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KWS1500
User Manual
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Polycom KWS1500 User Manual

KIRK Wireless Server 1500 Installation and Maintenance
Polycom
®
KIRK Wireless Server 1500
Installation and Maintenance Guide
72-1604-00, Issue B
KIRK Wireless Server 1500 Installation and Maintenance
Copyright © Polycom, Inc. All Rights Reserved
Catalog No: 72-1604-00, Issue B
Proprietary and Confidential
The information contained herein is the sole intellectual property of Polycom, Inc. No distribution, reproduction or unauthorized use of these materials is permitted without the expressed written consent of Polycom, Inc. Information contained herein is subject to change without notice and does not represent commitment of any type on the part of Polycom, Inc. Polycom and Accord are registered trademarks of Polycom, Inc.
Notice
While reasonable effort was made to ensure that the information in this document was complete and accurate at the time of printing, Polycom, Inc., cannot assume responsibility for any errors. Changes and/or corrections to the information contained in this document may be incorporated into future issues.
KIRK Wireless Server 1500 Installation and Maintenance
Table of Contents
1. 4 Introduction
1.1 4 Icons and Conventions
2. 5 Capacities and Specifications
2.1 5 Overview
5 Identification Numbers
2.2
7 KIRK Wireless Solution Diagram
2.3
3. 8 Radio Coverage and Physical Deployment
3.1 8 Radio Coverage Areas
8 Deployment
3.2
15 Measuring Radio Coverage
3.3
16 Using the Handset as a Signal Meter
3.4
17 Signal Meter Display
3.5
19 Completing the Site Survey
3.6
20 KIRK Radio Hardware
3.7
4. 25 KIRK Wireless Server 1500 Solution
4.1 25 Internal Hardware
29 Accessories
4.2
30 KIRK Programming Tools
4.3
5. 31 Installation of the KIRK Wireless Server 1500 Solution
5.1 31 Internal Hardware Installation
32 Construction and Installation
5.2
32 Opening the KWS1500
5.3
34 Installing a KIRK Expansion Board 1500
5.4
35 Installing KIRK Analog Interface Cards
5.5
36 Wiring Base Stations
5.6
37 Base Station and Repeater Installation
5.7
6. 41 Regulatory Notices
KIRK Wireless Server 1500 Installation and Maintenance
1. Introduction
This manual provides a complete discussion of the KIRK Wireless Server 1500. The purpose of this manual is to provide general and specific information relating to the deployment, physical installation, and tuning of the KIRK Wireless Server 1500, herein referred to as the KWS1500.
1.1 Icons and Conventions
This manual uses the following icons and conventions.
Caution! Follow these instructions carefully to avoid danger.
Note these instructions carefully.
KIRK Wireless Server 1500 Installation and Maintenance
2. Capacities and Specifications
2.1 Overview
A KIRK Wireless Solution, based on the KWS1500, is an adjunct solution for medium-to­large businesses with a need from anywhere between 1 and 128 handset users. The KIRK Expansion Board and the KIRK Link Card make it possible to expand the solution capacity to reach registration of up to 128 and 700 wireless users depending on the interface technology. The KWS1500 is deployed behind a new or existing host PBX telephone switch through analog station port connections provided by the host PBX.
A KIRK Wireless Solution consists of a KWS1500 operating in the Digital Enhanced Cordless Telecommunications (DECT) frequency band of 1.8GHz or 1.9GHz, and supports up to 16 KIRK Base Stations to deliver radio coverage for up to 64 KIRK Handsets.
To eliminate “blind spots” or to cover low traffic areas, KIRK Repeaters can be added to extend the radio coverage area of Base Stations. Up to six Repeaters can be connected per host Base Station (96 Repeaters total).
KIRK Base Stations
The Base Station is a compact device that contains radio frequency (RF) circuitry and radio antennas. The main function of the Base Station is to provide communication of audio and data signals between the mobile handsets and the KWS1500 Solution. Each KIRK Base Station supports four simultaneous voice conversations.
Up to three Base Stations may be placed adjacent to one another without causing channel interference. This provides the ability to support up to 12 simultaneous voice conversations in a given area. A fourth Base Station must be placed a minimum of 23 meters / 75 feet from a group of three Base Stations to avoid channel interference.
KIRK Repeaters
Repeaters extend the radio coverage of KIRK Base Stations by up to 50 percent. KIRK Repeaters do not require cabling to the KIRK Wireless Server or the host Base Station. Repeaters require local power and are synchronized to the host Base Station wirelessly.
A KIRK Repeater may only be synchronized to a single Base Station.
Handsets
The KIRK Handset is a lightweight, ergonomically designed wireless unit that includes a LCD display and keypad. The handset is compatible with the DECT Generic Access Profile (GAP) standard.
2.2 Identification Numbers
KIRK ARI number
The KIRK Access Rights Identity (ARI) number is an 11-digit number that specifically identifies the KIRK Solution. Each KWS1500 cabinet produces a unique ARI number that identifies it from any other KWS1500. The ARI number can be found on the back panel of the KWS1500 cabinet.
KIRK Wireless Server 1500 Installation and Maintenance
When using linked KWS1500s, the solution uses the ARI number from the KWS1500 assigned as the Master.
KIRK Handset IPEI number
Each KIRK Handset has a unique Equipment Production Identification number. This number uniquely identifies each handset. The KWS1500 assigns each handset to the solution by its International Portable Equipment Identity (IPEI) number, or serial number. The IPEI number is printed on the label inside the battery compartment. It is also available by dialing the feature code *99984* on the idle handset, and pressing the OK button.
The IPEI number is a 12-digit number. It appears on all KIRK handset equipment as follows:
00077 1234567
KIRK Wireless Server 1500 Installation and Maintenance
(
(
)
2.3 KIRK Wireless Solution Diagram
KIRK 1500 Solution KIRK 1500 Solution
Solo/Master)
Intermediate Distribution
Frames
Linked Slave
Programming Cable
Laptop PC
(Analog extension port required for each handset)
KIRK Base Station
KIRK Handset
KIRK Wireless Server 1500 Installation and Maintenance
3. Radio Coverage and Physical Deployment
3.1 Radio Coverage Areas
The deployment of Base Stations and Repeaters is a critical aspect of the KWS1500 Wireless Server. If the Wireless Server installation is to be successful, the deployment concepts explained here must be followed.
To determine the permanent installation location of Base Stations within a given installation, a site survey must be taken to discover the optimal location and total quantity of Base Stations required for the installation.
KIRK Base Stations provide a radio coverage radius of approximately 47 meters / 150 feet indoors or up to a 350-foot (106 meters) radius outdoors in direct line-of-sight conditions. However, it is extremely important to keep in mind that radio coverage is dependent on construction materials, method of construction and environment. These factors will always be involved in every installation. Therefore, it is not possible to relate one installation to another insofar as number of Base Stations or positioning of Base Stations. Each site is relatively unique.
While an extensive guide to effective RF coverage planning is outside the scope of this manual, the following points should be taken into consideration when planning the site, prior to installation.
Specifications listed reflect capacities of the KWS1500 solution when used in a
• The Base Station provides a typical coverage radius of 150 feet (46 m) in a typical
• The KWS1500 will support a maximum of 64 handsets per solution. .
• The KWS1500 supports a maximum of 16 Base Stations per solution, providing 64
• A maximum of two KWS1500 solutions may be linked together.
• Handsets can move between coverage areas of different Base Stations while receiving
• For efficient handoff of conversations between Base Stations, deploy multiple Base
• Avoid placing Base Stations near other electronic equipment, large machinery, etc.,
• Base Stations should be placed between 1,8 and 2,4 meters / 6 and 8 feet in height; if
Solo configuration unless otherwise designated.
indoor office environment, and up to a 350-foot (107 m) radius in an open area (line­of-sight), extending in all directions from the Base Station. The exact coverage range depends on the building architecture and materials.
RF speech channels.
continuous service and maintaining conversations in progress.
Stations with sufficient overlap of coverage between them (i.e. plan for some areas to be covered by more than one Base Station). Overlaps are necessary to allow handsets the time necessary to handoff to a Base Station with a stronger signal.
as the range can be severely affected.
they are placed any lower, persons walking around could interfere with the radio signal. Antennas should always be mounted in a vertical orientation utilizing the supplied mounting bracket. Coverage area can be adversely affected if the Base Stations is mounted improperly.
3.2 Deployment
It is important to keep in mind that the coverage area of the KWS1500 and any repeater is flexible and affected b outside objects. It should be noted that within the course of this
KIRK Wireless Server 1500 Installation and Maintenance
guide coverage areas are represented by abstract areas and bear no resemblance to the actual physical coverage area provided by the KWS1500.
Coverage Area Calculations
One Base Station: Coverage A = (π x r
2
)
Extending Radio Coverage with Repeaters
A KIRK Repeater is a useful tool for extending a Base Station’s coverage area. It is therefore ideal where extra coverage is required in a low traffic area.
KIRK Repeaters do not provide additional active speech channels to the KIRK Wireless Server. Instead, the Repeaters extend up to 2 simultaneous traffic channels of the host Base Station. Base Stations do not handover speech channels to the Repeater, therefore when a Wireless Handset is off hook using a Repeater channel, the associated base Station channel also remains in use. A Repeater only takes channels from a Base Station when there is active traffic on the Repeater.
KIRK Wireless Server 1500 Installation and Maintenance
Multi Cell Environment
In a multi cell environment, up to 3 Repeaters may be synchronized to a single Base Station to extend the radio coverage.
Jump Configuration
Repeaters may also be configured in a “jump” configuration. In this configuration the Repeater closest to the Base Station is the only Repeater in the chain that is synchronized to the Base Station. Subsequent Repeaters are synchronized to the previous Repeater in the chain.
Radio coverage overlap
Other factors involved in a deployment relate to radio coverage overlap. A coverage overlap occurs when the radio fields of multiple Base Stations overlap each other. Base Stations must be placed in such a way that the radio coverage from one Base Station to another overlaps by 9 to 14 meters / 30 to 45 feet. An overlap is required so that as the
KIRK Wireless Server 1500 Installation and Maintenance
handset moves about the various coverage zones Base Stations have time to hand the call off to another Base Station. .
If the overlap area is not enough (less than 9 to 14 meters / 30 to 45 feet), there is a risk of dropping the connection while moving from one coverage area to another. This is because of the time that the handset needs to scan for an alternative Base Station. However, too much overlap results in a wasted coverage area.
If the alternative Base Station is not found while crossing the overlap into another area, a channel handoff cannot take place and the connection to the solution will be dropped because the handset is now out-of-range.
KIRK Wireless Server 1500 Installation and Maintenance
Horizontal and vertical overlap
Base Stations are omni-directional, meaning RF signal is propagated vertically and horizontally from the Base Stations and Repeaters. Depending on building materials, the Base Station coverage area will typically extend to more than one floor of a structure. In the multi-zone building installation below, the coverage areas overlap horizontally, allowing the handset to roam the structure without interruption. The handsets will always try to acquire the Base Station with the strongest signal if there are channels available on the Base Station.
KIRK Wireless Server 1500 Installation and Maintenance
No overlap
In areas where two Base Stations are separated by steel doors, gates, elevators, stairwells, etc., the handset may not have time to register with the next Base Station, resulting in the call being dropped. This can be resolved by moving the Base Stations closer together, or by installing another Base Station near the obstruction.
If the overlap area is not enough (less than 9 to 14 / 30 to 45 feet), there is a risk of dropping the connection while moving from one coverage area to another. This is because of the time that the handset needs to scan for an alternative Base Station. Too much overlap results in a wasted coverage area, and too little results in dropped calls.
Small overlaps
In this example, two coverage areas meet at a perpendicular intersection such as a hallway or outside of a building corner. When moving around in the area where little or no overlap occurs, there is a chance the call may drop. This is because the handset does not have time to register with the second Base Station before the handset has exited the coverage area of the first Base Station. This can be solved by placing another Base Station or KIRK Repeater in the corner of the meeting corridors to provide extra coverage.
KIRK Wireless Server 1500 Installation and Maintenance
Many small overlaps
Be aware that many small overlaps in the same area can create problems if a handset can only identify two Base Stations. For example, if the handset is located in such an area and it is moved in a given direction, the alternative Base Station chosen may be different than the Base Station towards which the handset is traveling. This situation can cause a dropped call.
The best solution is to place a Base Station in the middle of the area where there is merging radio coverage.
Coverage hot spots
Each Base Station supports four simultaneous conversations. In some applications, more channels are needed in a dense area. To support these installation requirements, up to three Base Stations can be placed in the same general area to provide extra traffic capability. This area is referred to as a “hot spot.” Hot spots are generally used in common areas of a building that will require more traffic channels than a single Base Station can supply.
Base Stations must be separated by at least 4 to 9 meters / 15 to 30 feet to
avoid conflicts. If a fourth Base Station is required in a high traffic area, to prevent interference it must be placed at least 22 meters / 75 feet away, if a direct line of sight exists between the fourth Base Station and the group of three.
KIRK Wireless Server 1500 Installation and Maintenance
Shadows
Be aware that “shadows” created by parts of the building can cause spots where no radio signals are able to penetrate. If a Base Station is mounted on a concrete or steel pillar, or even mounted near steel shelves, shadow areas may occur. This should be resolved by placing extra Base Stations near the shadow areas.
Firewalls/doors, metal siding or linings, etc., might create these shadows.
Weather conditions and seasons of the year
Different weather conditions can have an influence regarding radio coverage. For example, rain, dense fog, a wet or icy roof or wall, can act as an RF shield.
Different seasons of the year can also have an influence regarding radio coverage. For example, the growth of leaves on trees in the spring that were not present when the solution was installed in the winter might affect the radio coverage of Base Stations or Repeaters.
3.3 Measuring Radio Coverage
The radio coverage provided by Base Stations and Repeaters is related in two separate but equally important values. These two values are referred to as the Q-value, and the Radio Signal Strength Indicator, or RSSI. The KIRK Handset can be used as a signal meter for measuring these values.
Q-value
The Q-value is a relative expression for the bit failure rate in the communication between the Base Stations and the handset. The highest possible Q-value is 64; at this value there is a very low bit failure rate and should provide excellent speech quality.
As the wireless handset roams the coverage area, the Q-value will
change. When the wireless handset registers a Q-value of 52 (12 bit failures measured), the wireless handset will request a handover to an alternative Base Station or Repeater or eventually to another channel, frequency or timeslot. Be aware that the information in the display is only updated once per second meaning that the number of bit failure can be lower or higher than indicated in the display. Therefore it is important to accept that as soon as significant fluctuation of the Q-value occurs the end of the radio coverage has been reached.
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