The primary options are to SPLIT the area into two or more areas, each with it's own code, or to OVERLAY a second number on top of the first.

Future Relief
317 was expected to need relief again by the 3rd Quarter of 2002 (that has now been extended until 2006), Indiana's last added code 765 is expected to need relief by the 3rd Quarter of 2004. (765 split from 317 in 1997.) 812 is expected to need its first relief ever by the 4th Quarter of 2004.

It is my hope that 317 will recieve an overlay, (NPA 463 is possible), 765 will split three ways (NPA 547 is possible), and 812 will split into two (NPA 930 is possible).

317
317 should be a near "no brainer". When the new 317 area was designed back in 1997 they started with an area where every call was local to downtown Indianapolis. The most obvious answer for 317's exhaust in 2002 is an overlay. Performing a split of such a small area just isn't logical. The only "logical" split line would be a donut arrangement where 317 would become JUST the Indianapolis rate center. However many wireless numbers are centered on Indianapolis, and that rate center itself would require further relief in record time. I look for an overlay (463 poss.) on 317.
The industry has recommended an overlay for 317, with 10D dialing to all local numbers, 11D required for long distance, and 11D permitted to any NANPA number. 7D will no longer be permitted within 317.

765
The current 765 is another large area similar to 219. I look for a split. I expect a three way split in order to give the longest life, although the general difficulty is population distribution. 765 is mostly rural.

812
No area code lasts forever. 812 was one of the original codes, the only original code left without major change in Indiana. This is an area with several "metro centers" and a lot of rural areas. Figuring out how to group the five main centers into two or three area codes should be interesting. Again, due to the large area I expect a split.