Names and Locations of CS

LED Indications

Indication

Color

Description

STATUS

Green/Red

CS status indication

•	OFF: Power Off
•	Green ON: Stand-by (no active calls)
•	Slow Green Flashing (60 times per minute): Talk (active calls)
•	Moderate Green Flashing (120 times per minute): Busy
•	Red ON: Fault (includes Initialization)
•	Red Flashing (60 times per minute): Out of Service/Starting up

CS status indication during the site survey

•	Red ON: The CS is connected to an AC adaptor/battery box.
•	Red Flashing (60 times per minute): The CS is connected to the PBX.

Required Equipment and Maximum Number of Calls

CSs determine the area covered by the wireless system. The number of calls that can be made simultaneously through each CS varies depending on the model, as follows:

CS

Connection Card

Maximum Calls

Compatible PSs

KX-T0155

DHLC/DLC

2

•	KX-TD7685
•	KX-TD7695

KX-T0158

DHLC/DLC

8

Note
	For more details about the PS, refer to the Operating Instructions of the PS.

Required Distances between Equipment

Maintain the distances listed below between equipment in order to prevent noise, interference or the disconnection of a conversation. (The distance may vary depending on the environment.)

Equipment

Distance

CS and office equipment such as a computer, telex, fax machine, etc.

More than 2 m (6 ft 7 in)

CS and PS

More than 1 m (3 ft 3 in)

Each CS

More than 3 m (10 ft)

Each PS

More than 0.5 m (1 ft 8 in)

PBX and CS

More than 2 m (6 ft 7 in)

If multiple CSs cover the same area, the phone connection may become noisy or the number of possible simultaneous calls with PSs may decrease due to interference between the CSs. For details, refer to "3.10.5 Site Survey—Testing the Radio Signal Strength".

The required distance between CSs may vary depending on the environment of the installation site and conditions in which the wireless system is used. Conduct a site survey to determine the appropriate distance.

RF Specification

Item

Description

Radio Access Method

MultiCarrier TDMA-TDD

Frequency Band

1920 MHz to 1930 MHz

Number of Carriers

5

Carrier Spacing

1728 kHz

Bit Rate

1152 kbps

Carrier Multiplex

TDMA, 24 (Tx12, Rx12) slots per frame

Frame Length

10 ms

Modulation Scheme

GFSK

Roll-off factor=0.5 50 % roll-off in the transmitter

Data Coding for Modulator

Differential Coding

Voice CODEC

32 kbps ADPCM (CCITT G.726)

Transmission Output

Peak 0.12 W

1. Investigate the installation site

Refer to "3.10.3 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 account of distance, building materials, etc.

2. Prepare for site survey

Refer to "3.10.4 Before Site Survey".

a.

Check and assign the CS ID number to the PS.

b.

Assign a channel number to each CS by setting the DIP switches on the back of the CS.

c.

Supply electricity to each CS using an AC adaptor/battery box or by connecting them to the PBX.

d.

Install each CS temporarily as planned.

Notes
	•	Install at least 2 m (6 ft 7 in) above the floor.
	•	Place the antennas so that they are pointing in directions that are 90 degrees apart (for antenna diversity).

3. Conduct the site survey

Refer to "3.10.5 Site Survey".

a.

Test the radio signal strength using the PS.
Confirm that the radio signal strength level is "12" near the CS.

Using the KX-TD7685/KX-TD7695

b.

By walking away from the CS with the PS, check the radio signal strength. The radio signal strength weakens as you walk away from the CS.

c.

Map the CS coverage area at radio signal strength levels "3" and "8".

d.

Make sure that adjacent CS coverage areas meet where the radio signal strength level is "7" to "9".

e.

Make sure that the radio signal strength level is greater than "3" at any location within the service area required by the user.

4. Finish the site survey

Refer to "3.10.6 After Site Survey".

a.	Turn off the PS.
b.	Stop supplying power, and return all DIP switches of each CS to the OFF position.

5. Connect the CS and PS to the PBX and test the operation

Refer to "3.10.7 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 conversations disconnect, relocate the CSs or install an additional CS.

6. Mount the CS on the wall

Refer to "3.10.8 Wall Mounting".

a.	If there are no problems in testing, mount the CS on the wall.

Understanding 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 computers and fax machines, can interfere with radio waves. Such equipment may create noise or interfere with the performance of the PS.

The illustration below shows the special transmitting patterns of radio waves.

1.	Radio waves are reflected by objects made of materials such as metal.
2.	Radio waves are diffracted by objects such as metallic columns.
3.	Radio waves penetrate objects made of materials such as glass.

Relationships between Radio Waves and Building Structure and Materials

•	The CS coverage area is affected more by the building materials and their thickness than the number of obstacles.
•	Radio waves tend to be reflected or diffracted by conductive objects and rarely penetrate them.
•	Radio waves tend to penetrate insulated objects and are rarely reflected by them.
•	Radio waves penetrate thin objects more than thick objects.
•	The table below shows the transmission tendency of radio waves when they reach objects made from various materials.

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 film

Radio waves are weakened considerably when they penetrate windows.

Floor

Ferroconcrete

Radio waves can penetrate them, but the more iron there is, the more radio waves are reflected.

Partition

Steel

Radio waves are reflected and rarely penetrate them.

Plywood, Glass

Radio waves usually penetrate them.

Column

Ferroconcrete

Radio waves can penetrate them, but the more iron there is, the more radio waves tend to be reflected or diffracted.

Metal

Radio waves tend to be reflected or diffracted.

Cabinet

Steel

Radio waves are usually reflected or diffracted, and rarely penetrate them.

Wood

Radio waves can penetrate them, but they are weakened.

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 "3.10.5 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 plywood).
c.	Check the layout and dimensions of the room, corridor, etc.
d.	Write down the above information on the map.

2.

Examine the service area required by the user on the map, referring to the following example.

a.	Draw the coverage area around a CS. Extend the coverage area 20 m to 50 m (65 ft to 164 ft) in each direction, depending on the materials of the building structures and obstacles in the installation site. Note that a CS cannot be installed outside a building.
b.	If 1 CS cannot cover the entire service area, install additional CSs as required. Overlap the coverage areas of adjacent CSs. Where CS coverage areas overlap, the PS will start call handover to the next CS if the signal from 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.

Example: Installing in a Room Separated by Interior Walls

Things to take note of:

•	The room is separated by interior walls.
•	The room is surrounded by concrete walls.

CS installation plan:

•	The coverage area of each CS will not extend as far as when there are no obstacles, because the radio signals will be weakened by separating walls. Therefore, you will need 5 CSs to cover the entire room.

Checking the CS ID Number

Check the CS ID number label attached to the CS. If the CS ID number label is not attached to the CS, check the CS ID number using the Maintenance Console. For details, refer to "2.6.15 Utility—CS Information" in the PC Programming Manual.

Assigning the CS ID Number to the PS

Using the KX-TD7685/KX-TD7695

Note
	To clear the CS ID number assigned to the PS, follow the procedure below:

Setting and Installing the CS Temporarily for Site Survey

1.

Switch the Radio Signal Test switch from OFF to ON.

2.

Set the channel number switches as desired.

3.

Set the Power Supply Select switch as desired.

KX-T0155

KX-T0158

Note
	If more than 1 CS is in Radio Signal Test mode, each CS must have a unique channel number.

4.

After setting the DIP switches, connect the CS to an AC adaptor/battery box using a power supply adaptor, or connect it to the PBX.

Notes
	•	When using the KX-T0158, it is NOT recommended to conduct the site survey using the battery box.
	•	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.
	•	If the Power Supply Select switch is set to ON in step 3, connect the CS to an AC adaptor/battery box. If it is set to OFF, connect the CS to the PBX.

KX-T0155

KX-T0158

5.

Install the CS temporarily for the site survey. Install the CS at least 2 m (6 ft 7 in) above the floor, and place the antennas so that they are pointing in directions that are 90 degrees apart (for antenna diversity), as follows:

Testing the Radio Signal Strength

After locating the CS(s) temporarily, execute the Radio Signal Test using the PS. Directly after entering Radio Signal Test mode, the PS scans channel 0 for a CS that it can connect to. The channel to be scanned can be changed by pressing the appropriate keys 0 through 4.

1. Enter Radio Signal Test mode.

Using the KX-TD7685/KX-TD7695

Notes
	*1: Channel number
	*2: Slot number
	*3: When a slot is synchronized, "`SYNC`" is displayed.
	*4: Radio signal strength level (12 to 00)
	*5: Frame error (0000 to 9999)/Frame counter (0000 to 9999). Frame error indicates the number of errors out of 10 000 radio signal receptions. An increased number of frame errors indicates greater radio signal interference and more frequent noise during conversation. The ideal number of frame errors is "0000".
	*6: Error rate (%) = Frame error (0000 to 9999) / Frame counter (0000 to 9999) × 100

CAUTION
	•	Storing the scan data will clear all directory data.
	•	The PS will not operate in normal mode if scan data is saved on it. For details on clearing scan data, refer to "Clearing the Stored Scan Data".

2. Measure the error rate and the radio signal strength by moving towards and away from the CS.

Notes
	•	When the error rate is 2% or more, measure the error rate at the same location at least 5 times. You must disconnect the CS and then reconnect it to take each measurement. If the error rate is consistently 2% or more, there may be interference from external wireless equipment. In this case, the following may happen regardless of the radio signal strength level.

Error Rate

Description

Approx. 2%

May receive noise

Approx. 10%

May fail to make/receive calls

The above is a rough standard, and may vary depending on the environment.

•	When deciding where to install the CS, priority should be given to an error rate rather than a radio signal strength level.
•	After installing the CS according to the results of the survey, confirm that calls can be made and received, and conversations can be heard clearly.

a.

Move to the CS until the radio signal strength level becomes "12".

b.

Move away from the CS and identify the CS coverage area within which the radio signal strength level is greater than "8". Draw the area on the map.

c.

Move away from the CS and identify the CS coverage area within which the radio signal strength level is greater than "3". Draw the area on the map.

3. Repeat steps 1 and 2 for other CSs, and relocate the CSs when necessary.

a.

Plan adjacent CS coverage areas so that areas meet where radio signal strength level is "7" to "9".

b.

Plan the CS coverage areas to meet for at least 2 CSs at any location in the installation site.

c.

Make sure that the radio signal strength level is greater than "3" at any location in the service area required by the user.

Notes
	•	If a channel is set, the results of measurement for the 24 slots on the channel are saved each time. If the same channel is set, the new results override the previous ones. Therefore, a measurement of 5 channels × 24 slots in total can be made.
	•	If correct results cannot be obtained (e.g., there are many frame errors), change the location of the CS and repeat the site survey to select the best location.
	•	If multiple CSs cover the same area, the phone connection may become noisy or the number of possible simultaneous calls with PSs may decrease due to interference between the CSs. As a guideline, the maximum number of CSs in an area with a radio signal strength of "11" is 4 (for KX-T0155)/2 (for the KX-T0158).

To guarantee the number of simultaneous calls, the KX-T0158 is recommended.

Referring to the Stored Scan Data

Using the KX-TD7685/KX-TD7695

Clearing the Stored Scan Data

Using the KX-TD7685/KX-TD7695

Connecting the CS

1.

Connect the cable from the PBX to the CS.

KX-T0155

KX-T0158

2.

Pass the cable through the groove of the CS (in any direction depending on your preference).

KX-T0155

KX-T0158

Registering the PS

The PS must be registered to the PBX before it can be used. Programming of both the PS and PBX is required. A Proprietary Telephone (PT) with multiline display (e.g., KX-T7636 6-line display) is required to perform the PBX system programming.

Note
	For details about system programming using a PT, refer to "1.13.30 PT Programming" in the Feature Manual, and "2.1 PT Programming" in the PT Programming Manual.

Entering the System Programming Mode

PT (Administrator Level)

Note
	means default value throughout this section.

Setting the Personal Identification Number (PIN) for PS Registration

To prevent registering the PS to a wrong PBX, a PIN for PS registration can be set to the PBX. Before registering the PS to the PBX, enter the PIN set to the PBX into the PS. By doing so, the PS will only be registered to the PBX with the matching PIN.

Notes
	•	By default, the PIN for PS registration is "1234" for both the PBX and PS. Therefore, the PS can be registered to the PBX without setting the PIN.
	•	The PIN for PS registration will only be used when registering the PS to the PBX. Therefore, during normal operation after registration, even if there is more than 1 PBX with the same PIN near the PS, the PS will not be inadvertently linked to a different PBX.

Setting the PIN for PBX

Setting the PIN for PS

Using the KX-TD7685/KX-TD7695

PS Registration

When the PS has not been registered yet

When registering the PS for the first time, it is possible to select the desired language for the display. (You do not need to enter the PS system programming mode when registering for the first time.)

Using the KX-TD7685/KX-TD7695

When the PS has already been registered to another PBX

One PS can be registered to a maximum of 4 different PBXs.

Using the KX-TD7685/KX-TD7695

PS Termination

Confirm the following before canceling the PS registration:

•	The PS is turned on.
•	The PS is within range.

If "Rejected" or "Time out" is displayed

The registration information is still stored in the PS. You need to delete the registration information from the PS.

Using the KX-TD7685/KX-TD7695

Testing the Operation

Walk around the service area while having a conversation using a registered PS. If noise is frequent or conversations disconnect, relocate the CSs or install an additional CS.

Mounting the KX-T0155/KX-T0158

WARNING
	•	MAKE SURE THAT THE WALL THAT THE UNIT WILL BE ATTACHED TO IS STRONG ENOUGH TO SUPPORT THE UNIT (APPROX. 310 g [11 oz]). IF NOT, IT IS NECESSARY FOR THE WALL TO BE REINFORCED.
	•	ONLY USE THE WALL-MOUNTING EQUIPMENT (SCREWS, WASHERS, WALL MOUNTING PLATE) INCLUDED WITH THE UNIT.
	•	WHEN DRIVING THE SCREWS INTO THE WALL, BE CAREFUL TO AVOID TOUCHING ANY METAL LATHS, WIRE LATHS OR METAL PLATES IN THE WALL.
	•	WHEN THIS PRODUCT IS NO LONGER IN USE, MAKE SURE TO DETACH IT FROM THE WALL.

1.

Place the reference for wall mounting on the wall to mark the 2 screw positions.

2.

Install the 2 screws and washers (included) into the wall.

Notes
	•	Make sure that the screw heads are at the same distance from the wall.
	•	Install the screws perpendicular to the wall.

3.

Insert the upper and lower tabs of the wall mounting plate into the designated openings in the base unit.

KX-T0155

KX-T0158

4.

Slide the wall mounting plate in the direction of the arrow until it clicks.

KX-T0155

KX-T0158

5.

Hook the CS on the screw heads.

KX-T0155

KX-T0158

6.

Place the antennas so that they are pointing in directions that are 90 degrees apart (for antenna diversity), as follows:

CAUTION
	Make sure the cables are securely fastened to the wall.

Reference for Wall Mounting

Please copy this page and use as a reference for wall mounting.

Note
	Make sure to set the print size to correspond with the size of this page. If the dimension of the paper output still deviates slightly from the measurement indicated here, use the measurement indicated here.

	•	The CS should be kept free of dust, moisture, high temperature (more than 40 °C [104 °F]), low temperature (less than 0 °C [32 °F]), and vibration, and should not be exposed to direct sunlight.
	•	The CS should not be placed outdoors (use indoors).
	•	The CS should not be placed near high-voltage equipment.
	•	The CS should not be placed on a metal object.

	•	The no. 3, 4, 5 and 6 pins (Master) of the CS must be connected to 2 pairs of pins on the DHLC/DLC card.
	•	When connecting multiple KX-T0158 CSs to a DHLC/DLC card, make sure that the no. 3, 4, 5 and 6 pins (Master) of adjacent CSs are at least 2 pairs of pins away on the card.
	•	For details about DHLC card or DLC card, refer to "3.6.2 DHLC8 Card (KX-TDA0170)", "3.6.3 DLC8 Card (KX-TDA0171)", or "3.6.4 DLC16 Card (KX-TDA0172)".
	•	The Local Processor (LPR) software of the DHLC/DLC card used must be version 5.000 or later. If necessary, upgrade the LPR software of the DHLC/DLC card. To confirm the LPR software version of the card, refer to "2.8.2 [1-1] Slot—Summary" in the PC Programming Manual.
	•	CS connections must be made within the same DHLC/DLC card.
	•	When a wrong connection is made, satisfactory performance of the CS cannot be guaranteed. Check the connection of CS and the PBX using the Maintenance Console. For information about how to view CS information using the Maintenance Console, refer to "2.6.15 Utility—CS Information" in the PC Programming Manual.