[Asterisk-Users] MGCP parameters

[Leonardo J. Tramontina]

Sirs,
According to RFC 2705 (MGCP), these are the parameters that are used in the 
transactions:

       ReturnCode,
       Connection-parameters
       <-- DeleteConnection(CallId,
                            EndpointId,
                            ConnectionId,
                            [Encapsulated NotificationRequest,]
                            [Encapsulated EndpointConfiguration])
           ReturnCode,
           <-- DeleteConnection( CallId,
                                 EndpointId,
                                 ConnectionId,
                                 Reason-code,
                                 Connection-parameters)
           ReturnCode,
           <-- DeleteConnection( CallId,
                                 EndpointId)
           ReturnCode,
           <-- DeleteConnection( EndpointId)
             ReturnCode,
               EndPointIdList|{
               [RequestedEvents,]
               [DigitMap,]
               [SignalRequests,]
               [RequestIdentifier,]
               [NotifiedEntity,]
               [ConnectionIdentifiers,]
               [DetectEvents,]
               [ObservedEvents,]
               [EventStates,]
               [BearerInformation,]
               [RestartReason,]
               [RestartDelay,]
               [ReasonCode,]
               [Capabilities]}
                       <--- AuditEndPoint(EndpointId,
                                                [RequestedInfo])
             ReturnCode,
             [CallId,]
             [NotifiedEntity,]
             [LocalConnectionOptions,]
             [Mode,]
             [RemoteConnectionDescriptor,]
             [LocalConnectionDescriptor,]
             [ConnectionParameters]
                       <--- AuditConnection(EndpointId,
                                        ConnectionId,
                                        RequestedInfo)

         ReturnCode,
         [NotifiedEntity]
               <------- RestartInProgress ( EndPointId,
                                            RestartMethod,
                                            [RestartDelay,]
                                            [Reason-code])

          ReturnCode
          <-- EndpointConfiguration( EndpointId,
                                     BearerInformation)

      ReturnCode
      <-- NotificationRequest( EndpointId,
                               [NotifiedEntity,]
                               [RequestedEvents,]
                               RequestIdentifier,
                               [DigitMap,]
                               [SignalRequests,]
                               [QuarantineHandling,]
                               [DetectEvents,]
                               [encapsulated EndpointConfiguration])

              ReturnCode
              <-- Notify( EndpointId,
                          [NotifiedEntity,]
                          RequestIdentifier,
                          ObservedEvents)
           ReturnCode,
           ConnectionId,
           [SpecificEndPointId,]
           [LocalConnectionDescriptor,]
           [SecondEndPointId,]
           [SecondConnectionId]
           <--- CreateConnection(CallId,
                                 EndpointId,
                                 [NotifiedEntity,]
                                 [LocalConnectionOptions,]
                                 Mode,
                                 [{RemoteConnectionDescriptor |
                                   SecondEndpointId}, ]
                                 [Encapsulated NotificationRequest,]
                                 [Encapsulated EndpointConfiguration])

     ReturnCode,
     [LocalConnectionDescriptor]
      <--- ModifyConnection(CallId,
                            EndpointId,
                            ConnectionId,
                            [NotifiedEntity,]
                            [LocalConnectionOptions,]
                            [Mode,]
                            [RemoteConnectionDescriptor,]
                            [Encapsulated NotificationRequest,]
                            [Encapsulated EndpointConfiguration])

My questions:
1) I am using Asterisk and a softphone called MGCP eyeP Phone. I was 
watching the traffic between them at Ethereal and observed that some of them 
have extra parameters. Example: CreateConnection has "Request Identifier 
(X)", that is not described on RFC 2705. Should I ignore or consider it?

2) There are some parameters that don't have identifier? I mean, "Request 
Identifier" is "X:"; "Observed Events" is "O: "; "Call ID" is "C: "... These 
are them:
- "Notified Entity"
- "Remote Connection Descriptor"
- "encapsulated Endpoint Configuration"
- "Second Endpoint Id"
- "encapsulated Notification Request"

2.1) How can I identify them when they exist?
2.2) What means "encapsulated" parameters??

Thanks in advance,
Leonardo
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