You probably need to use the WDS mode. The Wireless Distribution System allows access points to communicate with one another wirelessly in a standardized way. It can also simplify the network infrastructure by reducing the amount of cabling required. Basically the access points will act as a client and an access point at the same time.
If you are trying to mount the equipments in the outdoor environment, the D-Link AirPremier 802.11g Outdoor AP/Bridge DWL-2700AP is capable of delivering transfer rates of up to 54Mbps in any outdoor environment. For advanced installations, this AP/Bridge has an integrated 802.3af Power over Ethernet (PoE) port that allows you to install the device in areas where power outlets are not readily available.
802.11g (Full Power with 5dBi gain diversity dipole antenna)
Indoor:• 98ft (30m) @ 54Mbps
• 112ft (34m) @ 48Mbps
• 184ft (56m) @ 18Mbps
• 217ft (66m) @ 12Mbps
• 259ft (79m) @ 9Mbps
• 325ft (99m) @ 6Mbps
Outdoor:• 367ft (112m) @ 54Mbps
• 820ft (250m) @ 18Mbps
• 1,640ft (500m) @ 6Mbps
If you want the indoor equipment, the D-Link AirPremierTM DWL-2200AP Wireless Access Point is an ideal solution for creating a wireless network or extending the range of an existing wireless network and the DWL-2200AP can be configured in any one of four modes: Access Point, Point-to-Point (PtP) bridge with another DWL-2200AP, Point-to-Multipoint (PtMP) bridge, or Repeater.
802.11g (Full Power with 5dBi gain diversity dipole antenna)
Indoors:• 98ft (30m) @ 54Mbps
• 108ft (33m) @ 48Mbps
• 121ft (37m) @ 36Mbps
• 151ft (46m) @ 24Mbps
• 203ft (62m) @ 18Mbps
• 223ft (68m) @ 12Mbps
• 256ft (78m) @ 9Mbps
• 302ft (92m) @ 6Mbps
Outdoors:• 328ft (100m) @ 54Mbps
• 968ft (295m) @ 11Mbps
• 1378ft (420m) @ 6Mbps