UC520 can't conference more than 3 callers.

(1) These commands must be added in config mode
sccp local Vlan10
sccp ccm 172.16.1.1 identifier 1 version 6.0
sccp
!
sccp ccm group 1
bind interface Vlan10
associate ccm 1 priority 1
associate profile 1 register ConfDSP
!
dspfarm profile 1 conference
codec g711ulaw
maximum sessions 1
associate application SCCP

(2)Then add these commands to telephony-service
!
telephony-service
sdspfarm units 1
sdspfarm tag 1 ConfDSP
conference hardware

(3) last create the ephone-dns/ I also added a meet-me number

ephone-dn 6 octo-line
number AAAA
conference ad-hoc
no huntstop
!
!
ephone-dn 7 octo-line
number 3310
conference meetme
no huntstop

Wireless issue: Dot11radio stuck in reset status

This recently happened to me on at UC520 the had wireless. The problem I ran into was I created ssid in the wrong order so it was stuck in reset.
WRONG way:
1.Cisco(conf)#dot11 ssid Cisco-test
2. Then I went to Cisco(conf)# int Dot11radio 0/5/0, then put ssid under the interface. This is what caused it to be in stuck in reset.

RIGHT way:
1.Cisco(conf)# int Dot11radio 0/5/0, then you create ssid under the interface.
2. Cisco(conf)#dot11 ssid Cisco-test
3. Cisco(conf-ssid)#vlan 1
After that your Dot11 radio should be up, up status.