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 IS230 Calling Station ID Code IS231 Calling Station ID Code IS232 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS202 1 AS202 1 AS201 2 AS201 2 IS211 3 IS211 3 IS212 4 IS212 4 IS221 5 IS221 5 IS222 6 IS222 6 IS232 7 1S231 7 Blank 8 Blank 8 AS101 9 AS101 9 AS102 10 AS102 10 IS111 11 IS111 11 IS112 12 IS112 12 IS121 13 IS121 13 IS122 14 IS122 14 IS131 15 IS131 15 IS132 16 IS132 16 Shelter ID Code IS310 Calling Station ID Code IS311 Calling Station ID Code IS312 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS302 1 AS302 1 AS301 2 AS301 2 IS321 3 IS321 3 IS322 4 IS322 4 IS331 5 IS331 5 IS332 6 IS332 6 IS312 7 IS311 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 Change 1  3-7