diff --git a/doc/7-icinga-template-library.md b/doc/7-icinga-template-library.md
index 11b48e40c..17b5ac0b7 100644
--- a/doc/7-icinga-template-library.md
+++ b/doc/7-icinga-template-library.md
@@ -532,6 +532,12 @@ Custom attributes passed as [command parameters](3-monitoring-basics.md#command-
 Name            | Description
 ----------------|--------------
 ntp_address     | **Optional.** The host's address. Defaults to "$address$" if the host's `address` attribute is set, "$address6$" otherwise.
+ntp_port        | **Optional.** Port number (default: 123).
+ntp_quit        | **Optional.** Returns UNKNOWN instead of CRITICAL if offset cannot be found.
+ntp_warning     | **Optional.** Offset to result in warning status (seconds).
+ntp_critical    | **Optional.** Offset to result in critical status (seconds).
+ntp_timeoffset  | **Optional.** Expected offset of the ntp server relative to local server (seconds).
+ntp_timeout     | **Optional.** Seconds before connection times out (default: 10).
 
 
 ## <a id="plugin-check-command-ntp-peer"></a> ntp_peer
diff --git a/itl/command-plugins.conf b/itl/command-plugins.conf
index 56c717efe..51f098709 100644
--- a/itl/command-plugins.conf
+++ b/itl/command-plugins.conf
@@ -599,6 +599,12 @@ object CheckCommand "ntp_time" {
 
 	arguments = {
 		"-H" = "$ntp_address$"
+		"-p" = "$ntp_port$"
+		"-q" = "$ntp_quit$"
+		"-w" = "$ntp_warning$"
+		"-c" = "$ntp_critical$"
+		"-o" = "$ntp_timeoffset$"
+		"-t" = "$ntp_timeout$"
 	}
 
 	vars.ntp_address = "$check_address$"