My first mistake was that i hadn't understand that the picture "TS480 local-remote+extra.gif" describes is only the remote side. So all are more clear now.
At REMOTE side...
1. you use the com2 of the rrc-1258 to control the amplifier
2. you use the com1 of the rrc-1258 to control the rotator
3. you connect the aux/mic of rrc1258 to mic of 480 body
4. you connect the ttl port of rrc1258 to ttl of 480 body
5. you connect your first ethernet to com device (pins 4,7,5) with optocouplers' interface for ptt and cw. cw goes to cw-key of 480 body. ptt goes 6pin mini-din of 480 body
6. second ethernet to com device makes (like in step 5) the fsk and ptt. We connect it to pin8 mini din in 480 body.
7. sounds of 8 pin mini-din goes via 1:1 transformers to line in and line out.
8. you connect the com port of 480 body via ttl-rs232 to the web ethernet switch 1216.
9. Looking more carefully the 2nd picture you connect the IO port of rrc1258 via optocouplers 4n35 to relays. So you can control the k9ay loop.
Some questions now...
1.why we have 2 ptt? what eth com1-6pin minidin ptt does and what the 8pin ptt (may i suppose this is the amplifier ptt?)?
2.where line in and out goes? Or better how the sound transferred to control side?
3. the ttl-rs232 between 480 com and web switch 1216 does the band decoding? or something else?
4. Can i use the IO port and the k9ay trick to choose 4 beverages? or to switch a 4 square? Is there any other way to do this?
5. According to your last reply, it is better to use separate power supplies. So i need 3 ps. Two (2) at remote side and one at control side. Right?
73 Kostas SV1DPI