There is an AppNotes for Ascom on Aruba Networks: http://www.arubanetworks.com/pdf/partners/AppNote_Ascom.pdf. I have attached an AppNote for Ascom on Aruba Instant.
Issues that I have seen the lately with Ascom on Aruba:
- The Ascom i62 show significantely lower signal strengths than other devices. I have seen values up to 12 dB less signal than on a reference USB WLAN dongle. So you should prepare for stronger signals (however when moving from another WLAN solution that should not be different).
- Make sure for roaming that on every location, the phone has a roaming candidate with enough signal. Ascom scans every 5 seconds, so a roaming candidate should be available long enough at decent strength for roaming during a walk. I have seen constructions where AP's come and go within a few meters, roaming will be poor. Ascom advises to put AP's in edges and crossings of corridors (http://www.ascomwireless.com/pdf/guide/vowifi/ascom_vowifi_sp_92408gb.pdf).
- Make sure that the phone power is set to max if you experience connectivity/roaming issues.
- Update the Ascom firmware to a recent version. Older firmwares on the phone may provide poor results.
- Enable 802.11d (broadcast of regulatory domain information), otherwise the phone may be unwilling to connect on 5 GHz.
Herman