Remote Printer - What do I ask Network guy to check on his side?

Still at V4R5 and still operator-less.

We have several Intermec 3400's setup as remote writers.
CRTOUTQ with connection type *IP and the IP address.  Added another
yesterday.

The As/400 print stays in send mode and this error appears in QSPL  job:

TCP3436
Message . . . . :   No response from remote host system within open
time-out.
Cause . . . . . :   An open request was sent to a remote host system, but
that
  host system did not respond to the request before the open time-out
expired.
  This may be due to the fact that the TCP/IP services are not currently

  available on the remote host system.


The network admin says he can ping it so there's no problem.  VFYTCPCNN
from AS/400 also works.  Where else should we be looking?

Thanks much,
Bonnie Lokenvitz
Engineered Polymers