3Com 3CRWX395075A Quick Installation Guide - Page 3

RJ-45 Cable Ports The access point has two RJ-45 ports. Each port provides a 10/100/1000BASE-TX Ethernet connection to a WX controller. The connection can be direct to an WX controller or indirect through an intermediate Layer 2 or Layer 3 network. For best performance, it is not recommend that the AP 3950 be connected directly to the WXR100 or WX1200 wireless controller as these controllers only have 10/100 ports. The access point receives power and data through the RJ-45 ports. Use a Category 5 (Cat 5) cable with straight-through signaling and standard RJ-45 connectors to connect an access point to a controller in the network. The two RJ-45 ports support dual-homed configurations for redundancy. The access point uses only one link for booting, configuration, and data transfer. If the link becomes unavailable, the access point can reboot using the other link. This second port can also be used for supplying additional power. Since the AP 3950 is a dual radio 802.11a/b/g/n access point, its power draw is slightly greater than what 802.3af power can supply. When only a single 802.3af power connection is applied, the AP uses two transmitters rather than all three (i.e. 2 x 3 MIMO). When dual 802.3af ports are used, the AP comes up in full 3 x 3 MIMO mode for extended ranges. You can also power the AP via a single 802.3af+, also known as pre-802.3at, switch or injector to get full 3 x 3 MIMO mode. The ports are identical except for logical numbering (1 or 2). You can use either port to connect the access point to a WX controller. However, the access point always attempts to boot on port 1 first. Only if the boot attempt on port 1 fails does the access point attempt to boot on port 2. If one port becomes unavailable, the other port can provide full power to the access point. Note: The access point does not support daisy-chain configurations. Do not connect the access point to another AP3950 access point. Observing Safety Precautions This equipment must be installed in compliance with local and national building codes, regulatory restrictions, and FCC rules. For the safety of people and equipment, only professional network personnel should install the access point .\ WARNING: To comply with FCC radio frequency (RF) exposure limits, a minimum body-toantenna distance of 20 cm (8 inches) must be maintained when the access point is operational. WARNING: To avoid possible injury or damage to equipment, you must use power supply equipment that is safety certified according to UL, CSA, IEC, or other applicable national or international safety requirements for the country of use. All references to power supply in this document refer to equipment meeting these requirements. WARNING: Do not operate the access point near unshielded blasting caps or in an otherwise explosive environment unless the device has been modified for such use by qualified personnel. WARNING: Do not touch or move the access point when the antennas are transmitting or receiving. WARNING: Do not hold any radio device so that the antenna is very close to or touching the face, eyes, or other exposed body part while the device's radio antenna is transmitting. 3