It was not difficult))
sccp local GigabitEthernet0/1
sccp ccm 10.206.1.230 identifier 3 priority 3 version 4.1
sccp ccm 172.20.0.2 identifier 1 priority 1 version 4.1
sccp ccm 172.20.0.1 identifier 2 priority 2 version 4.1
sccp
!
sccp ccm group 2
bind interface GigabitEthernet0/1
associate ccm 3 priority 1
associate profile 2 register 2821-BM
switchback method graceful
!
sccp ccm group 1
bind interface GigabitEthernet0/1
associate ccm 2 priority 1
associate ccm 1 priority 2
associate profile 1 register 2821-BMORSK
switchback method graceful
!
dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
codec g729br8
maximum sessions 4
associate application SCCP
!
dspfarm profile 2 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
codec g729br8
maximum sessions 4
associate application SCCP
active sessions exist from both CUCMs.