Clarify the need for numeric parking positions (imported from 1.2)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@17152 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/features.conf.sample

@@ -4,7 +4,9 @@
 
 [general]
 parkext => 700			; What extension to dial to park
-parkpos => 701-720		; What extensions to park calls on
+parkpos => 701-720		; What extensions to park calls on. These needs to be
+				; numeric, as Asterisk starts from the start position
+				; and increments with one for the next parked call.
 context => parkedcalls		; Which context parked calls are in
 ;parkingtime => 45		; Number of seconds a call can be parked for 
 				; (default is 45 seconds)
@@ -14,12 +16,14 @@ context => parkedcalls		; Which context parked calls are in
 ;parkedplay = caller		; Who to play the courtesy tone to when picking up a parked call
 				; one of: parked, caller, both  (default is caller)
 ;adsipark = yes			; if you want ADSI parking announcements
-;findslot => next		; Continue to the 'next' parking space. Defaults to 'first' available
+;findslot => next		; Continue to the 'next' free parking space. 
+				; Defaults to 'first' available
+
 ;transferdigittimeout => 3	; Number of seconds to wait between digits when transfering a call
 				; (default is 3 seconds)
 ;xfersound = beep		; to indicate an attended transfer is complete
 ;xferfailsound = beeperr	; to indicate a failed transfer
-;pickupexten = *8		; Configure the pickup extension  (default is *8)
+;pickupexten = *8		; Configure the pickup extension. (default is *8)
 ;featuredigittimeout = 500	; Max time (ms) between digits for 
 				; feature activation  (default is 500 ms)