At first I saw a rumour on a dvb web site that this switch would let pass diseqc commands throught it. This would be a first because normally you can't place a 22khz switch before a diseqc switch. This is the standard way to do it.
Graphs/16 LNB ON 1 RECEIVER WITH 8 22 KHz SWITCH.pdf
Now with the Ecoda switch you don't have to place 8 22khz switches to obtain the same result. You just place the Ecoda switch before the diseqc switch.
This allows you to make some interesting setups.
Graphs/16 LNB ON 1 RECEIVER WITH 1 22 KZH SWITCH.pdf
Graphs/16 LNBs with multiswitches and 22 khz switches.pdf
You can even place a diseqc on port 0 of the switch.
Graphs/diseqc motor + bud + fixed dishes on 1 receiverf.pdf