This sounds like a cabling issue to me. The EL160 and PortServer TS 16 have a different pinout. If you are using the same cable on the TS 16 that works on the EL160, this will not work. You can find the pinout of the TS 16 on page 2 of the following link:
ok, Maybe the problem is not described clearly, the connection lines between the PortServer TS16 works well and I have test it before.
So that is not the conncetion lines problem and I use the different lines to do the test on EL1600 and TS16.
The two lines both work well and are tested before.
Can you give me some support??