AIR FORCE. T.O.10M1-7-9-1-1 ARMY TM 11-5895-1021-14/1 MARINE CORPS TM 08045-15/1 Table 3-1.  Intercom Directory (Continued) Shelter ID Code IS320 Calling Station ID Code IS321 Calling Station ID Code IS322 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS302 1 AS302 1 AS301 2 AS301 2 IS311 3 IS311 3 IS312 4 IS312 4 IS331 5 1S331 5 IS332 6 IS332 6 IS322 7 IS321 7 Blank 8 Blank 8 AS401 9 AS401 9 AS402 10 AS402 10 IS411 11 IS411 11 IS412 12 IS412 12 IS421 13 IS421 13 IS422 14 IS422 14 IS431 15 IS431 15 IS432 16 IS432 16 Shelter ID Code IS330 Calling Station ID Code IS331 Calling Station ID Code IS332 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS302 1 AS302 1 AS301 2 AS301 2 IS311 3 IS311 3 IS312 4 IS312 4 IS321 5 IS321 5 IS322 6 IS322 6 IS332 7 IS331 7 Blank 8 Blank 8 AS401 9 AS401 9 AS402 10 AS402 10 IS411 1 IS411 11 IS412 12 IS412 12 IS421 13 IS421 13 IS422 14 IS422 14 IS431 15 IS431 15 IS432 16 IS432 16 Change 1  3-8