update

codecs-sync-design.md

@@ -60,6 +60,7 @@ sequenceDiagram
 
 ### Tasks need to be done
 #### shared memory among voicemngr/dectmngr/chan-voicemngr
+ - #TODO: structure design, need consider parallel calls happened at the same time 
  - extension_cap: cap list for each extension; R/W dectmngr, voicemngr; R chan-voicemngr.
  - out_request_cap: the cap list of the initiator for the outgoing request; R/W voicemngr,dectmngr; R chan-voicemngr.
  - in_request_cap: the cap list of the initiator for the incoming request; W/R chan-voicemngr; R voicemngr,dectmngr