Cisco Cisco Aironet 1200 Access Point
7
Release Notes for Cisco Aironet Access Points for Cisco IOS Release 12.3(8)JA
OL-8237-01
New Features
Packet of Disconnect
This feature is implemented per the standards defined in RFC 3576 and offers service providers the
ability to terminate a user session from a RADIUS server.
ability to terminate a user session from a RADIUS server.
Wi-Fi Multimedia TSPEC Call Admission Control
This quality of service (QoS) feature helps ensure predictable voice quality and encourages roaming by
managing the total voice load on the access point. Call Admission Control (CAC) keeps the number of
active voice calls from exceeding the configured limits of an access point. With this feature, phones are
always connected to an access point, but not necessarily on an active call. This helps ensure that the voice
quality of existing calls is maintained.
managing the total voice load on the access point. Call Admission Control (CAC) keeps the number of
active voice calls from exceeding the configured limits of an access point. With this feature, phones are
always connected to an access point, but not necessarily on an active call. This helps ensure that the voice
quality of existing calls is maintained.
Gratuitous Probe Response for Dual-Mode Phones
This feature conserves the battery power of a dual-mode (cellular and WLAN) phone by providing a
packet that is transmitted from the access point at a predefined high-rate time interval. With Gratuitous
Probe Response, the phone is not required to listen for beacons on each channel to detect the presence
of a WLAN while in cellular mode. This allows the phone to spend less time detecting a WLAN.
packet that is transmitted from the access point at a predefined high-rate time interval. With Gratuitous
Probe Response, the phone is not required to listen for beacons on each channel to detect the presence
of a WLAN while in cellular mode. This allows the phone to spend less time detecting a WLAN.
Unscheduled Automatic Power Save Delivery
This QoS feature extends the battery life of mobile clients and reduces the latency of traffic flow over
the wireless media. Since it does not require the client station to send a poll for each individual packet
buffered at the access point, this feature allows delivery of multiple downlink packets by sending a single
uplink trigger packet. Unscheduled Automatic Power Save Delivery (UPSD) is enabled when Wi-Fi
Multimedia (WMM) is enabled on the radio interface.
the wireless media. Since it does not require the client station to send a poll for each individual packet
buffered at the access point, this feature allows delivery of multiple downlink packets by sending a single
uplink trigger packet. Unscheduled Automatic Power Save Delivery (UPSD) is enabled when Wi-Fi
Multimedia (WMM) is enabled on the radio interface.
Note
In Cisco IOS Software Release 12.3(8)JA, UPSD supports only the access point role. Repeaters, bridges,
and workgroup bridge roles are not supported.
and workgroup bridge roles are not supported.
VoIP Packet Handling
This feature improves the quality of VoIP packet handling on access points by enhancing 802.11 MAC
behavior for lower latency. It provides enhanced retry and rate shifting algorithms that reduce congestion
on wireless networks.
behavior for lower latency. It provides enhanced retry and rate shifting algorithms that reduce congestion
on wireless networks.
VoWLAN Metrics
This feature provides diagnostic information pertinent to VoIP performance on the WLAN and aids in
determining whether problems are being introduced by the WLAN or the wired network. VoWLAN
metrics supported include measurements of jitter and packet loss on a location, access point, or client
basis, as well as information on client roaming and roam latency.
determining whether problems are being introduced by the WLAN or the wired network. VoWLAN
metrics supported include measurements of jitter and packet loss on a location, access point, or client
basis, as well as information on client roaming and roam latency.