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The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Aastra shall have no liability for any error or damage of any kind resulting from the use of this document.
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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 final configuration of a system are: •...
All boards on the ring must be of the same ‘type’, ELU31/4 index_4_mode or a combination of ELU31/4 index_3_mode and ELU31/3. System Overview Below is an architectural overview over an MX-ONE cordless phone system with integrated DECT. 5/1531-ANF 901 14 Uen D3 2013-11-28...
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Location Area Portables 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 index_4_mode.
All involved media gateway must be equipped with MGU boards. Limitations in the system Seamless Hand over In order to secure cordless phone functionality, the MX-ONE system must be synchronized to the reference timing source Synchronization between all ELU31 boards in the system are handled by a ring structure.
4.1.1 BS370, not for new delivery. on page 31 For configuration and upgrading of the Base station BS370, see installa- tion instructions for CORDLESS PHONE. CORE base station is service stopped, not recommended to use. 5/1531-ANF 901 14 Uen D3 2013-11-28...
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1700 metres, this cable length is valid for BS330 and BS340 and 0.6 mm cable with 1 EPP. For more details about requirements on the cable see installation instruction CORDLESS PHONE. For other cable dimen- sions and other base station, see installation instructions for CORD- LESS PHONE.
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IMITATIONS IN THE SYSTEM An MX-ONE with remote GWs Main site Remote site Coverage Coverage Media gateway1 area area Media gateway 5 network Router Media gateway 2 Media gateway 6 Media gateway 3 Remote site Coverage Media gateway 7 area Media gateway 4 Router network...
Base station planning 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 order to gain full area coverage.
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(vapor, gas, liquids) or extreme dusts (industrial plants). Consequences of the base station type used The following three base station types can be used in the cordless phone system: • BS330 base stations with a slightly directional antenna pattern.
ORDLESS HONE 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. Total area coverage The base station coverage depends on the following factors: •...
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ASE STATION PLANNING Top floor Base Base Base Base station station station station 3:rd floor Base Base Base Base station station station station 2:nd floor Base Base Base Base station station station station Ground floor Base Base Base Base station station station station...
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ORDLESS HONE High traffic zone, 2 base stations connected to same ELU31 placed next to each other. Base Base Top floor Base Base station station station station Media Gateway 3:rd floor Base Base Base Base station station station station 2:nd floor Base Base Base...
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ASE STATION PLANNING Top floor Base Base station station 3:rd floor Base Base station station 2:nd floor Base Base station station Ground floor Base Base station station Media Gateway 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...
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ORDLESS HONE Top floor Base Base Base Base station station station station 3:rd floor Base Base Base Base Media station station station station Gateway 2:nd floor Base Base Base Base station station station station Ground floor Base Base Base Base station station station...
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 buildings. For outdoor placing of base stations, a special protection case is available for wall or pole mounting.
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ORDLESS HONE 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 connected to ELU31 boards in the same Media Gateway.
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ASE STATION PLANNING Base Base station station Entrance Media Gateway Base Base station station 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.
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ORDLESS HONE 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 without extra antenna 5/1531-ANF 901 14 Uen D3 2013-11-28...
ASE STATION PLANNING Note: That between these areas is no coverage. Hand over not possible. Roaming will work but PP will drop out of system and be unavailable until it register in the next covered area. Figure 11: Coverage of the BS370 with an extra antenna to connect with a host base station Site survey To satisfy the area coverage and the traffic demands, the site must be...
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ORDLESS HONE 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 nearby base stations, or open up a pass way thus creating possibility for new movement patterns.
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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. •...
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ORDLESS HONE – 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 still be worth trying to place base stations horizontally in order to get more vertical coverage in, for example, stair ways.
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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.
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ORDLESS HONE 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 station on the floor above and below.
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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 stations as possible installed outside (because of the costs of the outdoor housing), it is possible to install one or more base stations with the antennas in front of a window.
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ORDLESS HONE 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 roof or in the basement.
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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 reaching the cordless phone.
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ORDLESS HONE • 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 device). For information on how to measure the frame error rate, see the user guide for the site survey tool.
RAFFIC CAPACITY Traffic capacity 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 in a media gateway see section 2.2 ELU31 Boards on page 6.
ORDLESS HONE 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 needed in these areas, those requiring more base station per user. Traffic capacity of a base station The number of available speech channels between the base station and the ELU31 board is 8.
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RAFFIC CAPACITY 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 always lower. The tables below show the maximum number of portables that can be handled by an ELU31 board and the resulting number of portables per base station depending on number of base stations that are connected to a single ELU31 board.
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ORDLESS HONE Table 5 Number of portables (stationary users) per ELU31 board (with 32 channels) Erlang (E) 0.05 0.10 0.15 0.20 0.25 0.5% 1.0% 2.0% Table 6 Number of portables (stationary users) per ELU31 board per base station (with 32 channels) number of base stations PPs per 0.05...
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RAFFIC CAPACITY Table 7 Number of portables (highly mobile users) per ELU31 board with 32 channels Erlang (E) 0.05 0.10 0.15 0.20 0.25 0.5% 1.0% 2.0% Table 8 Number of portables (highly mobile users) per ELU31 board, (with 32 channels), per base station. number of base stations PPs per 0.05...
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ORDLESS HONE Table 10 Number of portables (stationary users) per ELU31 board per base station (with 16 channels) number of base stations PPs per 0.05 57/57 114/57 165/55 165/41 165/33 165/27 165/23 165/20 ELU31/ 0.10 30/30 60/30 84/28 84/21 84/16 84/14 84/12 84/10...
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RAFFIC CAPACITY Table 11 Number of portables (highly mobile users) per ELU31 board with 16 channels Erlang (E) 0.05 0.10 0.15 0.20 0.25 0.5% 1.0% 2.0% Table 12 Number of portables (highly mobile users) per ELU31 board, (with 16 channels), per base station. number of base stations PPs per 0.05...
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ORDLESS HONE 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 ), the available channels per base station may be more than what is needed to support the portables in the coverage area of the base station.
A: M DECT PPENDIX ULTIPLE 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 Media Gateway is also on the order of 1/2 of a call.
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ORDLESS HONE Figure 16:System with three on-going traffic. 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 transmitted to or from the base station). The reason for continuously transmitting the dummy bearer is due to that the portable device listens to one dummy bearer and uses the information to lock-on to the system;...
A: M DECT PPENDIX ULTIPLE SYSTEM 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 that they are designed to be used for different purposes.
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ORDLESS HONE 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 unanswered voice calls may be the result.
A: M DECT PPENDIX ULTIPLE 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 user experience will not be as critical, however the radio capacity will still be lower.
ORDLESS HONE Appendix B: Radio base station signaling pattern Illustration of transmission patterns for different base stations. BS332 BS330 BS332 Figure 17: Shows antenna pattern for BS330 external dipole with BS332 external dipole. Illustration of transmitting patterns are valid for both antennas. 5/1531-ANF 901 14 Uen D3 2013-11-28...
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B: R PPENDIX ADIO BASE STATION SIGNALING PATTERN BS330 Figure 18: Measured antenna pattern for antenna 1, vertical and horizontal. Same pattern for antenna 2, but 90 degrees shifted. 5/1531-ANF 901 14 Uen D3 2013-11-28...
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B: R PPENDIX ADIO BASE STATION SIGNALING PATTERN Figure 21: BS340-ant2 Vertical Polarization. Figure 22: BS340-ant2 Horizontal Polarization. 5/1531-ANF 901 14 Uen D3 2013-11-28...
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ORDLESS HONE 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- tional antenna (NTM/KRENB 101 121/1). See figure 24 Transmission pattern of base station BS340 with non-standard antenna on page 49 illustrates the different transmission patterns of the directional single antenna (NTM/KRENB 101 118/1).
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B: R PPENDIX ADIO BASE STATION SIGNALING PATTERN Figure 24:Transmission pattern of base station BS340 with non-standard antenna 5/1531-ANF 901 14 Uen D3 2013-11-28...
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