PMON hangs from Teradata Manager

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PMON hangs from Teradata Manager

HI,
I am facing a weird situation, when I start the PMON session from teradata manager and hit connect, it hangs with a ".....working" status . It keeps hanging forever, until I "End Program" it. I wonder, is this some specific network port, PMON looks for, which our network folks haven't opened.

Does, somebody experienced, same type of problem, somewhere?

Thanks