diff --git a/dahdi_maint.c b/dahdi_maint.c
index 4dd41a9..829d4ea 100644
--- a/dahdi_maint.c
+++ b/dahdi_maint.c
@@ -53,12 +53,14 @@ void display_help(char *argv0, int exitcode)
 	fprintf(stderr, "        -h, --help		display help\n");
 	fprintf(stderr, "        -s, --span <span num>	specify the span\n");
 	fprintf(stderr, "        -l, --loopback <localhost|networkline|"\
-						"networkpayload|off>\n"\
+						"networkpayload|loopup|"\
+						"loopdown|off>\n"\
 			"\t\tlocalhost - loop back towards host\n"\
 			"\t\tnetworkline - network line loopback\n"\
 			"\t\tnetworkpayload - network payload loopback\n"\
 			"\t\tloopup - transmit loopup signal\n"\
-			"\t\tloopdown - transmit loopdown signal\n");
+			"\t\tloopdown - transmit loopdown signal\n"\
+			"\t\toff - end loopback mode\n");
 	fprintf(stderr, "        -i, --insert <fas|multi|crc|cas|prbs|bipolar>"\
 			"\n\t\tinsert an error of a specific type\n");
 	fprintf(stderr, "        -r, --reset		"\
@@ -107,10 +109,10 @@ int main(int argc, char *argv[])
 	while ((c = getopt_long(argc, argv, "hj:l:p:s:i:g:r",
 				long_options, &option_index)) != -1) {
 			switch (c) {
-			case 'h': /* local host loopback */
+			case 'h':
 				display_help(argv[0], 0);
 				break;
-			case 'l': /* network line loopback */
+			case 'l': /* loopback */
 				larg = optarg;
 				doloopback = 1;
 				break;
diff --git a/doc/dahdi_maint.8 b/doc/dahdi_maint.8
new file mode 100644
index 0000000..ce05a40
--- /dev/null
+++ b/doc/dahdi_maint.8
@@ -0,0 +1,62 @@
+.TH "DAHDI_MAINT" "8" "9 Sep 2011" "" ""
+
+.SH NAME
+dahdi_maint \- Sets Dahdi spans into maintenance mode, e.g.: loopback
+.SH SYNOPSIS
+
+.B dahdi_maint \-s \fInum\fB [options]
+.B dahdi_maint <\-h|\-\-help> 
+
+.SH DESCRIPTION
+
+dahdi_maint uses the DAHDI_MAINT interface to set a Dahdi span (port
+of a Dahdi adapter card) into loopback mode or similar maintenance mode.
+
+.SH OPTIONS
+.B \-s \-\-span \fInum\fR
+.RS
+The span number. Required.
+.RE
+
+.B \-l \-\-loopback <localhost|networkline|networkpayload|loopup|loopdown|off>
+.RS
+Loopback type. One of:
+.IP localhost 4
+loop back towards host
+.IP networkline 4
+network line loopback
+.IP networkpayload 4
+network payload loopback
+.IP loopup 4
+transmit loopup signal
+.IP loopdown 4
+transmit loopdown signal
+.IP off 4
+end loopback mode
+.RE
+
+.B \-i \-\-insert <fas|multi|crc|cas|prbs|bipolar>
+.RS
+Insert an error of a specific type
+.RE
+
+.SH EXAMPLES
+Enable network line loopback on span 1:
+
+  dahdi_maint -s 1 --loopback networkline
+
+Disable network line loopback on span 1:
+
+  dahdi_maint -s 1 --loopback off
+
+
+.SH SEE ALSO
+.PP
+dahdi_tool(8), dahdi_cfg(8), asterisk(8).
+
+.SH AUTHOR
+.PP
+This manual page was written by Tzafrir Cohen <tzafrir.cohen@xorcom.com>.
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU General Public License, Version 2 any later
+version published by the Free Software Foundation.