Sip.conf SDES SRTP encryption

I have a little problem with full encryption.
Any soft phone get registered without any problems.
Making calls over sip without encryption OK.
Restart/reload OK.
When you try to call form encryption accounts wiresark shows


15340 34 <destinationIP.106> <sourceIP.105> RTP 224 PT=ITU-T G.711 PCMU, SSRC=0x7F52BD71, Seq=23615, Time=16224
15341 34 <destinationIP.106> <sourceIP.105> RTP 224 PT=ITU-T G.711 PCMU, SSRC=0x7F52BD71, Seq=23616, Time=16384
15345 34 <destinationIP.104> <sourceIP.105> SKYPE 224 Fragment/Forward/Resend Unk: 6
15346 34 <destinationIP.104> <sourceIP.105> SKYPE 224 Fragment/Forward/Resend Unk: 6
15349 34 <destinationIP.106> <sourceIP.105> RTP 224 PT=ITU-T G.711 PCMU, SSRC=0x7F52BD71, Seq=23617, Time=16544
15350 34 <destinationIP.106> <sourceIP.105> RTP 224 PT=ITU-T G.711 PCMU, SSRC=0x7F52BD71, Seq=23618, Time=16704
15361 34 <destinationIP.104> <sourceIP.105> SKYPE 224 Fragment/Forward/Resend Unk: 6

<destinationIP.104> = phone.IP
<sourceIP.105> = server.IP

Both phones send packages, BUT not received any.
Any idea what that could be?