Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, 12.3(4)JA
Channels and Antenna Settings
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Channels and Antenna Settings

Table Of Contents

Channels and Antenna Settings

Channels

IEEE 802.11b (2.4-GHz Band)

IEEE 802.11g (2.4-GHz Band)

IEEE 802.11a (5-GHz Band)

Maximum Power Levels and Antenna Gains

IEEE 802.11b (2.4-GHz Band)

IEEE 802.11g (2.4-GHz Band)

IEEE 802.11a (5-GHz Band)


Channels and Antenna Settings


This appendix lists the access point radio channels and the maximum power levels supported by the world's regulatory domains.

The following topics are covered in this appendix:

Channels

Maximum Power Levels and Antenna Gains

Channels

IEEE 802.11b (2.4-GHz Band)

The channel identifiers, channel center frequencies, and regulatory domains of each IEEE 802.11b 22-MHz-wide channel are shown in Table A-1.

Table A-1 Channels for IEEE 802.11b

Channel Identifier
Center Frequency (MHz)
Regulatory Domains
Americas (-A)
EMEA
(-E)
Japan
(-J)
Israel
(-I)
China
(-C)

1

2412

X

X

X

-

X

2

2417

X

X

X

-

X

3

2422

X

X

X

-

X

4

2427

X

X

X

-

X

5

2432

X

X

X

X

X

6

2437

X

X

X

X

X

7

2442

X

X

X

X

X

8

2447

X

X

X

X

X

9

2452

X

X

X

-

X

10

2457

X

X

X

-

X

11

2462

X

X

X

-

X

12

2467

-

X

X

-

-

13

2472

-

X

X

-

-

14

2484

-

-

X

-

-



Note Mexico is included in the Americas (-A) regulatory domain; however, channels 1 through 8 are for indoor use only while channels 9 through 11 can be used indoors and outdoors. Users are responsible for ensuring that the channel set configuration is in compliance with the regulatory standards of Mexico.


IEEE 802.11g (2.4-GHz Band)

The channel identifiers, channel center frequencies, and regulatory domains of each IEEE 802.11g 22-MHz-wide channel are shown in Table A-2.

Table A-2 Channels for IEEE 802.11g

Channel Identifier
Center Frequency (MHz)
Regulatory Domains
Americas (-A)
EMEA (-E)
Israel (-I)
Japan (-J)
CCK
OFDM
CCK
OFDM
CCK
OFDM
CCK
OFDM

1

2412

X

X

X

X

-

-

X

X

2

2417

X

X

X

X

-

-

X

X

3

2422

X

X

X

X

-

-

X

X

4

2427

X

X

X

X

-

-

X

X

5

2432

X

X

X

X

X

X

X

X

6

2437

X

X

X

X

X

X

X

X

7

2442

X

X

X

X

X

X

X

X

8

2447

X

X

X

X

X

X

X

X

9

2452

X

X

X

X

-

-

X

X

10

2457

X

X

X

X

-

-

X

X

11

2462

X

X

X

X

-

-

X

X

12

2467

-

-

X

X

-

-

X

X

13

2472

-

-

X

X

-

-

X

X

14

2484

-

-

-

-

-

-

X

-


IEEE 802.11a (5-GHz Band)

The channel identifiers, channel center frequencies, and regulatory domains of each IEEE 802.11a 20-MHz-wide channel are shown in Table A-3.

Table A-3 5-GHz Radio Band 

Channel Identifier
Center Frequency
(MHz)
Regulatory Domains
North America (-A)
Taiwan (-T)
ETSI
Singapore (-S)
Japan (-J)

34

5170

-

-

-

-

X

36

5180

X

-

X

X

-

38

5190

-

-

-

-

X

40

5200

X

-

X

X

-

42

5210

-

-

-

-

X

44

5220

X

-

X

X

-

46

5230

-

-

-

-

X

48

5240

X

-

X

X

-

52

5260

X

X

X

-

-

56

5280

X

X

X

-

-

60

5300

X

X

X

-

-

64

5320

X

X

X

-

-

100

5500

-

-

X

-

-

104

5520

-

-

X

-

-

108

5540

-

-

X

-

-

112

5560

-

-

X

-

-

116

5580

-

-

X

-

-

120

5600

-

-

X

-

-

124

5620

-

-

X

-

-

128

5640

-

-

X

-

-

132

5660

-

-

X

-

-

136

5680

-

-

X

-

-

140

5700

-

-

X

-

-

149

5745

-

-

-

-

-

153

5765

-

-

-

-

-

157

5785

-

-

-

-

-

161

5805

-

-

-

-

-



Note All channel sets are restricted to indoor usage except the Americas (-A), which allows for indoor and outdoor use on channels 52 through 64 in the United States.


Maximum Power Levels and Antenna Gains

IEEE 802.11b (2.4-GHz Band)

An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table A-4 indicates the maximum power levels and antenna gains allowed for each IEEE 802.11b regulatory domain.

Table A-4 Maximum Power Levels Per Antenna Gain for IEEE 802.11b 

Regulatory Domain
Antenna Gain (dBi)
Maximum Power Level (mW)

Americas (-A)
(4W EIRP maximum)

2.2

100

5.2

100

6

100

8.5

100

12

100

13.5

100

EMEA (-E)
(100 mW EIRP maximum)

2.2

50

5.2

30

6

30

8.5

5

12

5

13.5

5

Japan (-J)
(10 mW/MHz EIRP maximum)

2.2

30

5.2

30

6

30

8.5

n/a

12

n/a

13.5

5

Israel (-I)
(100 mW EIRP maximum)

2.2

50

5.2

30

6

30

8.5

5

12

5

13.5

5


IEEE 802.11g (2.4-GHz Band)

An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table A-5 indicates the maximum power levels and antenna gains allowed for each IEEE 802.11g regulatory domain.

Table A-5 Maximum Power Levels Per Antenna Gain for IEEE 802.11g 

Regulatory Domain
Antenna Gain (dBi)
Maximum Power Level (mW)
CCK
OFDM

Americas (-A)
(4W EIRP maximum)

2.2

100

30

5.2

100

30

6

100

30

8.5

100

30

10

100

30

EMEA (-E)
(100 mW EIRP maximum)

2.2

50

30

5.2

30

10

6

30

10

8.5

10

5

10

10

5

Japan (-J)
(10 mW/MHz EIRP maximum)

2.2

30

30

5.2

30

30

6

30

30

8.5

n/a

n/a

10

n/a

n/a

Israel (-I)
(100 mW EIRP maximum)

2.2

50

30

5.2

30

10

6

30

10

8.5

10

5

10

10

5


IEEE 802.11a (5-GHz Band)

An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table A-6 indicates the maximum power levels allowed with the Cisco integrated antenna for each IEEE 802.11a regulatory domain.

Table A-6

Regulatory Domain
Maximum Power Level (mW)
with 6-dBi Antenna Gain

Americas (-A)
(160 mW EIRP maximum on channels 36-48,
(800 mW EIRP maximum on channels 52-64)

40

Japan (-J)
(10 mW/MHz EIRP maximum)

40

Singapore (-S)

(100 mW EIRP maximum)

20

Taiwan (-T)
(800 mW EIRP maximum)

40


Maximum Power Levels Per Antenna Gain for IEEE 802.11a