Panasonic Kx Taw848 Installation Manual

2.6 Connection of Extensions
Installation Manual 71
2.6.2 Parallel Connection of the Extensions
Any SLT can be connected in parallel with an APT as follows:
Note
In addition to an SLT, an answering machine, a fax machine or a modem (PC) can be connected in 
parallel with an APT.
To a Hybrid Port
4-conductor wiring cord
Connect pins T, R, D1,
and D2.2-conductor wiring cord
Connect pins T and R.
SLT APTModular
T-Adaptor 

2.7 Connection of 2.4 GHz Portable Stations
72 Installation Manual
2.7 Connection of 2.4 GHz Portable Stations
2.7.1 Overview
The following equipment is required to connect the wireless system:
CS: Cell Station (KX-T0141)
This unit determines the area covered by the wireless system. Up to 2 calls can be made at the same time 
through each CS.
PS: 2.4 GHz Portable Station (KX-TD7680/KX-TD7690)
The KX-TAW848 can support up to 28 PSs. For more details about the PS, refer to the PS Operating 
Instructions....

2.7 Connection of 2.4 GHz Portable Stations
Installation Manual 73
2.7.2 Procedure Overview
When connecting the wireless system, use extreme care in conducting the site survey. An incorrectly 
performed site survey can result in poor service area, frequent noise, and disconnection of calls.
1. Investigate the installation site
Refer to 2.7.3 Site Planning.
a.Obtain a map of the CS installation site.
b.Identify the service area required by the user on the map.
c.Plan the location of each CS, taking...

2.7 Connection of 2.4 GHz Portable Stations
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4. Finish the site survey
Refer to 2.7.6 After Site Survey.
a.Return all DIP switches of each CS to the OFF position, and stop supplying power.
b.Turn off the PS.
5. Connect the CS and PS to the PBX and test the operation
Refer to 2.7.7 Connecting a Cell Station to the PBX.
a.Connect the CSs to the PBX.
b.Register the PSs to the PBX.
c.Walk around the service area while having a conversation using a registered PS. If noise is 
frequent or...

2.7 Connection of 2.4 GHz Portable Stations
Installation Manual 75
2.7.3 Site Planning
Choosing the best site for the CS requires careful planning and testing of essential areas. The best location 
may not always be convenient for installation. Read the following information before installing the unit.
Understanding the Radio Waves
Characteristics of Radio Waves
The transmission of radio waves and the CS coverage area depend on the structure and materials of the 
building.
Office equipment, such as...

2.7 Connection of 2.4 GHz Portable Stations
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Object Material Transmission Tendency
Wall Concrete The thicker they are, the less radio waves penetrate them.
Ferroconcrete Radio waves can penetrate them, but the more iron there is, 
the more radio waves are reflected.
Window Glass Radio waves usually penetrate them.
Glass with wire net Radio waves can penetrate them, but tend to be reflected.
Glass covered with 
heat-resistant filmRadio waves are weakened considerably when they...

2.7 Connection of 2.4 GHz Portable Stations
Installation Manual 77
CS Coverage Area
The example below shows the size of the coverage area of 1 CS if it is installed in an area with no obstacles.
Note
Radio signal strength levels are measured during the site survey (refer to 2.7.5 Site Survey).
Site Survey Preparation
1.Obtain a map and investigate the installation site.
a.Check the obstacles (e.g., shelves, columns, and partitions).
b.Check the materials of the structures (e.g., metal, concrete, and...

2.7 Connection of 2.4 GHz Portable Stations
78 Installation Manual
one CS becomes weak. However, if a PS moves away from a CS and there are no CSs available 
for handover, the PS may go out of range and the call could be lost.
If the signal from the CS fades, due to the structure of the building, there may be some handover 
delay. The user will hear a range warning before handover in this case. This also applies in the case 
of interference from 2.4 GHz apparatus.
Example: Installing in a Room Separated...

2.7 Connection of 2.4 GHz Portable Stations
Installation Manual 79
2.7.4 Before Site Survey
Setting and Installing the CS Temporarily for Site Survey
1.Switch the Radio Signal Test switch from OFF to ON.
2.Set the CS number switches as desired.
Note
If more than 1 CS is in Radio Signal Test mode, each CS must have a unique CS number.
CS Number Switch
CS no. 1 CS no. 2 CS no. 3 CS no. 4 CS no. 5 CS no. 6 CS no. 7 CS no. 8 CS no. 9
1
2
3
41
2
3
41
2
3
41
2
3
41
2
3
41
2
3
41
2
3
41
2
3
41
2
3
4
DIP Switch...

2.7 Connection of 2.4 GHz Portable Stations
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3.After setting the DIP switch, connect an AC adaptor or battery box to the CS using a power supply 
adaptor.
Note
The AC adaptor should be connected to a vertically oriented or floor-mounted AC outlet. Do not connect 
the AC adaptor to a ceiling-mounted AC outlet, as the weight of the adaptor may cause it to become 
disconnected.
4.Install the CS temporarily for the site survey. Install the CS at least 2 m (6 ft 7 in) above the floor,...