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 IS120 Calling Station ID Code IS121 Calling Station ID Code IS122 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS102 1 AS102 1 AS101 2 AS101 2 IS111 3 IS111 3 IS112 4 IS112 4 IS131 5 IS131 5 IS132 6 IS132 6 IS122 7 IS121 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 Shelter ID Code IS130 Calling Station ID Code IS131 Calling Station ID Code 1S132 Destination Station Pushbutton Destination Station Pushbutton ID Code Number ID Code Number AS102 1 AS102 1 AS101 2 AS101 2 IS111 3 IS111 3 IS112 4 IS112 4 IS121 5 IS121 5 IS122 6 IS122 6 IS132 7 IS131 7 Blank 8 Blank 8 AS201 9 AS201 9 AS202 10 AS202 10 IS211 1 IS211 11 IS212 12 IS212 12 IS221 13 IS221 13 IS222 14 IS222 14 IS231 15 IS231 15 IS232 16 IS232 16 Change 1  3-5