Megaco text encoding problem with embedded Signal (fwd)

[Micael Karlberg]

Hi,

Judging from the comment in the standard (below), it seems that you
are correct. That is, since both embedWithSig and embedNoSig cannot be
present and since there have a signal, then embedWithSig should be
used!

; at-most-once each of KeepActiveToken , eventDM and eventStream
; at most one of either embedWithSig or embedNoSig but not both
; KeepActiveToken and embedWithSig must not both be present
eventParameter = ( embedWithSig / embedNoSig / KeepActiveToken /
                   eventDM / eventStream / eventOther )

Thanks,

/BMK

Leigh Fiddes writes:
 > Hi,
 > 
 > I am experimenting with the Erlang Megaco stack (3.0.1) and I am having a 
 > problem encoding an
 > embedded Signal within an Event.
 > 
 > The erlang code I am using is:
 > 
 >      SRE1 = #'SecondRequestedEvent'{ pkgdName = "al/on",
 >                                      evParList = [] },
 > 
 >      SED = #'SecondEventsDescriptor'{ requestID = 2,
 >                                       eventList = [ SRE1 ] },
 > 
 >      SIG = { signal, #'Signal'{ signalName = "cg/dt",
 >                                 sigParList = [] } },
 > 
 >      RA = #'RequestedActions'{ secondEvent = SED,
 >                                signalsDescriptor = [ SIG ] },
 > 
 >      RE = #'RequestedEvent'{ pkgdName = "al/of",
 >                              eventAction = RA,
 >                              evParList = [] },
 > 
 >      EV = #'EventsDescriptor'{ requestID = 1, eventList = [ RE ] },
 > 
 >      TermID = {megaco_term_id, true, [[$*]] },
 > 
 >      AMMR = #'AmmRequest'{ terminationID = [ TermID ],
 >                            descriptors = [ { eventsDescriptor, EV } ] },
 > 
 >      CR = #'CommandRequest'{command = {modReq, AMMR}},
 > 
 >      AR = #'ActionRequest'{contextId = ?megaco_null_context_id,
 >  			  commandRequests = [CR]},
 > 
 > but the megaco message produced is:
 > Context = - {
 >          Modify = * {
 >                  Events = 1 {
 >                          al/of {
 >                                  Embed {
 >                                          Events = 2 {
 >                                                  al/on
 >                                          }
 >                                  },
 >                                  Signals {
 >                                          cg/dt
 >                                  }
 >                          }
 >                  }
 >          }
 > }
 > whereas my reading of H.248.1 say that the correct syntax for this should be:
 > 
 > Context = - {
 >          Modify = * {
 >                  Events = 1 {
 >                          al/of {
 >                                  Embed {
 >  	                                Signals {
 >          	                                cg/dt
 >                  	                },
 >                                          Events = 2 {
 >                                                  al/on
 >                                          }
 >                                  }
 >                          }
 >                  }
 >          }
 > }
 > 
 > Is my interpretation or method incorrect or is the pretty text encoder 
 > incorrect?
 > 
 > Regards,
 > Leigh
 > -- 
 > ============================================================
 > Leigh Fiddes                  email: Leigh.Fiddes@REDACTED
 > Software Development Manager          Phone: +61 3 9264 3864
 > Broadband Network Technology Division   Fax: +61 3 9264 3892
 > NEC Australia