D-Link DSR-150N DSR-150 User Manual - Page 80

Unified Services Router User Manual b ro ad cast t h e SSID fo r t h e VA P wit h W EP s in ce it is mean t t o b e u s ed fo r a few legacy devices in this s cenario. 4.4 Tuning Radio Specific Settings Setup > Wireless Settings > Radio Settings The Radio Settings page lets you configure t he channels and power levels available fo r t h e A P's en abled o n t h e DSR. Th e ro u t er h as a d u al b an d 802.11n rad io , mean in g eit h er 2.4 GHz o r 5 GHz freq u en cy o f o p erat io n can b e s elect ed (n o t co n cu rren t ly t h o u g h). Bas ed o n t he s elected o p erat in g freq u en cy , t h e mo d e s elect io n will let y o u define whether legacy connections or only 802.11n connections (or both) are accepted on configured APs . Figure 47 : Radio card configurat io n options The ratified 802.11n s upport on this radio requires s electing the appropriate broadcast (NA o r NG et c.) mo d e, an d t h en d efinin g t h e ch an n el s p acin g an d co n t ro l s id e b an d fo r 802.11n t raffic. Th e d efau lt s et t in g s are ap p ro p riat e fo r mo s t n et wo rks . Fo r examp le, ch an g in g t h e ch an n el s p acin g t o 40 M Hz can imp ro v e b an d wid t h at t h e exp en s e o f s u p p o rt in g earlier 802.11n clien t s . Th e av ailab le t ran smis sio n ch ann els are g o v ern ed b y reg u latory co nst rain t s b as ed o n t h e reg io n s et t in g o f t h e ro u t er. Th e maximu m t ran s mis s io n p o wer is s imilarly g o v ern ed b y reg u lat o ry limit s ; y o u h av e t h e o p t io n t o d ecreas e fro m t h e d efau lt maximu m t o red u ce t h e s ig n al s t ren g t h o f t raffic o u t o f t h e rad io . 78