VIEW Configuration Guide: Cisco WLAN Controllers (Virtual, Modules, and Standalone) with APs
1725-86192-000_AA.docx
August 2013 7
** Only Release 3.0 capable Spectralink 8020/8030 handsets support WPA2-Enterprise, Wi-Fi Standard
QoS, and CCXv4 (Cisco Compatible Extensions). Release 3.0 capable handset types connect to PBX’s
that support IP telephony. Release 3.0 capabilities are not available for Spectralink 8020/8030 handsets
connecting to PBXs using the TDM protocol through a Spectralink Telephony Gateway (handset type 30
on the 8020/8030).
Known Limitations
• Heavy multicast, broadcast or push-to-talk (PTT) traffic may impair voice quality on 6.0 and 7.0
versions.
• When Spectralink Voice Priority (SVP) is enabled for Spectralink 8020/8030 in the EDCA
parameters setting, the 802.11n capabilities will be disabled on that radio when using Cisco 6.0
software versions (see Section 1: Configuring for SVP Operation → AP Configuration). It is
therefore recommended to deploy handsets using SVP on a different radio than 802.11n clients.
• Fast Transition Roaming (802.11r) is not yet supported by the handsets
• Multicast by VLAN is not compatible with the PTT feature in the handsets.
• When using 7.0 versions, 5 GHz radio, 1142 AP’s, and 80xx handsets, CSD must be disabled on
the AP’s.
• When using 1142 AP’s, A-MPDU aggregation must be disabled if 11n is enabled
• A-MSDU aggregation must be disabled if 11n is enabled
• In the controller software versions considered in this document, there is an issue related to band
steering that can cause slow roaming on the 2.4 GHz band in the 84-Series handsets when both
radios are active in the handset.
• In the WMM/QoS mode, it is important to use the Static CAC Method rather than the Load Based
CAC Method.
• Cisco WLC Version 7.4.100.0 is not compatible with Spectralink handsets.
• The handsets have not yet been tested in the presence of active 802.11ac clients.
Spectralink References
All Spectralink documents are available at http://support.spectralink.com.
