Options group defines attributes associated with direct call. It
defines complete connection in terms of path and call options. This
connection can be permanent (pvc) or, in future release, 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 bytes.