is
designed for use with 120
Ω/75 Ω twisted pair or coaxial cable adapter must be fitted when
using 75
Ω E1 coaxial cabling.
The Speed Touch 591s has its own NMTI, which can be accessed either locally on
the serial port, or remotely using a 5620 Network Manager.
Table 1-1 lists the power requirements for the Speed Touch 591s.
Ω E1 twisted pair cabling . An exter nal 120
1.3 Compatibility
The Speed Touch 591s is compatible with:
• Release 4.1 (and later) of the 5620 Network Manager
• Release 1.0 (and later) of the 7350 ASAM
• Release 4.1.10 (and later) of the 7300 ASAM
Note — The Speed Touch 591s can be mana ged via CPSS us ing the
5620 Network Manager only when it is co nnec te d to a 7350 ASAM.
When the Speed Touch 591s is conne cted to a 7300 ASAM, the only
management operations that can be carried out are Telnet and
software downloads. Software must be downloaded over ATM
connections from workstations not running CPSS.
Table 1-1 Speed Touch 591s power requirements
Specification Value
Power consumption 11.5 W
Voltage range 90 to 132 V ac, 60 Hz
(North America)
180 to 264 V ac, 50 Hz
(Rest of the world)
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1.4 Part numbers
Table 1-2 lists part numbers for the various versions of the Speed Touch 591s.
Component Part number
Speed Touch 591s V.35 FR, Release 2.0 90-8056-01
Speed Touch 591s V.35 CE, Release 2.0 90-8056-02
Speed Touch 591s T1 CE, Release 2.0 90-8057-01
Speed Touch 591s E1 CE, Release 2.0 90-8057-02
Ω external adapter for E1 circuit emulation
75
Speed Touch 591s
Power adapter - 115 V (North America) 90-5989-01
Power adapter - 230 V (International) 90-5990-40
Power adapter - 230 V (IEC, no cord) 90-5990-41
Power adapter - 230 V (United Kingdom) 90-5990-42
Power adapter - 230 V (Europe) 90-5990-43
User port V.36/TIA/EIA-449 cable 90-3576-01
User port V.35 cable 90-3577-01
User port X.21 cable 90-3578-01
Speed Touch 591s Technical Practices, Release 2.0 90-8785-01
1 — Introduction
Table 1-2 Part numbers for the Speed Touch 591s
90-7343-01
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February 2001 90-8785-01
1 — Introduction
1-6 Speed Touch 591s Technical Practices
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2 — Features and typical applications
2.1 Frame relay 2-2
2.2 V.35/X.21 circuit emulation 2-4
2.3 T1/E1 circuit emulation 2-5
Speed Touc h 591s Technical Practices 2-1
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2 — Features and typical applications
2.1 Frame relay
The frame relay Speed Touch 591s provides the following key features:
• support for SHDSL payload rates of 192, 384, 512, 768, 1024, 11 52, 1536, 2048,
and 2304 kb/s
• frame relay UNI, PVC support
• frame relay QoS, providing four service categories:
• real time
• low delay
• committed throughput
• best effort
• frame-relay-to-ATM network interworking, allowing two frame relay devices to
be connected over an ATM network with guaranteed quality of service over the
entire line (see Figure 2-1)
• frame-relay-to-ATM service interworking, allowing a frame relay device to be
connected to an ATM device over an ATM network (see Figure 2-2)
• frame forwarding, allowing th e system to suppor t packet-ori ented protocol s such
as X.25 and PPP, which use HDLC-based packets, and to transport them across
an ATM network (see Figure 2-3)
Frame relay
user
ST591s
SHDSL
Figure 2-1 Network interworking
S
H
D
S
L
7350 ASAM
ATM
network
S
H
D
S
L
7350 ASAM
F
R
7350 ASAM
SHDSL
ST591s
Frame relay
user
T1/FR
Frame relay
user
15105
2-2 Speed Touch 591s Technical Practices
90-8785-01 February 2001
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