Digipassport is unable to connect to console port on acme SBC 4500

We have already tried straight through cables, crossover cables, rollover cables. It does not work.
Any help is highly appreciated.

Do you get connected to the port or is there an error? Are you able to communicate with SBC 4500 port using a PC/another serial connection?

Do you have the pinouts for the SBC 4500 console port?