SpectraLink 84 Series Instruction Manual

1725-86973-000 Rev: C
June 2014
Spectralink 84-Series Wireless Telephone
Barcode Administration Guide

Spectralink 84-Series Wireless Telephones Barcode Administration Guide
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Copyright Notice
© 2012-2014 Spectralink Corporation All rights reserved. SpectralinkTM, the Spectralink logo and the
names and marks associated with Spectralink’s products are trademarks and/or service marks of
Spectralink Corporation and are common law marks in the United States and various other countries. All
other trademarks are property of their respective owners. No portion hereof may be reproduced or
transmitted in any form or by any means, for any purpose other than the recipient’s personal use, without
the express written permission of Spectralink.
All rights reserved under the International and pan-American Copyright Conventions. No part of this
manual, or the software described herein, may be reproduced or transmitted in any form or by any
means, or translated into another language or format, in whole or in part, without the express written
permission of Spectralink Corporation.
Do not remove (or allow any third party to remove) any product identification, copyright or other notices.
Notice
Spectralink Corporation has prepared this document for use by Spectralink personnel and customers.
The drawings and specifications contained herein are the property of Spectralink and shall be neither
reproduced in whole or in part without the prior written approval of Spectralink, nor be implied to grant any
license to make, use, or sell equipment manufactured in accordance herewith.
Spectralink reserves the right to make changes in specifications and other information contained in this
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whether any such changes have been made.
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INCLUDING BUT NOT LIMITED TO STATEMENTS REGARDING CAPACITY, RESPONSE-TIME
PERFORMANCE, SUITABILITY FOR USE, OR PERFORMANCE OF PRODUCTS DESCRIBED
HEREIN SHALL BE DEEMED TO BE A WARRANTY BY SPECTRALINK FOR ANY PURPOSE, OR
GIVE RISE TO ANY LIABILITY OF SPECTRALINK WHATSOEVER.
Warranty
The Product Warranty and Software License and Warranty and other support documents are available at
http://support.spectralink.com.
Contact Information
US Location European Location
800-775-5330 [phone]
Spectralink Corporation Spectralink Europe ApS
2560 55th Street Langmarksvej 34
Boulder, CO 80301 8700 Horsens, Denmark
[e-mail] [e-mail]

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Contents
Introduction...................................................................... 5
Product Support ............................................................................................................... 5
Spectralink References .................................................................................................... 5
Barcode Reference........................................................................................................... 5
Conventions Used In This Document.............................................................................. 6
Icons ............................................................................................................................... 6
Typography..................................................................................................................... 7
Chapter 1: Understanding Barcode Technology......................... 8
1D vs. 2D Formats............................................................................................................. 8
8450 and 1D Barcode Patterns ....................................................................................... 8
8452/8453 and 2D Barcode Patterns............................................................................... 8
Chapter 2: Barcode Applications .......................................... 10
Using On-board Applications..........................................................................................10
Using the Quick Barcode Connector™ (QBC) ...............................................................10
Supported Symbologies..................................................................................................10
Special Alerts for Barcode Applications........................................................................11
Chapter 3: Barcode Implementation....................................... 13
Conflicting Symbologies.................................................................................................15
Chapter 4: Barcode Parameters............................................ 16
Administration Parameters.............................................................................................16
Symbology Parameters...................................................................................................18
Aztec..............................................................................................................................18
Codabar .........................................................................................................................19
Code 11 .........................................................................................................................21
Code 39 .........................................................................................................................23
Code 93 .........................................................................................................................26
Code 128........................................................................................................................27
Datamatrix......................................................................................................................31
EAN / UPC.....................................................................................................................31
GS1 Composite..............................................................................................................34
GS1 Databar..................................................................................................................34
Interleaved 2 of 5............................................................................................................35
Micro PDF 417...............................................................................................................37
MSI Code.......................................................................................................................38

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PDF 417.........................................................................................................................40
Plessey Code.................................................................................................................40
QR Code........................................................................................................................42
Standard 2 of 5...............................................................................................................42
Telepen..........................................................................................................................43
Appendix A: Open Source Information ................................... 46
OFFER for Source for GPL and LGPL Software ............................................................46
Contact Information for Requesting Source Code...........................................................46

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Introduction
This is your guide to understanding how barcode technology works in conjunction with the
Spectralink 8450/8452/8453 handsets and how to deploy it in your facility.
Refer to this document when you need to configure your handsets for a barcode application or
when you need to change a barcode configuration due to advances or changes in the
technology.
Be aware that this is a living document. Barcode technology changes rapidly and this document
makes every effort to keep up. If you have questions, please contact your Spectralink service
provider.
Product Support
Spectralink wants you to have a successful installation. If you have questions please contact the
Customer Support Hotline at 1-800-775-5330.
The hotline is open Monday through Friday, 6 a.m. to 6 p.m. Mountain time.
For Technical Support: mailto:[e-mail]
For Knowledge Base:
http://support.spectralink.com/SpectralinkService/support/us/support/voice/wi-
fi/spectralink_8400_wireless.html
For Return Material Authorization: mailto:[e-mail]
Spectralink References
All Spectralink documents are available at http://support.spectralink.com. Use the Documents
and Downloads pane and select Voice as the Product Type and then select the Spectralink
84-Series Wireless Telephone from the page. For other documents, use the navigation pane on
the left to locate the product and open the page.
Specific Documents
The Spectralink 84-Series Wireless Telephone Administration Guide provides a comprehensive
list of every parameter available on Spectralink 84-Series Wireless Telephones.
Spectralink 84-Series Wireless Telephone Deployment Guide This document introduces
deployment concepts and the methods of provisioning the 84-Series handsets in any type of
facility. It is the fundamental text and a prerequisite to this Administration Guide, especially for
administrators who are new to the Spectralink 84-Series handsets or who may wish a refresher
course.

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Quick Barcode Connector Administration Guide Provides instruction for implementation of the
barcode application. The Spectralink 84-Series User Guide contains information about using the
barcode feature.
The Spectralink 84-Series User Guide offers comprehensive instructions on using each of the
features deployed on the handsets.
Barcode Reference
The Bar Code Book: A Comprehensive Guide to Reading, Printing, Specifying, Evaluating, and
Using Bar Code and Other Machine-Readable Symbols by Roger C. Palmer, Fifth Edition
The book describes the many different forms of 1-D and 2-D bar code symbols, explains how
they work, compares their attributes, and provides detailed reference information. Equipment
used for printing, reading, and evaluating bar code symbols is reviewed, and extensive
information is provided about the applicable industry standards. The emerging fields of Direct
Part Marking and image-based scanning is reviewed, and the issue of patents is presented.
Many applications of the technology are described.
Conventions Used In This Document
Icons
Icons indicate extra information about nearby text.
Caution
The Caution icon highlights information you need to know to avoid a hazard that
could potentially impact device performance, application functionality, successful
feature configuration and/or affect handset or network performance.
Admin Tip
This tip advises the administrator of a smarter, more productive or alternative
method of performing an administrator-level task or procedure.
Settings
The Settings icon highlights information to help you zero in on settings you need to
choose for a specific behavior, to enable a specific feature, or access
customization options.

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Typography
A few typographic conventions, listed next, are used in this guide to distinguish types of in-text
information.
Convention
Description
Bold
Highlights interface items such as menus, soft keys, file names, and
directories. Also used to represent menu selections and text entry to the
handset.
Italics
Used to emphasize text, to show example values or inputs, and to show
titles of reference documents available from the Spectralink Support Web
site and other reference sites.
Underlined blue
Used for URL links to external Web pages or documents. If you click on
text in this style, you will be linked to an external document or Web page.
Bright orange text
Used for cross references to other sections within this document. If you
click on text in this style, you will be taken to another part of this
document.
Fixed-width-font
Used for code fragments and parameter names.
This guide also uses a few writing conventions to distinguish conditional information.
Convention
Description
<MACaddress>
Indicates that you must enter information specific to your installation,
handset, or network. For example, when you see <MACaddress>, enter
your handset’s 12-digit MAC address. If you see <installed-directory>,
enter the path to your installation directory.
>
Indicates that you need to select an item from a menu. For example,
Settings > Basic indicates that you need to select Basic from the
Settings menu.

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Chapter 1: Understanding Barcode
Technology
Barcode technology enables you to encode and decode information stored in a variety of visual
patterns. Barcode patterns can store a variety of data. Currently, the Spectralink 8450 handset
supports a wide range of one-dimensional (1D) and stacked 1D barcode types, including the
Code 128 barcode symbology, which can contain up to 70 numerals and/or characters. The
Spectralink 8452/8453 handset supports a wide range of two-dimensional (2D) barcode types.
Two-dimensional barcode symbologies typically encode more data, which may be contained in
a smaller barcode label, as compared with 1D barcode symbologies. The Spectralink 8450 can
only decode 1D barcode symbologies, whereas the Spectralink 8452/8453 can decode both 1D
and 2D barcode label formats. The Spectralink 8452/8453 can also decode composite
barcodes that contain both a 1D and a 2D barcode component, such as the GS1 Composite
CC-A/B symbology often found on drug packaging.
1D vs. 2D Formats
8450 and 1D Barcode Patterns
Barcode patterns can store a variety of data. Currently, your Spectralink 8450 handset supports
a wide range of one-dimensional (1D) and stacked ID barcode types, including the Code 128
barcode symbology, which can contain up to 70 numerals and/or characters.
1D example (Code 128 symbology)
8452/8453 and 2D Barcode Patterns
Your Spectralink 8452/8453 handset supports a wide range of two-dimensional (2D) barcode
types. Two-dimensional barcode symbologies typically encode more data, which may be
contained in a smaller barcode label, as compared with 1D barcode symbologies. The
Spectralink 8452/8453 can decode both 1D and 2D barcode label formats, as well as composite
1D/2D barcodes.

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2D example (QR Code symbology)

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Chapter 2: Barcode Applications
Barcode information is typically entered into a field in an application that processes the data.
This application might be running:
in the web browser on the handset
on a computer that is linked to a Spectralink 845x handset via QBC.
Using On-board Applications
The first item is a web application running on the web browser on the handset. The scanned
information is used by the web application and either populates an input field on the page or is
used by code in the web page to continue a work flow.
Using the Quick Barcode Connector™ (QBC)
The second item is an application that is running on a computer accessible to the user that has
been loaded with the Quick Barcode Connector application. QBC enables you to capture
barcode data using a Spectralink 8450 or 8452/8453 handset and transfer the data to the
application running on the computer associated with the scanning handset. You can think of it
as a wireless barcode scanner connected to the computer.
For more information, see the Quick Barcode Connector (QBC) Administration Guide.
Caution: Required settings for QBC
Several settings MUST be set to their default value to ensure correct
interoperability between the handset and QBC:
barcode.preambleTransmissionValue (default Null)
barcode.postambleTransmissionValue (default Null)
barcode.symbologyIdTransmission (default 0)
See the explanation of these parameters in Administration Parameters.

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Supported Symbologies
All of the symbologies listed here are enabled by default except GS1 Composite.
Symbology
1D
2D
Aztec
X
Codabar
X
X
Code11
X
X
Code 39
X
X
Code 93
X
X
Code 128*†
X
X
DataMatrix
X
X
EAN / UPC†
X
X
GS1 Composite*†
X
X
GS1 DataBar
X
X
Interleaved 2 of 5*
X
X
Micro PDF 417
X
MSI Code
X
X
PDF 417
X
Plessey Code
X
X
QR Code
X
Standard 2 of 5
X
X
Telepen
X
X
* Some parameters apply only to 1D or 2D.
†This symbology has conflicts with other symbologies or internally. Please see the section
Conflicting Symbologies for explanation.
Note: Symbologies available by default on 84- and 87- Series handsets
All symbologies covered in this document (except for GS1 Composite) are available
on both the 84- and 87-Series handsets and are enabled by default. The 84 Series
can be additionally configured through the .cfg files. The 87-Series is not further
configurable for barcode symbologies and therefore only the default settings can be
deployed as of this writing.

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Special Alerts for Barcode Applications
You can assign special alerts, ringtones and vibrations for certain events. The Spectralink
84-Series User Guide contains instruction on how to set ring types for different conditions.

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Chapter 3: Barcode Implementation
Implementation of barcode parameters requires that you include your symbology parameters in
the configuration (.cfg) files that you prepare for your facility. If you are using one of the
templates included with the software, common barcodes are enabled by default.
Configuration flexibility allows you to structure the files according to the most efficient method
for your facility. See the Spectralink 84-Series Deployment Guide for a full explanation of .cfg
files and how they are structured. Double check the site.cfg file to determine if the barcode you
want to deploy is enabled.
Parameters are assigned by:
Site –parameters that apply to the entire deployment such as network, log-in, DHCP,
etc.
Group –parameters that apply to a limited number of users such as nurses or sales
departments.
User –parameters that apply to specific users such as extension and username.
The first essential factor in determining how to configure the parameters is whether all
8450/8452/8453 handsets will be using the same barcode symbology/symbologies or if specific
groups will need certain symbologies that conflict with the symbologies used by another group.
See the section below for information on conflicting symbologies.
Admin Tip: Recommended configuration
Although barcode parameters can be included almost anywhere in the .cfg file
structure, the recommendations given here conform to the standard configurations
as given in the Spectralink 84-Series Deployment Guide. Following these
guidelines will make your installation easier to administer and support.
One of these three types of configurations is recommended.
If different and conflicting barcode symbologies are deployed, the conflicting parameters
should be assigned to a group or groups and included in each group’s .cfg file.
If all barcode symbologies are the same for all handsets and no conflicting symbologies
are required, the parameters are best deployed site-wide in the site.cfg file or in a
separate barcode.cfg file that all handsets reference through the 00000000000.cfg file.
In rare instances, parameters should be included in the user file. For instance if only one
user requires a certain symbology that conflicts with the symbologies used in the rest of
the facility, that specific handset can be configured with the unique symbology.
If conflicting symbologies are in use and group .cfg files cannot be used, you must include
the barcode parameters in each user profile .cfg file.

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These recommendations align with the three Scenarios described in the Deployment Guide:
Group
Deployment
Site.cfg
(may include barcode parameters)
<macaddress>.cfg
- site.cfg
- [Group].cfg
- <identity>. cfg
[Group]
(includes barcode parameters)
(one file for each phone)
[user].cfg
(may include barcode parameters)
Flat
Deployment
Site.cfg
(may include barcode parameters)
00000000000.cfg
- site.cfg
- barcode.cfg
- <macaddress>-ext.cfg
Barcode.cfg
(or)
(one file for each phone)
<macaddress>-ext.cfg
(may include barcode parameters)
User Profiles
Site.cfg
(may include barcode parameters)
00000000000.cfg
- site.cfg
(one file for each user)
[User Profile]
(may include barcode parameters)
Settings: The barcode.cfg file
All barcode parameters are included in the barcode.cfg template. You can use this
file to customize barcode parameters for your facility by either including it
wholesale as in Flat Deployment or by copying and pasting the symbologies you
want to deploy into another .cfg file.
As you can see from the above graphic, any .cfg file could contain the barcode parameters.
Your primary concerns should be accuracy of deployment and ease of maintenance. Therefore,
the general parameters should be included in the site.cfg file unless:
you are using the barcode.cfg file as shown as an option in the Flat Deployment
scenario
you must deploy conflicting parameters in which case you would put the symbologies in
a [Group] or [user] file.

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Conflicting Symbologies
Caution
Certain symbologies are mutually exclusive. If you use the barcode.cfg file, ensure
that you disable the symbologies that you do not want to deploy. If you deploy
conflicting symbologies, ensure that they are segregated by [Group] or by [User].
The GS1 Composite symbology and the EAN/UPC symbology can conflict with each
other.
This is due to the fact that some GS1 Composite variants (e.g. CC-A/B) contain a 2D barcode
and a UPC or EAN barcode. If you are trying to scan such a barcode and you have EAN/UPC
enabled, the barcode scanner may only return the EAN/UPC data and not the 2D portion of the
composite barcode.
ISBT 128 and Code 128 conflict with each other.
ISBT 128 consists of a Code 128 barcode with special data ID information prepended to the
barcode data. If read as an ISBT 128 barcode, the scanner can correctly interpret this special
data ID information. If read as a Code 128 barcode, the scanner will mistake the special data ID
information as just part of the barcode data. For this reason, the configuration parameters
enforce that they can’t both be activated. (See
barcode.symbology.symbology128Type.selection)

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Chapter 4: Barcode Parameters
Barcode parameters must be set to correctly scan the symbologies encountered so that the
information passed to application programs (either internal web applications or to the PC via
QBC) contains the barcode data information the programs expected. For QBC, the barcode
parameters set in the provisioning server files must match the type of barcode input requested
by the application program for a successful implementation of barcoding.
Barcode parameter groups are listed here in alphabetical order. Most symbologies are enabled
by default.
Administration Parameters
Parameter
Permitted Values
Default
Interpretation
barcode.
aimingBeamDuration
0 to 2550,
milliseconds
500 or
400
The aiming beam duration.
The default for the Spectralink 8450 is 500. The default
for the Spectralink 8452/8453 is 400.
barcode.
aimingBeamMode
0 to 2
0
The aiming beam mode. If the aiming beam is turned
on, the scanner will turn on the aiming beam for the
barcode.aimingBeamDuration before attempting to
decode a barcode. This allows a user to more
accurately aim the scanner, ensuring accurate
scanning of a particular barcode when many barcodes
are close together. Enabling this will cause the
minimum time to scan a barcode to increase by the
barcode.aimingBeamDuration. NOTE: Changing this
value from will significantly change the user’s barcode
scanning experience, so be sure to enlist your user’s
help in determining their preferred method.
The supported values are:
•0 = typical aimer
•1 = one button press aim and read
•2 = first button press aim, second button press read
barcode.
centerDecodingActivation
0 or 1
0 or 1
A flag to determine if center decoding activation is
enabled. Center Decoding causes the scanner to only
attempt to decode barcodes at, or near the center of
the scan area.
If 0, center decoding activation is disabled
(default for the Spectralink 8450).
If 1, center decoding activation is enabled (default for
the Spectralink 8452/8453). The
barcode.centerDecodingTolerance parameter is used.

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Parameter
Permitted Values
Default
Interpretation
barcode.
centerDecodingTolerance
0 to 100
00 or 10
The center decoding tolerance. The larger the value,
the further from the center the barcode can be and
still be decoded. A low value is useful when there is a
high density of barcodes. A high value allows the
scanner to more quickly acquire and read a barcode.
The default for the Spectralink 8450 is 00. The default
for the Spectralink 8452/8453 is 10.
barcode.
postambleTransmissionValue
Hex string
1-20 bytes of 00-FF
or Null
Null
The postamble transmission value.
If defined, this value is appended to the barcode data
scanned. (e.g. [barcode data][postamble])
If the QBC application is used, this parameter MUST be
set to Null. Note that the QBC application allows
configuration of a postamble that it will append to the
barcode data.
Note that all of the optional transmitted data is
inserted in the following order if configured:
[preamble][symbologyID][barcode data][postamble]
barcode.
preambleTransmissionValue
Hex string
1-20 bytes of 00-FF
or Null
Null
The preamble transmission value.
If defined, this value is prepended to the barcode data
scanned. ([preamble][barcode data])
If the Quick Barcode Connector (QBC) application is
used, this parameter MUST be set to Null. Note that
the QBC application allows configuration of a
preamble that it will prepend to the barcode data.
Note that all of the optional transmitted data is
inserted in the following order if configured:
[preamble][symbologyID][barcode data][postamble]
barcode.symbologyId
Transmission
0 to 2
0
Determines whether the AIM symbology ID is
transmitted. The symbology ID is a code that uniquely
identifies each barcode symbology type.
If non-zero, the Symbology ID is sent just before the
barcode data. ([symbologyID][barcode data])
If the QBC application is used, this parameter MUST be
set to Null.
The supported values are:
•0 = disable transmission
•2 = AIM Identifier
Note that all of the optional transmitted data is
inserted in the following order if configured:
[preamble][symbologyID][barcode data][postamble]
AIM identifiers are 3 characters, starting with a “]”.
The second character is the AIM symbology ID
character, and the third character is the Processing

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Parameter
Permitted Values
Default
Interpretation
option. Thus, for example, the AIM for an Aztec
barcode is “]z0”. The symbology ID and processing
option characters for all supported symbologies are:
Symbology
Symbology ID
Processing option
Aztec
z
0
Codabar
F
0,1,2 or 4
Code 11
H
0,1 or 3
Code 39
A
0,1,3,4,5 or 7
Code 93/93i
G
0,1-9,A-Z,or a-m
Datamatrix
d
1
EAN/UPC (standard lengths)
E
0,3 or 4
EAN/UPC (other lengths with no check digit)
X
0
EAN/UPC linear components
E
0,1,2,3 or 4
GS1 Composite
e
0,1,2 or 3
GS1 Databar
e
0
Interleaved 2 of 5
I
0,1 or 3
MSI Code
M
0 or 1
PDF417/MicroPDF
L
0,3,4 or 5
Plessey Code
P
0
QR Code
Q
0 or 1
Standard 2 of 5 (2 start/stop bars)
R
0,1 or 3
Standard 2 of 5 (3 start/stop bars)
S
0
Telepen
B
0 or 1
barcode.
illuminationLevel
(2D only)
0 to 100
50
The illumination level of the background rectangular
LED. 50% gives good overall performance. Higher
values might give better performance in very low light
environments but will have an impact on battery life in
heavy scanning situations.
Only available for 8452/8453.
Symbology Parameters
Aztec
(2D only)
Aztec
Parameter
Permitted Values
Default
Interpretation
barcode.symbology.
aztec.
enabled
0 or 1
1
A flag to determine whether or not Aztec symbology is
enabled.
Aztec is a two-dimensional matrix style symbology
which can encode around 3000 character using entire

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Aztec
Parameter
Permitted Values
Default
Interpretation
256-byte ASCII character set. This symbology is only
available on the Spectralink 8452/8453 handset.
barcode.symbology.
aztec.
structureAppendMode
0 or 1
0
A flag to determine whether or not structure append
mode is enabled.
If set to 1, the Aztec structured append header is used
instead of ECI.
barcode.symbology.
aztec.
GS1-128Emulation
0 or 1
0
A flag to determine whether or not GS1-128 Emulation
is enabled.
Codabar
Codabar
Parameter
Permitted Values
Default
Interpretation
barcode.symbology.
codabar.
enabled
0 or 1
1
A flag to determine whether or not Codabar symbology
is enabled.
Codabar is a self-checking, discrete numerical
symbology. It has a 16 character set and is used in
blood banks, libraries and certain express parcel
applications.
barcode.symbology.
codabar.
checkDigitTransmission
0 or 1
0
A flag to determine whether or not the check digit is
transmitted for Codabar. The supported values are:
•0 = check digit not transmitted
•1 = check digit transmitted
barcode.symbology.
codabar.
checkDigitVerification
0 or 1
0
A flag to determine whether or not to enable check
digit verification for Codabar.
barcode.symbology.
codabar.
clsi
0 or 1
0
The CLSI library system. The CLSI library system for
Codabar inserts spaces after characters 1, 5, and 10 in
the 14-character label. Start/stop characters can be
transmitted or not transmitted as required. This system
is used by some libraries in the USA.
The support values are:
•0 = not active
•1 = active (insert spaces)
barcode.symbology.
codabar.
concatenation
0 to 2
0
Two adjacent Codabar codes scanned in a single sweep
can be concatenated and sent as a single message.
Codabar concatenation is applied according to the
concatenation mode selected in barcode. symbology.
codabar. concatenationMode.

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Codabar
Parameter
Permitted Values
Default
Interpretation
The supported values are:
•0 = not active
•1 = transmitted concatenated code only
•2 = transmit all codes (single and concatenated)
barcode.symbology.
codabar.
concatenationMode
0 to 2
0
Concatenation is applied differently depending on the
concatenation mode. There are 3 different modes:
•No restrictions
Concatenates all adjacent codes, intermediate
start/stop characters are not transmitted.
•First code stop character = second code start
character
Only concatenates adjacent codes if the first code stop
character is the same as the second code start
character (C123456A + A123456D = 123456123456 or
C123456123456D if start/stop characters are
transmitted).
•American Blood Commission (ABC)
Only concatenates adjacent codes if the stop character
of the first code = D and the start character of the
second code = D (C123456D + D123456A =
123456123456 or C123456123456A if start/stop
characters are transmitted).
The supported values are:
•0 = no restrictions
•1 = first code stop = second code start
•2 American Blood Commission (ABC)
barcode.symbology.
codabar.
lengthMode
0 to 2
0
Length 1 (L1), Length 2 (L2) and Length 3 (L3) are used
differently depending on the length mode. There are
three length modes:
•L1 as minimum length
Codes with as many characters as specified by L1 and
longer are read. L2 and L3 are not used.
•L1, L2, and L3 as three fixed lengths
Only codes that comply with the lengths specified by
L1, L2 and L3 will be read.
•L1 as minimum length, L2 as maximum length
The supported values are:
•0 = L1 as minimum length
•1 = L1, L2, L3 as fixed lengths
• 2 = L1 as minimum length, L2 as maximum length