3Com AP2750 Manuel - Sayfa 3

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3Com AP2750 Manuel
3COM
WIRELESS LAN MANAGED ACCESS POINT AP2750 DATA SHEET
®
Features
STANDARDS-BASED, HIGH-SPEED ARCHITECTURE
High-speed wireless performance
Wi-Fi certified 802.11 a or b/g operation
Virtual Access Points
Supports 802.3af-compatible
Power over Ethernet (PoE)
Dual-mode diversity radio antennas
Dual-mode external antenna options
SECURITY
Encryption
Virtual Private Groups
RF Multi-band Sweep
Secure MAPs from theft and hacking
COMPREHENSIVE MANAGEMENT AND CONTROL
Zero configuration installation
Flexible deployment topologies supported
Automated transmit power and radio
channel assignment
Comprehensive MAP control and management

Specifications

System Requrements
3Com
®
Wireless LAN Switch WX1200 or 3Com
Wireless LAN Controller WX4400 required for
MAP operation
Total Ports
One 10BASE-T/100BASE-TX integrated
802.3af-compatible PoE port with auto-negotiation,
serial console port, DC power connector for non-PoE
operation
Media Interfaces
RJ-45, 802.11a, 802.11b, 802.11g, DB-9
Data Rates
802.11g/a: 54, 48, 36, 24, 18, 12, 9, 6 Mbps with
automatic fallback
802.11b: 11, 9, 5.5, 2, 1 Mbps with automatic fallback
Frequency Band
802.11a: 5 GHz
802.11b/g: 2.4 GHz
Modulation Technique
DSSS (Direct Sequence Spread Spectrum)
OFDM (Orthogonal Frequency Division Multiplexing)
Media Access Protocol
CSMA/CA
Description
Supports 802.11 a or b/g for speeds up to 54 Mbps at distances up to 100 meters (328 feet) for 802.11b/g
users, 50 meters or (164 feet) for 802.11a users.
Dual-mode radio allows operation for 802.11a or 802.11b/g and is software configurable from the 3Com
Wireless Switch Manager.
Each AP2750 can handle multiple BSSID/SSIDs to appear as multiple access points.
Both data and power are supplied over the same Ethernet cable to the AP2750, eliminating the need for
power adapters, power cords or AC outlets.
Dual-mode 802.11a and 802.11b/g antennas provide excellent performance and coverage in high
multi-path environments.
Support a variety of external dual-mode antennas for flexible installing options.
Performs packet encryption over the air for dynamic WEP, TKIP and AES.
Ability to have independently encrypted and isolated subnets or VLANs while using the same SSID.
Any AP2750 can scan the RF environment for both 802.11a and 802.11b/g rogue access points, ad-hoc users
or other RF interferers.
There is no local data store of sensitive network information in the MAPs, so if one is stolen no secure
information goes with it.
No pre-staging or pre-configuration of access points required and replacement MAPs inherit configuration
information from the wireless LAN switch or controller.
MAPs can be direct and/or indirectly connected to their managing wireless LAN switch and/or controller
allowing a wide variety of flexible deployment scenarios.
Transmit power settings and radio channel assignments can be set to optimize the RF cell size and support
international requirements.
MAPs are not operational in stand alone mode. All Attributes such as channel number, power level, SSIDs,
and security settings are all handled by the wireless LAN switch or controller for additional security
Operating Channels
Channel availability depends on local country
regulations. Wireless LAN system administrator
must choose correct country of operation. Channels
are then automatically configured to comply with
specified country's regulations.
Operating Range
802.11a: up to 50 meters (164 feet) transmit and
receive
802.11b/g: up to 100 meters (328 feet) transmit and
receive
Antennas
Two dual-band 2.4-2.48/5.15-5.85 GHz, 2 dBi omni-
directional antennas ship with the AP2750; additional
optional antennas available, see Ordering Information
Transmit Power Settings
Based on the regulatory domain set by the system
administrator, not to exceed the following:
802.11a
6 Mbps: ≥+20 dBm
9 Mbps: ≥+20 dBm
12 Mbps: ≥+20 dBm
18 Mbps: ≥+20 dBm
24 Mbps: ≥+19 dBm
36 Mbps: ≥+19 dBm
48 Mbps: ≥+16 dBm
54 Mbps: ≥+16 dBm
802.11b:
1 Mbps:
2 Mbps: ≥+20 dBm
5.5 Mbps: ≥+20 dBm
11 Mbps: ≥+20 dBm
802.11g:
6 Mbps: ≥+20 dBm
9 Mbps: ≥+20 dBm
12 Mbps: ≥+20 dBm
18 Mbps: ≥+20 dBm
24 Mbps: ≥+19 dBm
36 Mbps: ≥+19 dBm
48 Mbps: ≥+17 dBm
54 Mbps: ≥+17 dBm
Receive Sensitivity
802.11a
6 Mbps: ≤-87 dBm
9 Mbps: ≤-86 dBm
12 Mbps: ≤-84 dBm
18 Mbps: ≤-82 dBm
24 Mbps: ≤-79 dBm
36 Mbps: ≤-75 dBm
54 Mbps: ≤-71 dBm
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