I am trying to configure an Aruba 7210 Mobility Controller for VoWLAN with Spectralink 8440 handsets. I've followed the Spectralink "VIEW CERTIFIED CONFIGURATION GUIDE - SpectraLink 8020/8030 and 8400 Series Wireless Telephones with Aruba Networks" document, but the handsets are intermittently unable to send/receive traffic. They appear to join the network properly, but the handset will display “network down” every few seconds. While on a call, the audio drops and resumes in sync with the frequency of the “network down” message.
I think I've narrowed down the cause of this to the EDCA settings. The configuration guide instructs to create station and ap EDCA profiles with mandatory admission control enabled. All other EDCA settings in the profiles are left as default. The EDCA profiles are then applied to the SSID profile. I have tried leaving the SSID profile with the EDCA profiles as part of its settings, with mandatory admission control turned off within each EDCA profile, but this does not work. The only way to get a stable connection is to set no EDCA profile on the SSID profile. I have also tried enabling and disabling the “AC Required” setting on the handset with all combinations of the settings already mentioned above.
The Spectralink handset logs contain a lot of the following entries:
processEvent:Initiating handoff due to TSPEC failure for UP :4
processEvent:Retrying control TSPEC with UP:4
Thanks in advance.
#7210