Table Of Contents

Cisco Aironet 1200 Series Access Points

Channels

IEEE 802.11g (2.4-GHz Band)

IEEE 802.11a (5-GHz Band)

Maximum Power Levels and Antenna Gains

IEEE 802.11g (2.4-GHz Band)

IEEE 802.11a (5-GHz Band)

Maximum Power Levels in Some Regulatory Domains with External Antennas

Special Country Restrictions

Power Conversion Table

Changing the Lightweight Access Point Output Power

Cisco Aironet 1200 Series Access Points

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This section lists the 1200 series lightweight access point (models: AIR-LAP1231G and AIR-LAP1232AG) IEEE 802.11g (2.4-GHz) and IEEE 802.11a (5-GHz) channels, maximum power levels, and antenna gains supported by the world's regulatory domains. For additional product hardware information refer to the Cisco Aironet 1200 Series Access Point Hardware Installation Guide.

The following topics are covered in this section:

•Channels

•Maximum Power Levels and Antenna Gains

•Power Conversion Table

•Changing the Lightweight Access Point Output Power

Channels

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 5-1.

Table 5-1 Channels for IEEE 802.11g

Channel Identifier	Center Frequency (MHz)	Regulatory Domains
		-A		-E		-J
		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
6	2437	X	X	X	X	X	X
7	2442	X	X	X	X	X	X
8	2447	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	-

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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.

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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 5-2.

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Table 5-2 Channels for IEEE 802.11a for the RM21A and RM22A Radio Modules 

Channel ID	Center Frequency (MHz)	Regulatory Domains
		-A	-C	-E	-I	-J	-K	-N	-P	-U	-S	-T
5150 to 5250 MHz
34	5170	-	-	-	-	X	-	-	-	-	-	-
36	5180	X	-	X	X	-	X	X	X	X	X	-
38	5190	-	-	-	-	X	-	-	-	-	-	-
40	5200	X	-	X	X	-	X	X	X	X	X	-
42	5210	-	-	-	-	X	-	-	-	-	-	-
44	5220	X	-	X	X	-	X	X	X	X	X	-
46	5230	-	-	-	-	X	-	-	-	-	-	-
48	5240	X	-	X	X		X	X	X	X	X	-
5250 to 5350 MHz
52	5260	X	-	X	X	-	X	X	X	-	X	-
56	5280	X	-	X	X	-	X	X	X	-	X	X
60	5300	X	-	X	X	-	X	X	X	-	X	X
64	5320	X	-	X	X	-	X	X	X	-	X	X
5470 to 5725 MHz
100	5500	-	-	X	-	-	X	-	-	-	-	-
104	5520	-	-	X	-	-	X	-	-	-	-	-
108	5540	-	-	X	-	-	X	-	-	-	-	-
112	5560	-	-	X	-	-	X	-	-	-	-	-
116	5580	-	-	X	-	-	X	-	-	-	-	-
120	5600	-	-	X	-	-	X	-	-	-	-	-
124	5620	-	-	X	-	-	X	-	-	-	-	-
128	5640	-	-	X	-	-	-	-	-	-	-	-
132	5660	-	-	X	-	-	-	-	-	-	-	-
136	5680	-	-	X	-	-	-	-	-	-	-	-
140	5700	-	-	X	-	-	-	-	-	-	-	-
5725 to 5850 MHz
149	5745	X	X	-	-	-	X	X	-	-	X	X
153	5765	X	X	-	-	-	X	X	-	-	X	X
157	5785	X	X	-	-	-	X	X	-	-	X	X
161	5805	X	X	-	-	-	X	X	-	-	X	X
165	5825	-	-	-	-	-	-	-	-	-	-	-

Maximum Power Levels and Antenna Gains

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 5-3 indicates the maximum power levels and antenna gains allowed for each IEEE 802.11g regulatory domain.

Table 5-3 Maximum Power Levels Per Antenna Gain for IEEE 802.11g 

Regulatory Domain	Antenna Gain (dBi)	Maximum Power Level (mW)
		CCK Modulation	OFDM Modulation
-A (4 W EIRP maximum)	2.2	100	30
	5	100	30
	6	100	30
	6.5	100	30
	8.5	100	30
	10	100	30
-E (100 mW EIRP maximum)	2.2	50	30
	5	30	10
	6	30	10
	6.5	20	10
	8.5	10	5
	10	10	5
-I (100 mW EIRP maximum)	2.2	50	30
	5	30	10
	6	30	10
	6.5	20	10
	8.5	10	5
	10	10	5
-J (10 mW/MHz EIRP maximum)	2.2	30	30
	5	30	30
	6	30	30
	6.5	30	30
	8.5	-	-
	10	-	-

IEEE 802.11a (5-GHz Band)

When shipped from the factory, the RM21A radio modules (with the 5-dBi integrated antenna) support the channels and maximum power levels listed in Table 5-4 for their regulatory domain.

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Table 5-4 Maximum Power for RM21A Radio Module with 5-dBi Integrated Antenna 

Channel ID	Center Frequency (MHz)	Regulatory Domains
		-A	-C	-E	-I	-J	-K	-N	-P	-U	-S	-T
5150 to 5250 MHz
34	5170	-	-	-	-	15	-	-	-	-	-	-
36	5180	15	-	17	17	-	15	15	15	15	17	-
38	5190	-	-	-	-	15	-	-	-	-	-	-
40	5200	15	-	17	17	-	15	15	15	15	17	-
42	5210	-	-	-	-	15	-	-	-	-	-	-
44	5220	15	-	17	17	-	15	15	15	15	17	-
46	5230	-	-	-	-	14	-	-	-	-	-	-
48	5240	15	-	17	17	-	15	15	15	15	17	-
5250 to 5350 MHz
52	5260	171	-	171	171	-	171	171	141	-	141	-
56	5280	171	-	171	171	-	171	171	141	-	141	15
60	5300	171	-	171	171	-	171	171	141	-	141	15
64	5320	171	-	171	171	-	1712	171	141	-	141	15
5470 to 5725 MHz
100	5500	171	-	171	-	-	171	-	-	-	-	-
104	5520	171	-	171	-	-	171	-	-	-	-	-
108	5540	171	-	171	-	-	171	-	-	-	-	-
112	5560	171	-	171	-	-	171	-	-	-	-	-
116	5580	171	-	171	-	-	171	-	-	-	-	-
120	5600	-	-	171	-	-	171	-	-	-	-	-
124	5620	-	-	171	-	-	171	-	-	-	-	-
128	5640	-	-	171	-	-	-	-	-	-	-	-
132	5660	171	-	171	-	-	-	-	-	-	-	-
136	5680	171	-	171	-	-	-	-	-	-	-	-
140	5700	171	-	171	-	-	-	-	-	-	-	-
5725 to 5850 MHz
149	5745	17	17	-	-	-	17	17	-	-	17	17
153	5765	17	17	-	-	-	17	17	-	-	17	17
157	5785	17	17	-	-	-	17	17	-	-	17	17
161	5805	17	17	-	-	-	17	17	-	-	17	17
165	5825	-	-	-	-	-	-	-	-	-	-	-

1 Frequencies require DFS (Uniform spreading not required for -P and -U regulatory domains).

When shipped from the factory, the RM21A radio modules (with the 9-dBi integrated antenna) support the channels and maximum power levels listed in Table 5-5 for their regulatory domain.

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Table 5-5 Maximum Power for RM21A Radio Module with 9-dBi Integrated Antenna 

Channel ID	Center Frequency (MHz)	Regulatory Domains
		-A	-C	-E	-I	-J	-K	-N	-P	-U	-S	-T
5150 to 5250 MHz
34	5170	-	-	-	-	11	-	-	-	-	-	-
36	5180	11	-	14	14	-	15	11	11	11	14	-
38	5190	-	-	-	-	11	-	-	-	-	-	-
40	5200	11	-	14	14	-	15	11	11	11	14	-
42	5210	-	-	-	-	11	-	-	-	-	-	-
44	5220	11	-	14	14	-	15	11	11	11	14	-
46	5230	-	-	-	-	11	-	-	-	-	-	-
48	5240	11	-	14	14	-	15	11	11	11	14	-
5250 to 5350 MHz
52	5260	171	-	141	141	-	171	171	81	-	111	-
56	5280	171	-	141	141	-	171	171	81	-	111	11
60	5300	171	-	141	141	-	171	171	81	-	111	11
64	5320	111	-	141	141	-	171	171	81	-	111	11
5470 to 5725 MHz
100	5500	171	-	171	-	-	171	-	-	-	-	-
104	5520	171	-	171	-	-	171	-	-	-	-	-
108	5540	171	-	171	-	-	171	-	-	-	-	-
112	5560	171	-	171	-	-	171	-	-	-	-	-
116	5580	171	-	171	-	-	171	-	-	-	-	-
120	5600	-	-	171	-	-	171	-	-	-	-	-
124	5620	-	-	171	-	-	171	-	-	-	-	-
128	5640	-	-	171	-	-	-	-	-	-	-	-
132	5660	171	-	171	-	-	-	-	-	-	-	-
136	5680	171	-	171	-	-	-	-	-	-	-	-
140	5700	171	-	171	-	-	-	-	-	-	-	-
5725 to 5850 MHz
149	5745	17	17	-	-	-	17	17	-	-	17	17
153	5765	17	17	-	-	-	17	17	-	-	17	17
157	5785	14	17	-	-	-	17	14	-	-	17	14
161	5805	11	17	-	-	-	17	11	-	-	17	11
165	5825	-	-	-	-	-	-	-	-	-	-	-

1 Frequencies require DFS (Uniform spreading not required for the -P and -U regulatory domains).

When shipped from the factory, the RM22A radio modules support the channels and maximum power levels listed in Table 5-6 for their regulatory domain.

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Table 5-6 Maximum Power for the RM22A Radio Module with Up To 9.5-dBi External Antennas 

Channel ID	Center Frequency (MHz)	Regulatory Domains
		-A	-C	-E1	-I1	-J	-K,2	-N3	-P	-U	-S	-T
5150 to 5250 MHz
34	5170	-	-	-	-	11	-	-	-	-	-	-
36	5180	11	-	17	17	-	15	11	11	11	14	-
38	5190	-	-	-	-	11	-	-	-	-	-	-
40	5200	11	-	17	17	-	15	11	11	11	14	-
42	5210	-	-	-	-	11	-	-	-	-	-	-
44	5220	11	-	17	17	-	15	11	11	11	14	-
46	5230	-	-	-	-	11	-	-	-	-	-	-
48	5240	11	-	17	17	-	15	11	11	11	14	-
5250 to 5350 MHz
52	5260	174	-	174	174	-	174	174	84	-	114	-
56	5280	174	-	174	174	-	174	174	84	-	114	11
60	5300	174	-	174	174	-	174	174	84	-	114	11
64	5320	114	-	174	174	-	174	114	84	-	114	11
5470 to 5725 MHz
100	5500	174	-	174	-	-	174	-	-	-	-	-
104	5520	174	-	174	-	-	174	-	-	-	-	-
108	5540	174	-	174	-	-	174	-	-	-	-	-
112	5560	174	-	174	-	-	174	-	-	-	-	-
116	5580	174	-	174	-	-	174	-	-	-	-	-
120	5600	-	-	174	-	-	174	-	-	-	-	-
124	5620	-	-	174	-	-	174	-	-	-	-	-
128	5640	-	-	174	-	-	-	-	-	-	-	-
132	5660	174	-	174	-	-	-	-	-	-	-	-
136	5680	174	-	174	-	-	-	-	-	-	-	-
140	5700	174	-	174	-	-	-	-	-	-	-	-
5725 to 5850 MHz
149	5745	17	17	-	-	-	17	17	-	-	17	17
153	5765	17	17	-	-	-	17	17	-	-	17	17
157	5785	14	17	-	-	-	17	14	-	-	17	14
161	5805	11	17	-	-	-	17	11	-	-	17	11
165	5825	-	-	-	-	-	-	-	-	-	-	-

1 For the -E and -I regulatory domains, see the "Maximum Power Levels in Some Regulatory Domains with External Antennas" section. 2 In South Korea, the AIR-RM22A-N-K9 is approved only with antenna gains of 6 dBi or less. 3 In Australia and New Zealand, the AIR-RM22A-N-K9 is approved only with antenna gains of 6 dBi or less. 4 Frequencies require DFS (Uniform spreading not required for the -P and -U regulatory domains).

Maximum Power Levels in Some Regulatory Domains with External Antennas

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Caution To avoid exceeding maximum conducted power levels in the EMEA (-E) and Israel (-I) regulatory domains when using an external antenna, you must manually set the access point output power level as shown in Table 5-7. The Israel (-I) regulator domain does not support channels 100 to 140.

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Note For the latest EMEA (-E) regulatory domain information, refer to the EU Directive 1999/5/EC Compliance Information document that ships with this product.

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Table 5-7 RM22A Radio Module Maximum Power with External Antennas in the (-E) and (-I) Regulatory Domains

Channel Identifier	Center Frequency (MHz)	Maximum Power Levels (dBm)
		4-dBi Antenna	5-dBi Antenna	6-dBi Antenna	7-dBi Antenna	9.5-dBi Antenna
5150 to 5250 MHz
34	5170	-	-	-	-	-
36	5180	17	17	15	15	11
38	5190	-	-	-	-	-
40	5200	17	17	15	15	11
42	5210	-	-	-	-	-
44	5220	17	17	15	15	11
46	5230	-	-	-	-	-
48	5240	17	17	15	15	11
5250 to 5350 MHz
52	5260	17	17	15	15	11
56	5280	17	17	15	15	11
60	5300	17	17	15	15	11
64	5320	17	17	15	15	11
5470 to 5725 MHz
100	5500	17	17	17	17	17
104	5520	17	17	17	17	17
108	5540	17	17	17	17	17
112	5560	17	17	17	17	17
116	5580	17	17	17	17	17
120	5600	17	17	17	17	17
124	5620	17	17	17	17	17
128	5640	17	17	17	17	17
132	5660	17	17	17	17	17
136	5680	17	17	17	17	17
140	5700	17	17	17	17	17
5725 to 5850 MHz
149	5745	-	-	-	-	-
153	5765	-	-	-	-	-
157	5785	-	-	-	-	-
161	5805	-	-	-	-	-
165	5825	-	-	-	-	-

Special Country Restrictions

Table 5-8 lists special restrictions for wireless operation in some countries.

Table 5-8 Special Country Restrictions for Wireless Operation

Country	Frequency Band (GHz)	Regulatory Domain	Special Limitation and Restrictions
Australia and New Zealand	5	-N	2.4 and 5 GHz external antenna gain limited to 6 dBi. or less
South Korea	2.4 and 5	-K	2.4 and 5 GHz external antenna gain limited to 6 dBi or less.
Mexico	2.4	-N	End user must limit 2.4 GHz operation to 2450 to 2483.5 MHz and 36 dBm EIRP1 .
Russian Federation	5	-E	End user must limit 5 GHz operation to 5150 to 5350 and 5650 to 5725 MHz.
United States	2.4	-A	Operation limited to indoor use only from 5150-5250 MHz.

1 EIRP (dBm) = maximum output power (dBm) + antenna gain (dBi)

Power Conversion Table

You can use Table 5-9 to convert power values from dBm to mW or from mW to dBm.

Table 5-9 Power Conversion Table

mW	dBm		mW	dBm
200	23		15	12
150	22		12	11
125	21		10	10
100	20		8	9
80	19		6	8
60	18		5	7
50	17		4	6
40	16		3	5
30	15		2	2
25	14		1	-1
20	13		-

Changing the Lightweight Access Point Output Power

This section provides instructions for changing the 1200 series access point output power to comply with the maximum power limits imposed by special regulatory and country restrictions (see the"Maximum Power Levels in Some Regulatory Domains with External Antennas" section and the "Special Country Restrictions" section). Follow these instructions to change the output power settings using a controller and your browser:

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Note Administrator privileges may be required in order to change access point settings.

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Note Regulatory domains are set at the factory and cannot be changed by the user.

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Caution To meet regulatory restrictions, the access point and the external antenna must be professionally installed. The network administration or other IT professional responsible for installing and configuring the unit is a suitable professional installer. Following installation, access to the unit should be password protected by the network administrator to maintain regulatory compliance.

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The output power on the access points can be changed only using a Cisco wireless LAN controller (2600 series or 4400 series), the controllers on a Cisco Wireless Services Module (WiSM), or using Cisco Wireless Control System (WCS).

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Note See the Cisco Wireless LAN Controller Configuration Guide for more details on how to to configure your access point using the web-browser interface.

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Follow these steps to change the access point's output power to meet local regulations using a controller:

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Step 1 Open your Internet browser. You must use Microsoft Internet Explorer 6.0.2800 or a later release.

Step 2 Enter https://IP address (where IP address is the controller's IP address) in the browser address line and press Enter. A user login screen appears.

Step 3 Enter the username and password and press Enter. The controller's summary page appears.

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Note The username and password are case-sensitive.

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Step 4 Click Wireless > 802.11a Radios or 802.11b/g Radios and a list of associated access points appears.

Step 5 Choose the desired access point from the displayed list and click Configure. The radio settings page appears.

Step 6 Scroll down to the Tx Power Level Assignment field, and click Custom.

Custom indicates that the radio output power is manually controlled by the Tx Power Configuration setting field.

Step 7 In the Tx Power Level field, select the appropriate power level setting (1 to 8).

Based on the operating channel, the regulatory domain, and the controller power level setting (1 to 8), the actual transmit power at the access point can be reduced to comply with special regulatory or country restrictions.

Table 5-10 lists the controller power settings and the corresponding output power levels for these two examples:

•2.4-GHz (802.11b/g) operation:

–(-E) regulatory domain and channel 2 using 11-Mbps data rates

–6-dBi external antenna

•5-GHz (802.11a) operation:

–(-E) regulatory domain and channel 52 using 36-Mbps data rates

–RM22A with 6-dBi external antenna

Table 5-10 Example of Output Power Levels

Controller Tx Power Settings1	Radio Output Power
	802.11b (mW)	802.11g (mW)	802.11a (dBm)
1 (maximum)	50 2	302	17 3
2	25	15	14
3	12	8	11
4	6	4	8
5	3	2	5
6	2	1	2
7	1	-	-1
8	-	-	-

1 The Tx Power Level setting of 1 represents the maximum conducted power setting for the access point. Each subsequent controller power level (such as 2, 3, 4, etc.) represents approximately a 3-dBm reduction in transmit power from the previous power level. 2 The maximum output power levels obtained from Table 5-3 and the values converted using Table 5-9. 3 The maximum output power level of 17 dBi obtained from Table 5-6.

•For 802.11b (CCK) and 802.11g (OFDM) data rates (see Table 5-3 and Table 5-10), the manual controller Tx Power Level setting is 3.

•For only 802.11b (CCK) data rates (see Table 5-3 and Table 5-10), the manual controller Tx Power Level setting is 2.

•For 802.11a (see Table 5-7 and Table 5-10), the manual controller Tx Power Level setting is 2.

Step 8 Click Apply.

Step 9 Close your Internet browser.

For additional configuration information, refer to the Cisco Wireless LAN Controller Configuration Guide.

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