Selta Alyseo 106 User manual

User Manual
Alyseo 106

Alyseo 106
 SELTA S.p.A.All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Alyseo 106 User Manual
720041008-A0-GB Issue 4
The mark on the product guarantees compliance with the following
standards:
• 89/336/CE (EMC)
• 73/23/CE (LVD)
The content of this manual is ownership of SELTA, which reserves the rights in compliance with the law. Any
reproduction, modification, use and diffusion of its content without written authorization are forbidden.
Furthermore, SELTA reserves the right to modify, without notice, the content of this manual and rejects any
responsibility for any mistakes and omissions.
SELTA S.p.A.
Via Emilia 231
29010 Cadeo
ITALIA
Tel: [phone] P/N 720041008-A0-GB
Telefax: +39.0523.5016.333 Issue 4 of 05/04

Alyseo 106
 SELTA S.P.A. Tutti i diritti riservati. Nessuna parte di questo documento può essere riprodotta, memorizzata in sistemi di
archivio o trasmessa in qualsiasi forma o mezzo senza la preventiva autorizzazione della SELTA S.p.A.
Contents I
Alyseo 106 User Manual
720041008-A0-GB Issue 4
CONTENTS
1. FOREWORD .......................................................................................................................................... 1-1
2. OVERVIEW............................................................................................................................................. 2-1
2.1 THE ACCESS TERMINALS IN SHDSL TECHNOLOGY .................................................................................... 2-1
2.2 ALYSEO 106 TERMINAL ........................................................................................................................ 2-1
2.2.1 Main characteristics .................................................................................................................... 2-1
2.2.2 SHDSL Port ................................................................................................................................ 2-2
2.2.3 ATM Termination ........................................................................................................................ 2-2
2.2.4 Frame Relay Port........................................................................................................................ 2-3
2.2.4.1 V.35 interface......................................................................................................................................... 2-3
2.2.4.2 G.703 interface ...................................................................................................................................... 2-4
2.2.5 Interworking ................................................................................................................................ 2-4
2.2.5.1 Service interworking............................................................................................................................... 2-4
2.2.5.2 Network interworking ............................................................................................................................. 2-5
2.2.5.3 Fault management protocols ................................................................................................................. 2-5
2.2.6 Configuration and diagnostics..................................................................................................... 2-7
2.3 LEDS AND SIGNALINGS .......................................................................................................................... 2-7
3. START-UP.............................................................................................................................................. 3-1
3.1 CHECK OF MATERIAL ............................................................................................................................. 3-1
3.2 INSTALLATION AND POWER SUPPLY ........................................................................................................ 3-1
4. CONFIGURATION INTERFACE............................................................................................................ 4-1
4.1 FOREWORD .......................................................................................................................................... 4-1
4.2 SAVING THE CONFIGURATION................................................................................................................. 4-2
4.3 LOADING OF THE CONFIGURATION DATABASE ......................................................................................... 4-3
4.4 CHANGE OF CONFIGURATION ................................................................................................................. 4-3
4.5 COMMAND SHELL .................................................................................................................................. 4-4
4.5.1 “user” modality ............................................................................................................................ 4-5
4.5.1.1 “show” menu .......................................................................................................................................... 4-5
4.5.1.2 “running-config” menu............................................................................................................................ 4-5
4.5.1.3 “diagnostic” menu .................................................................................................................................. 4-6
4.5.2 “superuser” modality ................................................................................................................... 4-9
4.5.2.1 “clear” menu........................................................................................................................................... 4-9
4.5.2.2 “ping” menu............................................................................................................................................ 4-9
4.5.2.3 “atmping” menu.................................................................................................................................... 4-10
4.5.2.4 “telnet” menu........................................................................................................................................ 4-10
4.5.2.5 “load” menu.......................................................................................................................................... 4-10
4.5.2.6 “save” menu......................................................................................................................................... 4-10
4.5.2.7 “reboot” command ............................................................................................................................... 4-10
4.5.2.8 “upgrade” menu ................................................................................................................................... 4-10
4.5.2.9 “application” menu ............................................................................................................................... 4-11
4.5.2.10 “configure IWF” menu ..................................................................................................................... 4-11
4.5.2.10.1 SHDSL .......................................................................................................................................................... 4-12
4.5.2.10.2 Frame Relay................................................................................................................................................... 4-13
4.5.2.10.3 ATM .............................................................................................................................................................. 4-19
4.5.2.10.4 IWF................................................................................................................................................................ 4-21

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
II Contents
Alyseo 106 User Manual
720041008-A0-GB Issue 4
4.5.2.11 “configure CF” menu ....................................................................................................................... 4-25
4.5.2.11.1 Addition of entries in the table of ATM switch ............................................................................................. 4-25
4.5.2.11.2 Addition of entries to the table of ATM switch ............................................................................................. 4-26
4.5.2.11.3 Configuration of Control Admission Control................................................................................................ 4-27
4.5.2.11.4 Configuration of E1/G.703 port..................................................................................................................... 4-27
4.5.2.11.5 Configuration of the control port................................................................................................................... 4-29
4.5.2.12 Diagnostics menu for the Cell Forwarding application .................................................................... 4-29
4.6 REMOTE MANAGEMENT VIA THE INTEGRATED HTTP SERVER .............................................. 4-31
5. LIST OF CODES .................................................................................................................................... 5-1
5.1 LIST OF TERMINALS ......................................................................................................................... 5-1
5.2 LIST OF OPTIONAL PARTS ...................................................................................................................... 5-1
5.3 LIST OF MANUALS.................................................................................................................................. 5-1
5.4 LIST OF SOFTWARE ............................................................................................................................... 5-2
6. MECHANICAL STRUCTURE AND INSTALLATION............................................................................. 6-1
6.1 OVERVIEW ............................................................................................................................................ 6-1
6.2 SHAPE AND SIZE ................................................................................................................................... 6-2
6.3 POSITION AND WALL INSTALLATION ........................................................................................................ 6-3
6.4 PRESETTING FOR WETTING CURRENT..................................................................................................... 6-4
7. TECHNICAL CHARACTERISTICS........................................................................................................ 7-1
7.1 ELECTRICAL CHARACTERISTICS ............................................................................................................. 7-1
7.1.1 ALYSEO 106............................................................................................................................... 7-1
7.1.1.1 Power supply ......................................................................................................................................... 7-1
7.1.1.2 SHDSL interface .................................................................................................................................... 7-1
7.1.1.3 RS232 interface to PC ........................................................................................................................... 7-1
7.1.1.4 V.35 interface......................................................................................................................................... 7-2
7.1.1.5 G.703 interface ...................................................................................................................................... 7-2
7.2 CLIMATIC-ENVIRONMENTAL CHARACTERISTICS ....................................................................................... 7-5
7.2.1 Operation .................................................................................................................................... 7-5
7.2.2 Storing......................................................................................................................................... 7-5
7.2.3 Transport..................................................................................................................................... 7-5
7.3 INSULATION AND ELECTROMAGNETIC COMPATIBILITY ......................................................................... 7-6
7.3.1 Dielectric strength and insulation ................................................................................................ 7-6
7.4 ELECTROMAGNETIC COMPATIBILITY ....................................................................................................... 7-6
7.4.1 Radiofrequency radiated electromagnetic fields (Emission) (EN 55022) ................................... 7-6
7.4.2 Electrostatic discharges (Immunity) (EN 61000-4-2) .................................................................. 7-6
7.4.3 Radiofrequency radiated electromagnetic fields, mod. in amp. (Immunity) (EN 61000-4-3) ...... 7-6
7.4.4 Fast Transients (Immunity) (EN 61000-4-4) ............................................................................... 7-6
7.4.5 High energy pulses (Immunity) (EN 61000-4-5) ......................................................................... 7-6
7.4.6 High energy pulses (Resistivity) (K.20/K21) ............................................................................... 7-6
7.4.7 Immunity against continue noises conducted at radiofrequency (Immunity) (EN 61000-4-6) .... 7-7
7.4.8 Power Induction (Resistivity) (K.21/K20) .................................................................................... 7-7
7.4.9 Power Contact (Resistivity) (K.21)..............................................................................................7-7
7.4.10 Noises caused by high voltage lines TAV (K.54)........................................................................ 7-7
7.4.11 Conducted electromagnetic noises (Emission) (ETS 300 386-1) ............................................... 7-7
7.5 MECHANICAL CHARACTERISTICS ............................................................................................................ 7-7
7.5.1 NTU Stand Alone ........................................................................................................................ 7-7
8. PINOUT OF CONNECTORS.................................................................................................................. 8-1
9. TECHNICAL NOTES FOR HUMAN AND ENVIRONMENTAL SAFE USE FOR ALYSEO SYSTEMS 9-1
9.1 INTRODUCTION ................................................................................................................................ 9-1

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Contents III
Alyseo 106 User Manual
720041008-A0-GB Issue 4
9.1.1 Product safety ............................................................................................................................. 9-1
9.1.2 Information about the composition of products ........................................................................... 9-2
9.2 DANGER IDENTIFICATION AND PREVENTION MEASURES ........................................................................... 9-3
9.2.1 Common risks ............................................................................................................................. 9-3
9.2.2 Electrical risks ............................................................................................................................. 9-4
9.2.3 Fire risk ....................................................................................................................................... 9-4
9.2.4 Mechanical risks ......................................................................................................................... 9-4
9.2.5 Chemical risks............................................................................................................................. 9-4
9.3 TRANSPORT.......................................................................................................................................... 9-4
9.4 ENVIRONMENTAL IMPACT .............................................................................................................. 9-5
9.4.1 During the life-cycle .................................................................................................................... 9-5
9.4.2 Packages management .............................................................................................................. 9-5
9.4.3 End of life-cycle: products management..................................................................................... 9-5

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
IV Contents
Alyseo 106 User Manual
720041008-A0-GB Issue 4
Page intentionally left blank

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Index of Figures I
Alyseo 106 User Manual
720041008-A0-GB Issue 4
INDEX OF FIGURES
FIGURE 2-1 CELL FORWARDING MODALITY ............................................................................................ 2-3
FIGURE 2-2 ENCAPSULATION OF PROTOCOLS IN SERVICE INTERWORKING MODALITY
(TRANSLATED OR TRANSPARENT MODALITY)................................................................. 2-4
FIGURE 2-3 ENCAPSULATION OF THE PROTOCOLS IN INTERWORKING NETWORK MODALITY ..... 2-5
FIGURE 2-4 STATUS DIAGRAM FOR THE FAULT MANAGEMENT........................................................... 2-6
FIGURE 2-5 LIGHT SIGNALINGS ................................................................................................................. 2-8
FIGURE 4-1 EXAMPLE OF WEB PAGE (“CONFIGURE” MENU) ............................................................. 4-31
FIGURE 4-2 EXAMPLE OF WEB PAGE (“SHOW” AND “DIAGNOSTIC”).................................................. 4-32
FIGURE 6-1 – BOX FOR ALYSEO 106 STAND ALONE ............................................................................... 6-2
FIGURE 6-2 – WALL POSITION OF ALYSEO 106 STAND ALONE ............................................................. 6-3
FIGURE 6-3 – WETTING CURRENT PRESETTING .................................................................................... 6-4
FIGURE 7-1 – MASK FOR JITTER ACCEPTANCE ...................................................................................... 7-3
FIGURE 8-1 – DESCRIPTION OF CONNECTORS....................................................................................... 8-1

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
II Index of Figures
Alyseo 106 User Manual
720041008-A0-GB Issue 4
Page intentionally left blank

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Index of annexes I
Alyseo 106 User Manual
720041008-A0-GB Issue 4
INDEX OF ANNEXES
ILL 154084017

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
II Index of annexes
Alyseo 106 User Manual
720041008-A0-GB Issue 4
Page intentionally left blank

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Abbreviations and acronyms I
Alyseo 106 User Manual
720041008-A0-GB Issue 4
ABBREVIATIONS AND ACRONYMS
AAL5 ATM Adaptation Level 5
ABR Available Bit Rate
ACT Absolute Congestion Threshold
AIS Alarm Indication Signal
ATM Asynchronous Transfer Mode
ATMF ATM Forum
Bc Committed Burst size
Be Excess Burst size
CAC Connection Admission Control
CBR Constant Bit Rate
CIR Committed Information Rate
CLI Command Line Interface
CLP Cell Loss Priority
CO Central Office
CP Customer Premises
CPE Customer Premises Equipment
DE Discard Eligibility
DLCI Data Link Connection Identifier
DSL Digital Subscriber Line
DSLAM DSL Access Multiplexer
DSU Data Service Unit
EIR Excess Information Rate
EOC Embedded Operational Channel
FR Frame Relay
FRAD Frame Relay Access Device
FRCC FR Card Congestion
FRF Frame Relay Forum
FRSC FR Stream Congestion

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
II Abbreviations and acronyms
Alyseo 106 User Manual
720041008-A0-GB Issue 4
GCRA Generic Cell Rate Algorithm
HTML HyperText Markup Language
HTB HierarchicalToken Bucket
IP Internet Protocol
ISP Internet Service Provider
IWF Network Interworking Function
LAN Local Area Network
LIV Link Integrity Verification
LTU Line Termination Unit
MBS Maximum Burst Size
MCT Middle Congestion Threshold
MCR Minimum Cell Rate
NAT Network Address Translation
NIW Network InterWorking
NSP Network Service Provider
NTU Network Termination Unit
OAM Operation And Maintenance
PAM Pulse Amplitude Modulation
PCR Peak Cell Rate
PVC Permanent Virtual Circuit
QoS Quality of Service
RDI Remote Defect Indication
RFC Request For Comments
RTP Real Time Protocol
SAR Segmentation And Reassembly
SCC Serial Communication Controller
SCR Sustainable Cell Rate
SDRAM Synchronous Dynamic RAM
SHDSL Symmetrical singlepair High Bit Rate Digital Subscriber Line
SIW Service InterWorking
SNMP Simple Network Management Protocol
UBR Unspecified Bit Rate

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Contents III
Alyseo 106 User Manual
720041008-A0-GB Issue 4
UBR+ Unspecified Bit Rate plus
UNI User to Network Interface
VBR-rt Variable Bit Rate real time
VC Virtual Circuit
VLAN Virtual Local Area Network
VP Virtual Path
WAN Wide Area Network

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
IV Abbreviations and acronyms
Alyseo 106 User Manual
720041008-A0-GB Issue 4
Page intentionally left blank

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Foreword 1-1
Alyseo 106 User Manual
720041008-A0-GB Issue 4
1. FOREWORD
The ALYSEO 10x terminal equipment is a family of devices that use the normal phone subscriber
lines for the access and the transmission of data stream through ATM network; they are available
in the following models:
Alyseo 101 4 Ethernet ports
Alyseo 103 V.11/V.28/V.35/V.36 Circuit Emulation
Alyseo 103 G.703 Circuit Emulation
Alyseo 104 G.703 Frame Relay/ATM Interworking function
Alyseo 105 G.703 Cell Forwarding
Alyseo 106 V.35/G.703 Frame Relay/ATM Interworking function and Cell Forwarding
The transmission technique, common to all the models of the family, is known as Symmetrical
singlepair High Bit Rate Digital Subscriber Line for its characteristic of allowing a digital
transmission at high bit rate over the common subscriber lines. The transmission takes place in a
symmetrical modality, so these devices are particularly indicated for business users, as they find
application in the realization of virtual private networks VLAN for the data transmission between far
off sites.
For the transmission over these lines, a multilevel line coding known as 16 PAM (16 Pulse
Amplitude Modulation) is used, where a group of 4 bits is represented by a symbol with sixteen
voltage levels, according the ETSI TS 101 524 normative. The operation modalities with single pair
(2 wire) and double pair (4 wire) are supported. The terminals with 4 wires functionality can be
configured in the 2 wire modality.
The following documentation present in this document refers to Alyseo 106 terminal. The
characteristics described here below can be available or not, depending on the software version
and on the physical interfaces equipped on the terminal in use.

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
1-2 Foreword
Alyseo 106 User Manual
720041008-A0-GB Issue 4
Page intentionally left blank

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Overview 2-1
Alyseo 106 User Manual
720041008-A0-GB Issue 4
2. OVERVIEW
2.1 THE ACCESS TERMINALS IN SHDSL TECHNOLOGY
The DSL technlogy has greatly increased the transmissive capacity of the twisted pair. The
possible bit rates mainly depend on the distance between the central site and the remote site. In
particular, the SHDSL technology allows high bit rate, up to 2304 Kbit/s, on a single twisted pair in
symmetrical modality. The Alyseo 106 terminal is available also in the ‘4 wire’ version that,
exploiting a second twisted pair, doubles the band available or can increase the capacity in terms
of maximum reachable distance. This technology finds application particularly in business
enviroment. The band of the twisted pair is totally dedicated to the data transmission and, then, it
is not possible to share the physical support with applications of telephonic type (analog voice in 0-
4 KHz band). The SHDSL trasmission typology is particularly innovative; in fact, it is possible to
reach, for the same performance and bit rates, distances greater than the traditional DSL systems,
decreasing furthermore the noises present on the phone cable.
The real performances of the system depend on the characteristics of the twisted pair in terms of
diameter, length and noise.
The SHDSL signal can be subjected to the degradation factors pointed out in the following:
• non linearity of the line frequency;
• crosstalk between the pairs twisted in the same cable;
• impulsive noise due to other services (traditional telephony) carried by other pairs on the
same cable;
• micro-interruptions due to mechanical stresses.
2.2 ALYSEO 106 TERMINAL
2.2.1 Main characteristics
The Alyseo 106 terminal is of NTU (Network Terminal Unit) type, user termination also called
“remote equipment”. It is destinated to be connected, by means of twisted pair, to interfaces
realized with the same SHDSL technology, present in central units of DSLAM type. The Alyseo
106 is compatible with DSLAM Alcatel (model A7300, release 4.2), Marconi (model AXH600,
release 3.1), Siemens (ExpressLink 3.0) and Lucent (Stinger model).

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
2-2 Overview
Alyseo 106 User Manual
720041008-A0-GB Issue 4
2.2.2 SHDSL Port
The physical connection can be configured as reported in chapter 4. Typically, these parameters
are set by the service provider and must not be changed. When DSLAM, on central side, manages
the configuration of some parameters through the EOC channel, the parameters set by the user
are overwritten. Through the same EOC channel, it is possible to monitor the status of the remote
terminal from the exchange side in terms of Noise Margin, attenuation and line and to display
information about the type and the version of the connected terminal.
In case of dedicated connection between two Alyseo devices, one device must be programmed as
CP and the other as CO and all the other parameters can be selected by the user.
Enabling the Power Backoff automatically reduces the power transmitted on line over the network
port, if a line attenuation lower than a predefined threshold is automatically detected, with the
purpose to reduce the crosstalk effect in the cable. In any case, the device performances are not
reduced.
2.2.3 ATM Termination
The Alyseo 106 terminal, in the interworking applications between ATM networks and Frame
Relay, is a device that realizes the access to the ATM transport network, implementing an ATM
user interface, according to ATM Forum normative UNI 3.1 and 4.0. The device supports up to 100
contemporaneous ATM connections of PVC type (+1 for remote control). The connections can be
configured in independent way.
The service class of UBR, UBR+, VBR-rt and CBR type are supported, whose following
parameters can be configured:
Service class Priority Maximum band Minimum ensured band Ensured Burst
CBR 0 PCR PCR -
VBR-rt 1 PCR SCR MBS (to PCR)
UBR+ 2 PCR MCR -
UBR 2 PCR - -
The diagnostics at ATM level is realized by means of the management of the OAM signalling with
particular reference to F4 and F5 flows of AIS, RDI and loopback type, in compliance with the ITU-
T I.610 normative. Both ‘end to end’ and ‘segment’ types of stream are supported.
The ATM connections on the SHDSL interfaces are subjected to static Connection Admission
Control (CAC), whose maximum available band must be defined according to the following
formula:
andAvailableBMCRPCRPCR
iUBRVBRiCBRi
≤





++ ∑∑∑
+
The available band can be configured between 0 and 2304 kbit/s (maximum DSL band) for the
IWF modality and between 0 and 1920 kbit/s (maximum available band on E1 interface foreseen
by G.804) for the CF modality.
The CAC can be disabled by the user.

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
Overview 2-3
Alyseo 106 User Manual
720041008-A0-GB Issue 4
The user traffic is encapsulated, according to RFC2684, on AAL5 of ATM operating in compliance
with the ITU-T I.363.5 and ITU-T I.361 normatives.
In the ‘cell forwarding’ applications, the Alyseo 106 terminals realizes an ATM NNI interface, able
to switch the ATM cells between E1 G.703 and SHDSL interfaces. The ATM stream on user side
is mapped on the G.704 frame in compliance with the G.804 recommendation.
Up to 100 crossconnections of VC and VP type are supported.
Figure 2-1 Cell Forwarding modality
2.2.4 Frame Relay Port
The Frame relay port can be selected between V.35 interface or G.703 interface. The port
supports up to 100 contemporary PVC connections. Each connection is characterized, in totally
independent way from the other ones, by the number of DLCI’s, by the traffic parameters and
according the service class as follows.
The CIR, Be and Bc traffic parameters are used for DLCI to determine the policing of the incoming
traffic. The interval for the measurement of the traffic is calculated according to the formula
T=Bc/CIR; the frames that exceed the CIR within the interval are marked by bit DE=1, otherwise
they are forwarded. The frames that exceed the Bc+Be value within the T interval are discarded
because they exceed the band assigned for the connection.
The Frame Relay port has a management level realized with the LMI procedures according to
Annex A or Annex D and CISCO standard, configurable as unidirectional DCE side or DTE side or
bidirectional, selecting the different timers and polling intervals foreseen by the normatives. The
function can be disabled.
2.2.4.1 V.35 interface
If the V.35 is selected as physical interface, it is possible to program the clock direction and the
nx64 bitrate with n within 1 and 36.
Application
ATM
G.804
G.704
G.703
Application
ATM
SHDSL
Cell Forwarding
VP/VC Xconnect
A
lyseo

Alyseo 106
 SELTA S.p.A. All rights reserved. No parts of this document can be reproduced, memorized into archive system or transmitted
in any shape or through any means without the previous authorization of SELTA S.p.A.
2-4 Overview
Alyseo 106 User Manual
720041008-A0-GB Issue 4
2.2.4.2 G.703 interface
Selecting the G.703 port, the physical band of the Frame Relay stream can be selected
programming a proper number of Time Slots on an E1 frame (nx64 with n within 1 and 31 in
framed modality). The 2048Kbit/s band is available programming the not framed modality.
2.2.5 Interworking
The available interworking applications, according to what indicated by Frame Relay Forum, are
the Service Interworking (SIW) in compliance with FRF.8 and Network Interworking (NIW) in
compliance with FRF.5.
The Service Interworking allows the connection of a Frame Relay device with an ATM device. The
Network Interworking allows the connection of a Frame Relay device with another Frame Relay
device.
For both the SIW and NIW functions, the mapping modalities of the traffic parameters from Frame
Relay side (DE and FECN) to ATM side (CLP and EFCN) and viceversa can be configured,
according to what foreseen by the normatives. Refer to 4.5.2.10.4 for the configuration details.
2.2.5.1 Service interworking
The management of the connections in case of SIW Frame Relay-ATM is realized by the LIV (Link
Integrity Verification) function, foreseen by FRF.8, which allows to transfer the information carried
by LMI protocol on frame relay side, in particular the DLCI status (active or inactive) towards ATM
side mapping the information on OAM F5 cells of AIS or RDI type.
The Service Interworking Function can operate both in transparent modality and in translated
modality. In transparent modality, no protocol adjustment is made and the Frame Relay header is
removed in transmission towards ATM and reconstructed in reception. In translated modality, an
encapsulation is realized, which depends on the carried payload and is in compliance with
RFC2684 recommendation.
Figure 2-2 Encapsulation of protocols in Service Interworking modality
(translated or transparent modality)
Application*
Q.922
Core
V.35/G.703
DTE
Application*
Null SSCS
CPCS
SAR
Q.922
Core
ATM
V.35/G.703 SHDSL
Alyseo
ATM ATM
SHDSL ANY phy
DSLAM
Application*
Null SSCS
CPCS
SAR
ATM
ANY phy
DTE