Alcatel Voice over WLAN (R1.1.1) Guide

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
ESD/ Central Pre Sales / DF/ JM 1/34 June 2005 – Ed 01
Pre-Sales Communication
Voice over WLAN (R1.1.1) Design Guide
June 2005
All rights reserved © 2004, Alcatel

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
1. Introduction & Objectives .....................................................................................................4
1.1. Operational Components .............................................................................................4
1.1.1. OmniPCX Enterprise Applications Specific Elements ................................................4
1.1.2. VoWLAN Infrastructure (SVP Server)........................................................................4
1.1.3. WLAN Infrastructure (Provided by Alcatel NIBU) ......................................................5
1.1.4. Server Elements (DHCP, TFTP, Management) ..........................................................6
1.1.4.1..DHCP Server 6
1.1.4.2..TFTP Server 7
1.1.4.3..RF Director Management 7
1.1.5. Mobile IP Touch Terminals.....................................................................................8
1.1.6. Terminal Options (Chargers, Clips, Pouches)..........................................................8
2. Operational Modes and Considerations..............................................................................11
2.1. Infrastructure Topology Options ..................................................................................11
2.1.1. Direct Mode (Direct-Attach)..................................................................................11
2.1.2. Appliance/Overlay Mode ....................................................................................12
2.1.2.1..Appliance /Overlay Mode Operation 12
2.2. Quality of Service .......................................................................................................13
2.3. Security ......................................................................................................................14
2.3.1. SSID Broadcast ...................................................................................................14
2.3.2. Authentication & Encryption .................................................................................15
2.3.3. MAC Address Filtering.........................................................................................15
2.3.4. Rogue Activity Detection.......................................................................................15
2.3.5. Isolation Practices................................................................................................16
2.3.6. Layer 3 & 4 Filtering (ACL & Packet Inspection) .....................................................16
2.3.7. Auxiliary Security Measures ..................................................................................16
3. Design Process for VoWLAN ...............................................................................................16
3.1. Pre Sale Data Collection .............................................................................................16
3.1.1. Physical Diagram (to include existing wireless technologies)...................................16
3.1.2. Logical Diagram .................................................................................................17
3.1.3. Floor Level Maps/Diagrams.................................................................................18
3.1.4. Customer Specific Application & Design Considerations ........................................19
3.1.4.1..Feature Restrictions (R1.1.1) 19
3.1.4.2..MIPT Offer Restrictions (R1.1.1) 20
3.1.4.3..Converged Wireless Environments 22
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Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
3.2. Predictive Environment Solution Options (Responding to RFx) ........................................24
3.2.1. Manual Calculation of Predictive Coverage ..........................................................24
3.2.2. Predictive Tool Coverage Planning .......................................................................25
4. Environment Verification & Validation .................................................................................25
4.1. Compliance with (R 1.1.1 Offer)..................................................................................25
4.1.1. Exceptional Deal Handling ..................................................................................26
4.2. Pre Install VoWLAN Radio Coverage Audit (Site Survey) ................................................26
4.3. Post Install Survey .......................................................................................................26
5. Design Examples ...............................................................................................................27
5.1. Configuration for up to 4 AP (Demo or small area coverage)........................................27
5.2. Configuration for up to 16 AP (No redundancy) ...........................................................28
5.3. Configuration for up to 16 AP (with redundancy)..........................................................29
6. Quotes & Orders ...............................................................................................................29
7. References.........................................................................................................................30
8. Annex ...............................................................................................................................31
8.1. Site Survey Tool ..........................................................................................................31
8.2. Call Handling ............................................................................................................32
8.3. IP Flows .....................................................................................................................33
8.4. MIPT Gatekeeper IP address in DHCP mode ................................................................34
Figure 1: Direct Mode (WLAN Switch) .........................................................................................11
Figure 2 OmniSwitch 6600-P24 (supporting IEEE 802.3af) ..........................................................13
Figure 3 QOS on WLAN solution ...............................................................................................14
Figure 4 Physical Diagram .........................................................................................................17
Figure 5 IP Addressing Plan .......................................................................................................18
Figure 6 Logical paths for Voice and Data ..................................................................................18
Figure 7: Floor Map (with scale & legend)...................................................................................19
Figure 8 MIPT to MIPT inter-nodes communication via IP ............................................................21
Figure 9 User Throughput (type of Wall) for 802.11g ..................................................................24
Figure 10 Predictive Method: AP Calculation...............................................................................25
Figure 11 Configuration for up to 4 AP (no redundancy) .............................................................27
Figure 12 Configuration for up to 16 AP (no redundancy) ...........................................................28
Figure 13 Configuration for up to 16 AP (with redundancy) .........................................................29
Figure 14 Survey Result..............................................................................................................31
ESD/ Central Pre Sales / DF/ JM 3/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
1. Introduction & Objectives
It is the intent of this guide to aid Sales Engineers in designing and selling telecommunications solutions
Incorporating Alcatel’s Mobile IP Touch (MIPT) Voice over Wireless LAN (VoWLAN) solution (R 1.1.1)
This document has been created specifically in the context of an architectural and technical Pre-Sales Design
Guide approach. It is clearly understood that a client’s choice of solution components and design options
will take into account many factors that will not be explored here (such as financial considerations,
deployment constraints, and business process limitations).
Alcatel’s MIPT VoWLAN product offering is a multi-stage solution aimed at meeting customer demand for
converged voice and data wireless environments based on 802.11 technologies. The R1.1.1 version of the
MIPT suite is the result of leveraging existing OmniPCX Enterprise features with OEM products available in the
Alcatel portfolio from Aruba, SpectraLink and others.
Technically speaking, the VoWLAN solution can be built on several centralized WLAN topology schemes but
must always adhere to the Voice over WLAN MIPT solution R 1.1.1 operational design restrictions (For more
information on design restrictions, see: section 3.1.4.2 of this document and the ALCATEL OmniPCX Enterprise
R6.1 Standard Offer document).
1.1. Operational Components
The Alcatel MIPT VoWLAN solution offer is comprised of many subcomponents. These components can be
easily grouped into their categories defined by their functions and responsibilities.
1.1.1. OmniPCX Enterprise Applications Specific Elements
At the core of Alcatel’s MIPT VoWLAN offer lays the
Alcatel OmniPCX Enterprise platform (r6.1 or greater,
r6.1.1 or greater preferred.)
Key to enabling the capabilities of Alcatel’s VoWLAN
solution are two OXE features, Remote Extension and
integrated H.323 client support (via the embedded
H.323 gateway.)
1.1.2. VoWLAN Infrastructure (SVP Server)
SVP Server:
Responsible for synchronizing MIPT terminal
communication flows and managing Access Point
saturation to provide strong QoS; this is an essential
MIPT VoWLAN element.
ESD/ Central Pre Sales / DF/ JM 4/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
1.1.3. WLAN Infrastructure (Provided by Alcatel NIBU)
OmniAccess 4304:
Used to support a maximum of 4 AP. Equipped with
eight 10/100 Ethernet ports (802.3af capable). Two
different models providing either one 1000base-T
Gigabit uplink (Copper) or one 1000base-SX Gigabit
uplink (Fiber).
OmniAccess 4304
OmniAccess 4308:
Used to support a maximum of 16 AP. Equipped with
eight 10/100 Ethernet ports (802.3af capable). Two
different models providing either one 1000base-T
Gigabit uplink (Copper) or one 1000base-SX Gigabit
uplink (Fiber). Imbedded Stateful Inspection firewall
options allow for robust security installations.
OmniAccess 4324:
Used to support a maximum of 48 AP. Equipped with
twenty-four 10/100 Ethernet ports and two GBIC
uplink modules for flexible LAN applications.
Imbedded Stateful Inspection firewall options allow for
robust security solutions.
OmniAccess 6000:
Four slot modular chassis used to support a maximum
of 512 AP. Equipped with up to seventy-two 10/100
Ethernet ports and six GBIC uplink modules for f
LAN applications. Imbedded Stateful Inspectio
firewall options allow for robust security solutions.
lexible
n
OmniAccess 60/61:
Single network (802.11a or 802.11b/g) Wi-Fi Access
Points for use with OmniAccess WLAN controllers.
WLAN 60 model requires external special purpose
antenna (WLAN 61 offers only internal antenna
option.)
OmniAccess 4308
OmniAccess 4324
OmniAccess 6000
OmniAccess 60 & 61
ESD/ Central Pre Sales / DF/ JM 5/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
OmniAccess 70
Flexible multifunction Access Point provides
simultaneous access to both 802.11a and 802.11b/g
networks. Supports built-in and external special
purpose antenna.
OmniAccess 70
Alcatel openly recognizes the challenges faced by customers with existing 802.11 network implementations.
For this reason, Alcatel also seeks to support Mobile IP Touch - Voice over Wireless Local Area Network
solutions on a variety of approved third-party infrastructure architectures. Infrastructure vendors such as
Aruba, Cisco (former Airespace product suite), Colubris and D-Link can possibly be used in lieu of Alcatel’s
OmniAccess WLAN products. Solutions leveraging third-party Wi-Fi infrastructures (such as those previously
mentioned) must be reviewed and approved by Alcatel’s Bid Desk (SDP) for applicability and support.
1.1.4. Server Elements (DHCP, TFTP, Management)
1.1.4.1. DHCP Server
Customers have two IP address allocation schemes to choose from for MIPT handsets, static mode and
dynamic mode. Static mode operation is very simple and requires no expanded explanation. Terminals are
simply programmed manually with IP addresses, subnet mask, default gateway, TFTP server, H.323
gatekeeper and SVP Server information. Optionally, MIPT Terminals can be configured in a dynamic mode
via standard DHCP server options.
Dynamic mode is recommended due to ease of use and speed of reconfiguration. For a number of reasons,
the DHCP Server function can not currently be hosted by the OmniPCX or SVP Server. A dedicated external
DHCP server is recommended for all MIPT VoWLAN solutions. Alcatel does not currently offer the DHCP
Server hardware platform and recommends the customers or business partners source this equipment from
their usual PC Server supplier.
Alcatel has validated the following DHCP Server software platforms for use with MIPT VoWLAN solutions.
Validated DHCP Server software platforms.
Windows 2000 (Server) DHCP turbo by Weird Solutions
Important remark: In addition to standard and common parameters (IP Address, Subnet Mask, Default Gateway
IP Address, TFTP Server IP Address), the external DHCP server must be able to provide the MIPT
terminal with the IP addresses of the SVP Server and H.323 Gatekeeper. This makes the
optional DHCP fields for “Vendor Specific Options” mandatory for use with MIPT handsets. For
Windows 2000 Server, the Vendor Specific Option fields are known as “Special Option N°151”
(for the SVP Server) and “Special Option N°154” (for the H.323 Gatekeeper).
ESD/ Central Pre Sales / DF/ JM 6/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
1.1.4.2. TFTP Server
A TFTP Server is mandatory for all MIPT VoWLAN solutions. The TFTP Server is responsible for supplying
Binary and Text configuration files to the MIPT handsets.
TFTP Server functions can not be hosted from the OmniPCX Enterprise Communication Server due to
performance, security and compatibility reasons. The SVP Server is not permitted to host TFTP Server
operations due to TCP port conflicts. This makes mandatory the use of an external TFTP Server. There are
no unique TFTP Server requirements beyond standard TFTP protocol specifications to support MIPT terminals.
It is possible to combine TFTP Server and DHCP Serer functions on a single external platform.
Alcatel has validated the following TFTP Server platforms for use with MIPT solutions.
Validated TFTP Server software platforms.
3Com TFTP Server (3CDaemon) V2.0r10 Cisco TFTP Server
TFTP turbo by Weird Solutions Solar Winds TFTP
1.1.4.3. RF Director Management
The initial goal of RF Spectrum Management is to configure and calibrate radio settings for the
wireless network. After the radio network is operational, the goal of RF Spectrum Management
changes to that of tuning and adjusting radio parameters in order to maintain a high degree of
performance. With Alcatel, RF Spectrum Management is largely automatic, requiring little
configuration or intervention from the administrator. Key components of Alcatel’s RF Director
solution are:
•Calibration: Used continuously throughout the life of a wireless network; Calibration functions
allow network administrators to optimize power and sensitivity settings of the network on an
antenna by antenna basis.
•Optimization:
oAuto Radio Resource Allocation: allows individual access points to monitor for RF
changes and, in conjunction with Calibration information, make appropriate channel
assignment changes.
oSelf Healing: In the event that an AP fails, surrounding APs can automatically increase
their transmit power level to fill in any gaps.
oLoad Balancing: ensures optimum performance by automatically spreading client
association in an equitable manner to avoid the premature saturation of a single AP.
•RF Monitoring:
oCoverage Hole Detection: Continuous monitoring of client data access and error rates
provides for the identification of coverage holes or areas of diminished service.
oInterference Detection: notifies network administrators when localized interference
becomes sufficient to cause performance degradation.
oEvent Threshold Configuration: provides the ability to configure event thresholds to notify
the administrator when certain RF parameters are exceeded.
•Wireless Intrusion Detection: can identify and defeat a wide assortment of DoS attacks
aimed at Wi-Fi networks.
ESD/ Central Pre Sales / DF/ JM 7/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
1.1.5. Mobile IP Touch Terminals
Alcatel makes two MIPT models available, one each for office and industrial use. The performance of these
two handsets is very similar but their designs and options are focused for use in specific environments. Both
of these terminals are products of an OEM partnership between Alcatel and Spectralink.
For office environments Alcatel proposes the MIPT 300.
Dimensions : 5.5” x 2.0” x 0.9” (14 x 5.1 x 2.3 cm)
Weight: 4.2 ounces (119 grams)
For industrial environments (manufacturing facilities,
warehouses, and other harsh environments) Alcatel proposes
the MIPT 600 with special “Push-to-talk” function.
Dimensions : 5.9” x 2.2” x 1.0” (15 x 5,6 x 2,5 cm)
Weight: 6.0 ounces (170,1 grams)
Both terminals employ a standard 12 button keypad (0-9, *, #).
Four soft keys are supplied on MIPT handsets:
•Menu key: access to phone features
•Function key: access to a customization menu
•Navigation keys (Qty-2): selection keys for menu navigation.
The Ni-MH battery supplied with MIPT handsets is capable of
operating for 4 hours of talk time and supporting 80 hours of
standby operation.
1.1.6. Terminal Options (Chargers, Clips, Pouches)
To complement Alcatel’s MIPT handsets offerings, Alcatel includes in its catalogue a list of optional
components for use directly with the MIPT 300 and MIPT 600.
Clothing/Belt Clips:
The MIPT 300 and MIPT 600 each have an option for a
model specific Clothing Clip.
Pouches: (MIPT 600 only)
For handset protection and ease of transport, the MIPT 600
can be equipped with one of two optional pouches (with or
without keypad cover.)
ESD/ Central Pre Sales / DF/ JM 8/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
Swivel Clip for MIPT 300:
Offering easy removal of battery, interchangeable clips for
simple attachment to clothing.
Charging Stands:
The MIPT 300 and MIPT 600 each have an option for a
model specific Charging Stand. (For instance when ordering
from Actis, “the MIPT 300/600 Pack” provides the selected
MIPT set + the Charging Stand)
MIPT Charger Plug:
The MIPT 300/600 Charger Plug provides the AC-DC
transformer feeding the Charging Stand. The power plug is
country dependent.
Gang Charger: (MIPT 600 only)
To support multiple battery charging operations for MIPT 600
terminals, the four-port Gang Charger accepts batteries (not
terminals.)
Shown with two batteries.
Dual Charger Stand:
Available for MIPT 300 and for MIPT 600.
Charging priority provided first to the Phone Slot.
The spare battery starts charging when the phone battery is
fully charged.
ESD/ Central Pre Sales / DF/ JM 9/34 June 2005 – Ed 01

Design Guide for the Alcatel OmniPCX Enterprise – Mobile IP Touch
Configuration cradle:
One MIPT set configuration at a time
One slot per MIPT set type.
MIPT set configuration via Windows-PC (RS-232 serial
interface to PC).
Direct upload or download from/to the MIPT set flash
memory.
Store multiple configurations to support different user profiles
The cradle has 3 levels of device configuration (global or
individual).
Each level represents a particular configuration file that can
be loaded from or sent to a MIPT set.
System Level
Changes configuration parameters/settings common to all
phones. E.g., WEP/WPA Keys, SSIDs, Subnet Mask, etc.
Group Level
Changes configuration parameters/settings common to a
group of MIPT sets. Ex for MIPT 600: PTT (Push To Talk)
enable/disable or PTT channels.
Phone Level
Changes configuration parameters/settings unique to an
individual telephone. E.g., extension numbers, static IP
addresses, and/or ring tones.
Customizable Rings on MIPT 300 and 600:
Ring Tone, Ring Delay, Ring Cadence and Vibrate Cadence parameters can all be adjusted independently to
meet individual call notification preferences.
Ring Volume on MIPT 600
Ring Volume is adjustable only on the MIPT 600.
Icon Display on MIPT 300 & 600
Icons are available on the MIPT 300/600 display to indicate the present RF
Signal Strength and the Battery Power Level.
ESD/ Central Pre Sales / DF/ JM 10/34 June 2005 – Ed 01