diff --git a/build/misc.tcl b/build/misc.tcl
index 65c6b556..adae182c 100644
--- a/build/misc.tcl
+++ b/build/misc.tcl
@@ -120,6 +120,9 @@ respond "*" ":midas sysbin;_lmio1; door\r"
 expect ":KILL"
 respond "*" ":link device; chaos door, sysbin; door bin\r"
 
+respond "*" ":midas sys3; ts esce_sysen1; esce\r"
+expect ":KILL"
+
 respond "*" ":midas sysbin;chtn_sysnet;chtn\r"
 expect ":KILL"
 
diff --git a/doc/programs.md b/doc/programs.md
index 029e28d2..2c00b05f 100644
--- a/doc/programs.md
+++ b/doc/programs.md
@@ -81,6 +81,7 @@
 - ECHO, Chaosnet echo server.
 - ELIZA, the original psychiatrist game.
 - EMACS, editor.
+- ESCE, call the elevator.
 - EXECVT, convert 20x EXE (SSAVE) file to ITS BIN (PDUMP) file.
 - EXPN/VRFY, query remote SMTP server.
 - FACTOR, factor integers.
diff --git a/src/sysen1/esce.12 b/src/sysen1/esce.12
new file mode 100755
index 00000000..77bd1e09
--- /dev/null
+++ b/src/sysen1/esce.12
@@ -0,0 +1,107 @@
+; -*- MIDAS -*-
+
+TITLE Call me an elevator
+
+a=1
+b=2
+c=3
+d=4
+e=5
+t=10
+tt=11
+j=14
+p=17
+
+DEFINE SYSCAL OP,ARGS
+	.CALL  [SETZ ? sixbit /OP/ ? args ((SETZ))]
+TERMIN
+
+ttyo=13
+chaosi=14
+chaoso=15
+
+.INSRT SYSTEM;CHSDEF >
+
+packet:	block %CPMXW
+
+DEFINE TYPE &string
+       movei t,<.length string>
+       move tt,[440700,,[ascii string]]
+       syscal SIOT,[%climm,,ttyo ? tt ? t]
+         .lose %lsfil
+TERMIN
+
+go:	syscal OPEN,[%clbit,,.uao\%tjdis ? %climm,,ttyo ? [sixbit /TTY/]]
+	  .lose %lsfil
+	syscal CHAOSO,[%climm,,chaosi ? %climm,,chaoso]
+	  .lose %lsfil
+	movei t,%corfc		   ;Prepare to RFC
+	dpb t,[$cpkop packet]
+	movei t,6		   ;six bytes of data
+	dpb t,[$cpknb packet]
+	movei t,2026		   ;AI is the destination
+	dpb t,[$cpkda packet]
+	move a,[440700,,[asciz /DOOR /]]
+	move b,[441000,,packet+%cpkdt]
+datlop:	ildb t,a		   ;get a character
+	jumpe t,chkjcl		   ;break out of loop on NUL
+	idpb t,b		   ;put the data in the packet
+	jrst datlop		   ;get more
+
+chkjcl:	.break 12,[..rjcl,,jclbuf] ;get JCL
+	move j,[440700,,jclbuf]
+jcloop:	ildb t,j		   ;get the first character, if any
+	caie t,40
+	  cain t,^I
+	    jrst jcloop
+	caie t,"E		   ;if it's E, check TTY num to get floor
+	  cain t,"e		   ;  ("e too!)
+	    jrst haktty
+	cail t,"a		   ;Is it lower-case?
+	  subi t,40		   ;  uppercasify
+gotit:	idpb t,b		   ;put it in the packet
+	syscal PKTIOT,[%climm,,chaoso ? %climm,,packet]
+	  .lose %lsfil
+	syscal PKTIOT,[%climm,,chaosi ? %climm,,packet]	;get answer
+	  .lose %lsfil
+	ldb t,[$cpkop packet]	   ;get opcode of reply
+	cain t,%coans		   ;Is it an ANS?
+	  jrst done		   ;  yes, all OK!
+	type /ALost.  Reason = "/
+	move a,[441000,,packet+%CPKDT00]	   ;ptr to data area
+	ldb b,[$cpknb packet]	   ;# of bytes to type
+	jumpe b,[ type /none"./
+		  .logout 1,]
+errlop:	ildb t,a		   ;get character of error message
+	.iot ttyo,t		   ;type it
+	sojg b,errlop		   ;and loop till end
+
+	type /"./
+	.logout 1,
+
+done:	type /AThe deed is done!/
+	.logout 1,
+
+
+haktty:	.suset [.rcnsl,,t]
+IRP	x,,[21,22,23,26,27,30,31,32,33,34]
+	cain t,x
+	  jrst 8th
+TERMIN
+IRP	x,,[0,23]
+	cain t,x
+	  jrst 9th
+TERMIN
+	type /ACan't do it, sorry./
+	.logout 1,
+
+8th:	movei t,"8		   ;Call it to the 8th floor
+	jrst gotit		   ;go send it
+
+9th:	movei t,"9		   ;Call it to the 9th floor
+	jrst gotit		   ;go send the packet
+
+
+JCLBUF:	block 100
+	-1
+END GO
\ No newline at end of file