sample communications pblm in gold edition v6.007 not working

The example program listed on page 394 in the "commlib" section of the gold edition v6 produces the error:

"No such file [9003].
occurred at line 19 in com_open
called from line 11 in main program"

LIBRARY "Commlib.trc"
CALL com_open( #1, 1, 14400, "")
CALL com_sendCR("ATD 6436300")

Anyone have this pblm with solution. These lines should connect to a comm port and setup a comm buffer.