The Options group defines attributes associated with a direct call. It
defines a complete connection in terms of path and call options.
This connection can be permanent (PVC) or switched (SVC). It can
have facilities. The total number of bytes of facilities including the
facility codes, and all of the facility data from all of the four classes
of facilities:
CCITT_Facilities
DTE_Facilities
National_Facilities
International_Facilities
must not exceed 512.