Lancom Systems 1781EW 62025 Benutzerhandbuch

2400-2483.5 MHz (ISM) or 5150-5825 MHz (depending on country-specific restrictions)

Frequency band 2.4 GHz or 5 GHz

54 Mbps to IEEE 802.11g (fallback to 48, 36 , 24, 18, 12, 9, 6 Mbps, Automatic Rate Selection) compatible to IEEE 802.11b (11, 5.5, 2, 1 Mbps,
Automatic Rate Selection), 802.11 b/g compatibility mode or pure g or pure b

Data rates 802.11b/g

54 Mbps (fallback to 48, 36 , 24, 18, 12, 9, 6 Mbps, Automatic Rate Selection), fully compatible with TPC (adjustable power output) and DFS
(automatic channel selection, radar detection) according to ETSI EN 301 893 V.1.5.1., EN 302 502

Data rates 802.11a/ h

300 Mbps according to IEEE 802.11n with MSC15 (Fallback to 6,5 Mbps with MSC0)

Data rates 802.11n

Up to 150 m (up to 30 m in buildings) *

Range 802.11a/b/g *

Up to 250 m @ 6.5 Mbps (up to 20 m @ 300 Mbps indoor)*

Range 802.11n

802.11b: +18 dBm @ 1 and 2 Mbps, +18 dBm @ 5,5 and 11 Mbps 802.11g: +18/19 dBm @ 6 up to 36 Mbps, +18 dBm @ 48 Mbps, +17 dBm @
54 Mbps 802.11n: +19 dBm @ 6,5 and 13 Mbps (MCS0/8, 20 MHz), +13 dBm @ 65 and 130 Mbps (MCS7/15, 20 MHz), +17 dBm @ 15/30 Mbps
(MCS0/8, 40 MHz), +13 dBm @ 150/300 Mbps (MCS7/15, 40 MHz)

Output power at radio module, 2.4 GHz

802.11a/h: +16 bis +17 dBm @ 6 up to 24 Mbps, +16 bis +17 dBm @ 36 Mbps, +9 up to +15 dBm @ 54 Mbps 802.11n: +14 bis +17 dBm @
6,5/13 Mbps (MCS0/8, 20 MHz), +5 up to +9 dBm @ 65/130 Mbps (MCS7/15, 20 MHz), +12 up to +16 dBm @ 15/30 Mbps (MCS0/8, 40 MHz), +5
up to +9 dBm @ 150/300 Mbps (MCS7/15, 40 MHz)

Output power at radio module, 5 GHz

802.11b/g: Up to 20 dBm / 100 mW EIRP (transmission power control according to TPC)

Max. radiated power (EIRP), 2.4 GHz band

802.11a/h: Up to 30 dBm / 1000 mW or up to 36 dBm / 4000 mW EIRP (depending on national regulation on channel usage and subject to further
obligations such as TPC and DFS)

Max. radiated power (EIRP), 5 GHz band

Transmission power reduction in software in 1 dB steps to min. 0.5 dBm

Minimum transmission power

802.11b: -91 dBm @ 11 Mbps, -93 dBm @ 1 Mbps, 802.11g:, -94dBm @ 6 Mbps, -80dBm @ 54 Mbps 802.11n: -94 dBm @ 6,5 Mbps (MCS0, 20
MHz), -77 dBm @ 65 Mbps (MCS7, 20 MHz), -94 dBm @ 13 Mbps (MCS 8, 20 MHz), -77 dBm @ 130 Mbps (MCS15, 20 MHz), -89 dBm @ 15 Mbps
(MCS0, 40 MHz), -73 dBm @ 150 Mbps (MCS7, 40 MHz), -89 dBm @ 30 Mbps (MCS8, 40 MHz), -73 dBm @ 300 Mbps (MCS15, 40 MHz)

Receiver sensitivity 2.4 GHz

802.11a/h: -94 dBm @ 6 Mbps, -77 dBm @ 54 Mbps 802.11n: -93 dBm @ 6,5 Mbps (MCS0, 20 MHz), -74 dBm @65 Mbps (MCS7, 20 MHz), -93
dBm @ 13 Mbps (MCS8, 20 MHz), -74 dBm @ 130 Mbps (MCS15, 20 MHz), -90 dBm @ 15 Mbps (MCS0, 40 MHz), -72 dBm @ 150 Mbps (MCS7,
40 MHz), -90 dBm @ 30 Mbps (MCS8, 40 MHz), -72 dBm @ 300 Mbps (MCS15, 40 MHz)

Receiver sensitivity 5 GHz

Up to 13 channels, max. 3 non-overlapping (2.4 GHz band)

Radio channels 2.4 GHz

Up to 26 non-overlapping channels (available channels and further obligations such as automatic DFS dynamic channel selection depending on
national regulation)

Radio channels 5 GHz

Seamless handover between radio cells, IAPP support with optional restriction to an ARF context, IEEE 802.11d support

Roaming

Pre-authentication and PMK caching for fast roaming

WPA2 fast roaming

With background scanning, moving LANCOM 'client mode' access points pre-authenticate to alternative access points which offer a better signal
before Roaming fails

Fast client roaming

VLAN ID definable per interface, WLAN SSID, point-to-point connection and routing context (4094 IDs) IEEE 802.1q

VLAN

Dynamic VLAN assignment for target user groups based on MAC addresses, BSSID or SSID by means of external RADIUS server.

Dynamic VLAN assignment

Support of layered 802.1Q VLANs (double tagging)

Q-in-Q tagging

Simultaneous use of up to 8 independent WLAN networks per WLAN interface

Multi-SSID

Support for Internet Group Management Protocol (IGMP) in the WLAN bridge for WLAN SSIDs and LAN interfaces for specific switching of multicast
packets (devices with integrated WLAN only). Automated detection of multicast groups. Configurable action for multicast packets without registration.
Configuration of static multicast group members per VLAN ID. Configuration of query simulation for multicast membership per VLAN ID

IGMP snooping

IEEE 802.11i / WPA2 with passphrase or 802.1X and hardware-accelerated AES, closed network, WEP64, WEP128, WEP152, user authentication,
802.1x /EAP, LEPS, WPA1/TKIP

Security

Integrated RADIUS server for MAC address list management

RADIUS server

Integrated EAP server for authentication of 802.1X clients via EAP-TLS, EAP-TTLS, PEAP, MSCHAP or MSCHAPv2

EAP server

Prioritization according to Wireless Multimedia Extensions (WME, subset of IEEE 802.11e)

Quality of Service

Extension of power saving according to IEEE 802.11e by Unscheduled Automatic Power Save Delivery (equivalent to WMM Power Save). U-APSD
supports the automatic switch of clients to a doze mode. Increasmed battery lifetime for telephone calls over VoWLAN (Voice over WLAN)

U-APSD/WMM Power Save

Maximum transmit and receive rates and an individual VLAN ID can be assigned to each WLAN client (MAC address)

Bandwidth limitation

If the link of a chosen LAN interface breaks down, a WLAN module can be deactivated to let the associated clients search for a new base station

Broken link detection

Detection of rogue AP's and the channel information for all WLAN channels during normal AP operation. The Background Scan Time Interval defines
the time slots in which an AP or Router searches for a foreign WLAN network in its vicinity. The time interval can be specified in either milliseconds,
seconds, minutes, hours or days

Background scanning

LANCOM 1781EW

Features as of: LCOS 8.60