These access options (telnet/http/https/ssh) can be enabled under wtp-profile
# config wireless-controller wtp-profile
(wtp-profile) # edit FAP221C-default
(FAP221C-default) # set allowaccess telnet http https ssh
(FAP221C-default) # end
By default, these options have been disabled for security purpose.
You can also overwrite these settings on a per access point (WTP) level by editing the WTP setting
config wireless-controller wtp
(wtp) # edit FP221B3X13009219
(FP221B3X13009219) # set override-allowaccess enable
(FP221B3X13009219) # set allowaccess telnet http https ssh
(FP221B3X13009219) #end