Index: app_disa.c
===================================================================
--- app_disa.c	(revision 82745)
+++ app_disa.c	(working copy)
@@ -297,8 +297,11 @@
 					ast_log(LOG_DEBUG,"Successful DISA log-in on chan %s\n", chan->name);
 					continue;
 				}
-			}
-
+			} else
+				if (j == '#') { /* end of extension */
+					break;
+				}
+			
 			exten[i++] = j;  /* save digit */
 			exten[i] = 0;
 			if (!(k&1))