diff --git a/configs/sip.conf.sample b/configs/sip.conf.sample
index da7c94cb3b..4fb600c3d8 100644
--- a/configs/sip.conf.sample
+++ b/configs/sip.conf.sample
@@ -340,7 +340,8 @@ srvlookup=yes			; Enable DNS SRV lookups on outbound calls
 ;subscribecontext = default	; Set a specific context for SUBSCRIBE requests
 				; Useful to limit subscriptions to local extensions
 				; Settable per peer/user also
-;notifyringing = yes		; Notify subscriptions on RINGING state (default: no)
+;notifyringing = yes           ; Control whether subscriptions already INUSE get sent
+                               ; RINGING when another call is sent (default: no)
 ;notifyhold = yes		; Notify subscriptions on HOLD state (default: no)
 				; Turning on notifyringing and notifyhold will add a lot
 				; more database transactions if you are using realtime.