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 AS400 Calling Station ID Code AS401 Calling Station ID Code AS402 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number IS411 1 IS411 1 IS412 2 IS412 2 IS421 3 IS421 3 IS422 4 IS422 4 IS431 5 IS431 5 IS432 6 IS432 6 IS311 7 IS311 7 IS312 8 IS312 8 IS321 9 IS321 9 IS322 10 IS322 10 IS331 11 IS331 11 IS332 12 IS332 12 AS402 13 AS401 13 AS301 14 AS302 14 AS201 15 AS202 15 AS101 16 AS102 16 Shelter ID Code IS110 Calling Station ID Code IS111 Calling Station ID Code IS112 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS102 1 AS102 1 AS101 2 AS101 2 IS121 3 IS121 3 IS122 4 IS122 4 IS131 5 IS131 5 IS132 6 IS132 6 IS112 7 IS111 7 Blank 8 Blank 8 AS201 9 AS201 9 AS202 10 AS202 10 IS211 11 IS211 11 IS212 12 IS212 12 IS221 13 IS221 13 IS222 14 IS222 14 IS231 15 IS231 15 IS232 16 IS232 16 Change 1  3-4