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Aastra CORDLESS PHONE Installation Planning

Other manuals for CORDLESS PHONE: Installation Instructions Manual

Summary of CORDLESS PHONE

  • Page 1

    Installation planning installation planning 5/1531-anf 901 14 d3 2013 11 28 cordless phone m wenzel mwenzel tero silvennoinen.

  • Page 2

    C ordless p hone 2 5/1531-anf 901 14 uen d3 2013-11-28 copyright © copyright aastra technologies limited, 2013. All rights reserved. Disclaimer no part of this material may be reproduced in any form without the written permission of the copyright owner. The contents of this document are subject to r...

  • Page 3: General

    5/1531-anf 901 14 uen d3 2013-11-28 3 g eneral 1 general 1.1 scope this installation planning document will give an explanation of how different factors influence on the size of the mx-one cordless phone system and how acceptable values can be given to these factors. The factors that determine the f...

  • Page 4: 1.2 System

    C ordless p hone 4 5/1531-anf 901 14 uen d3 2013-11-28 introduction to the synchronization ring in cordless phone installation instruction. • system can use one external pstn timing source, recommended, or use a free running mgu/2 to synchronize the master elu31 board, thus with ring in index4_mode ...

  • Page 5: Location

    5/1531-anf 901 14 uen d3 2013-11-28 5 g eneral figure 1: architecture of a mx-one cordless phone system pcm synchronization in the picture above is distributed in the synchroni- zation ring. This puts some requirement on the configuration. • all boards in the ring must be elu31/4 with switch set to ...

  • Page 6: Limitations In The System

    C ordless p hone 6 5/1531-anf 901 14 uen d3 2013-11-28 trsp_synchronization, all ring member boards shall be given same class and priority. Ring master board shall have class ‘no’, prio ‘no’. • all involved media gateway must be equipped with mgu boards. 2 limitations in the system 2.1 seamless hand...

  • Page 7: 2.3 Base

    5/1531-anf 901 14 uen d3 2013-11-28 7 l imitations in the system elu31 boards in a 4 subracks gateway. In a 3u box bfd 761 42/x the number of elu31 boards is limited to 1 due to power consumption. Elu31/1 is a phased-out product and is service stopped. It is not recom- mended to use elu31/1 elu31/2 ...

  • Page 8: 2.4 Portables

    C ordless p hone 8 5/1531-anf 901 14 uen d3 2013-11-28 2.4 portables the maximum number of portables that can be located/present in one lim is limited by the software to 1000. Note: these numbers represent the maximum possible number of portables. The number of portables that should be initiated or ...

  • Page 9: 2.6

    5/1531-anf 901 14 uen d3 2013-11-28 9 l imitations in the system 2.6 an mx-one with remote gws figure 2: example of an mx-one exchange with a main site and remote sites which, from the synchronization point of view, are independent from each other. Synchronization between the gateways within each si...

  • Page 10: Base Station Planning

    C ordless p hone 10 5/1531-anf 901 14 uen d3 2013-11-28 3 base station planning 3.1 general a major task when planning a cordless phone system is to define the number of base stations required to cover an area to a satisfactory level. This section describes how base station planning can be made in o...

  • Page 11: 3.3

    5/1531-anf 901 14 uen d3 2013-11-28 11 b ase station planning stations connected to the same elu31 board. Thus one mx-one cord- less phone system typically consists of several location areas. Moving between location areas causes load on the system, and it is very impor- tant to plan the system in su...

  • Page 12: 3.4

    C ordless p hone 12 5/1531-anf 901 14 uen d3 2013-11-28 note: the bs370 base station is not for new delivery, product is in passive sustaining. For more information about transmission pattern see chapter 6 appendix b: radio base station signaling pattern on page 44. 3.4 total area coverage the base ...

  • Page 13

    5/1531-anf 901 14 uen d3 2013-11-28 13 b ase station planning figure 3: example of a minimum of roaming and hand over traffic. Elu31 has 32 b-channel configuration. 3.4.2 high call traffic configuration in this example there is double base station coverage such that more b-channels are available for...

  • Page 14

    C ordless p hone 14 5/1531-anf 901 14 uen d3 2013-11-28 figure 4: example of a high call configuration. Elu31 has 32 b-channel configuration. 3.4.3 maximum coverage configuration below the base stations are placed in such a way that they give a maximum of coverage in a low traffic environment. The d...

  • Page 15

    5/1531-anf 901 14 uen d3 2013-11-28 15 b ase station planning figure 5: example of maximum coverage configuration. Elu31 has 32 b-channel configuration. Figure 6: example of maximum coverage of one base station 3.4.4 redundancy configuration if especially high redundancy is required, base stations m...

  • Page 16: 3.5 Non-Standard

    C ordless p hone 16 5/1531-anf 901 14 uen d3 2013-11-28 figure 7: example of a redundancy configuration. Elu31 has 32 b-channel configuration. Consider also the hlr/ulr configuration also when planing for redun- dancy. Hlr should be placed in the server that controls the media gate- ways that partic...

  • Page 17: 3.6 Absorption

    5/1531-anf 901 14 uen d3 2013-11-28 17 b ase station planning in outdoor applications good coverage is usually required instead of capacity. Omnidirectional antennas can be used for large areas like parking places. Directional antennas can be used for example to cover large walking distances between...

  • Page 18

    C ordless p hone 18 5/1531-anf 901 14 uen d3 2013-11-28 location of the base stations and how they are connected to the mx-one. Base stations that cover the same or adjoining areas, should, when possible, be connected to the same elu31 board. When this is not possible, the base stations should be co...

  • Page 19: Entrance

    5/1531-anf 901 14 uen d3 2013-11-28 19 b ase station planning figure 9: example of a frequently visited area the picture above shows an example of a frequently visited area, for example, entrances & conference rooms, see figure 9 example of a frequently visited area on page 19. This configuration wi...

  • Page 20

    C ordless p hone 20 5/1531-anf 901 14 uen d3 2013-11-28 equipped with an extra antenna. In this example hand over is not possible between the two coverage areas. To get optimal performance the bs370 shall be placed in line of sight from the designated base station. Figure 10: coverage of the bs370 w...

  • Page 21: 3.9 Site

    5/1531-anf 901 14 uen d3 2013-11-28 21 b ase station planning figure 11: coverage of the bs370 with an extra antenna to connect with a host base station 3.9 site survey to satisfy the area coverage and the traffic demands, the site must be surveyed in order to determine the number of base stations n...

  • Page 22

    C ordless p hone 22 5/1531-anf 901 14 uen d3 2013-11-28 expanded la makes for less roaming and hand over load as well as less complex radio environment. Note: a new site survey should be made after physical changes in the location area, for example, added or removed walls affect the coverage from ne...

  • Page 23

    5/1531-anf 901 14 uen d3 2013-11-28 23 b ase station planning – determine the edge of the cell by means of the limit warning tone. Optionally use the site survey tool and verify the sound quality and/or the link information to define the typical cell size. – do the same in the opposite direction. • ...

  • Page 24

    C ordless p hone 24 5/1531-anf 901 14 uen d3 2013-11-28 – take into consideration that in free space, with antennas in upright position the coverage is greater horizontally than verti- cally. Although in normal office environments this effect is negligible due to the amount of reflections, it may st...

  • Page 25

    5/1531-anf 901 14 uen d3 2013-11-28 25 b ase station planning • plain, light or reinforced concrete, wood and plaster absorb and pass radio waves in different ways. • metal walls and large metal cabinet rows reflect all signals, resulting in a greatly reduced coverage in areas behind these objects. ...

  • Page 26

    C ordless p hone 26 5/1531-anf 901 14 uen d3 2013-11-28 3.9.3.2 ceilings and floors the difference between ceilings and floors compared to walls lies in the materials used. Concrete and reinforced concrete are the main materials and it is important to determine the level of coverage of a base statio...

  • Page 27

    5/1531-anf 901 14 uen d3 2013-11-28 27 b ase station planning 3.9.4.1 outdoors/car park coverage outdoors is usually not a problem since there are few or no obstacles. The base station location depends on the client and on the size of the area to be covered. If the client wishes to have as few base ...

  • Page 28

    C ordless p hone 28 5/1531-anf 901 14 uen d3 2013-11-28 3.9.4.4 maintenance shaft in larger buildings there is usually the requirement that coverage also be provided in maintenance rooms. The most common are the rooms for the lift and ventilation system. The lift maintenance room is often on the roo...

  • Page 29

    5/1531-anf 901 14 uen d3 2013-11-28 29 b ase station planning figure 15: time delay spread. The base station at corner a reaches the cordless phone at corner b by means of a direct signal (signal 1) and by means of a reflected indirect signal (signal 2). Generally there are many reflected signals re...

  • Page 30

    C ordless p hone 30 5/1531-anf 901 14 uen d3 2013-11-28 • although the signal strength is good there are frame errors. The frame error rate and signal strength can be measured with the port- able device. Check frame errors in both uplink (towards the base station) and downlink (towards the portable ...

  • Page 31: Traffic Capacity

    5/1531-anf 901 14 uen d3 2013-11-28 31 t raffic capacity 4 traffic capacity 4.1 general the traffic capacity of the mx-one cordless phone is mainly determined by the capacity of the elu31 board and of the mx-one and in excep- tional cases also of the base stations. The maximum number of elu31 boards...

  • Page 32: 4.2 Departmental

    C ordless p hone 32 5/1531-anf 901 14 uen d3 2013-11-28 4.2 departmental differences at sales department, purchase, technical support departments and the like, usually more traffic is generated than for instance at finance and administration departments. Consequently a higher traffic capacity is nee...

  • Page 33: 4.4

    5/1531-anf 901 14 uen d3 2013-11-28 33 t raffic capacity 4.4 utilization of base stations, elu31 boards and lim 4.4.1 b-channel traffic in a typical business environment a standard dimensioning value for traffic per portable is 0.2 e. This includes a solid safety margin - actual traffic is almost al...

  • Page 34

    C ordless p hone 34 5/1531-anf 901 14 uen d3 2013-11-28 table 5 number of portables (stationary users) per elu31 board (with 32 channels) table 6 number of portables (stationary users) per elu31 board per base station (with 32 channels) gos erlang (e) 0.05 0.10 0.15 0.20 0.25 0.5% 419 212 143 109 88...

  • Page 35

    5/1531-anf 901 14 uen d3 2013-11-28 35 t raffic capacity table 7 number of portables (highly mobile users) per elu31 board with 32 channels table 8 number of portables (highly mobile users) per elu31 board, (with 32 channels), per base station. Note: for highly mobile users the most important limita...

  • Page 36

    C ordless p hone 36 5/1531-anf 901 14 uen d3 2013-11-28 table 10 number of portables (stationary users) per elu31 board per base station (with 16 channels) gos e number of base stations 1 2 3 4 5 6 7 8 pps per 0.5 0.05 57/57 114/57 165/55 165/41 165/33 165/27 165/23 165/20 elu31/ 0.5 0.10 30/30 60/3...

  • Page 37

    5/1531-anf 901 14 uen d3 2013-11-28 37 t raffic capacity table 11 number of portables (highly mobile users) per elu31 board with 16 channels table 12 number of portables (highly mobile users) per elu31 board, (with 16 channels), per base station. Note: for highly mobile users the most important limi...

  • Page 38

    C ordless p hone 38 5/1531-anf 901 14 uen d3 2013-11-28 it is desirable to have many base stations per board, as long as there are channels available, in order to increase the location area and reduce the signalling. For low user densities (less than 4 users per 100 m 2 ), the available channels per...

  • Page 39: Appendix A: Multiple Dect

    5/1531-anf 901 14 uen d3 2013-11-28 39 a ppendix a: m ultiple dect system the load from one inter media gateway hand over, that is, between two media gateways controlled by different telephony servers, is on the order of 1/2 of a call. The load from one hand over between elu31 boards in the same med...

  • Page 40: 5.2

    C ordless p hone 40 5/1531-anf 901 14 uen d3 2013-11-28 figure 16:system with three on-going traffic. 5.2 continuous base station broadcast (dummy bearer) a base station continuously transmits one or two, depending on imple- mentation, so called dummy bearer when idle (i.E. When no calls or data are...

  • Page 41: 5.3

    5/1531-anf 901 14 uen d3 2013-11-28 41 a ppendix a: m ultiple dect system 5.3 single vs. Multiple base station system in this section we differentiate single (residential) and multiple (enter- prise) base station systems. The reason is that it should be understood that they work in similar way but t...

  • Page 42: 5.5

    C ordless p hone 42 5/1531-anf 901 14 uen d3 2013-11-28 call traffic and/or high user density, the interference will be noticeable not only to the system itself but also to the users. The user will randomly experience very short and disturbing periods of silence or clicks. Also dropped and/or unansw...

  • Page 43: 5.6 Planning

    5/1531-anf 901 14 uen d3 2013-11-28 43 a ppendix a: m ultiple dect system if the dynamically channels selection algorithms in the different systems are not tuned well, clicks, cracks, disturbances and dropped calls as well as blocked calls will be the result. If the algorithms are well tuned the use...

  • Page 44: Signaling Pattern

    C ordless p hone 44 5/1531-anf 901 14 uen d3 2013-11-28 6 appendix b: radio base station signaling pattern illustration of transmission patterns for different base stations. 6.1 bs332 figure 17: shows antenna pattern for bs330 external dipole with bs332 external dipole. Illustration of transmitting ...

  • Page 45: 6.2 Bs330

    5/1531-anf 901 14 uen d3 2013-11-28 45 a ppendix b: r adio base station signaling pattern 6.2 bs330 figure 18: measured antenna pattern for antenna 1, vertical and horizontal. Same pattern for antenna 2, but 90 degrees shifted..

  • Page 46: 6.3 Bs340

    C ordless p hone 46 5/1531-anf 901 14 uen d3 2013-11-28 6.3 bs340 figure 19: bs340-ant1 vertical polarization. Figure 20: bs340-ant1 horizontal polarization..

  • Page 47

    5/1531-anf 901 14 uen d3 2013-11-28 47 a ppendix b: r adio base station signaling pattern figure 21: bs340-ant2 vertical polarization. Figure 22: bs340-ant2 horizontal polarization..

  • Page 48: 6.4 Non

    C ordless p hone 48 5/1531-anf 901 14 uen d3 2013-11-28 6.4 non standard antennas see figure 23 transmission pattern of base station bs340 with non-stan- dard antennas on page 48 illustrates the different transmission patterns of the omnidirectional antenna (ntm/krenb 101 119/1) and the direc- tiona...

  • Page 49

    5/1531-anf 901 14 uen d3 2013-11-28 49 a ppendix b: r adio base station signaling pattern figure 24:transmission pattern of base station bs340 with non-standard antenna.