| mgcp.messagecount | MGCP Message Count | Unsigned 32-bit integer |
| mgcp.param.bearerinfo | BearerInformation (B) | String |
| mgcp.param.callid | CallId (C) | String |
| mgcp.param.capabilities | Capabilities (A) | String |
| mgcp.param.connectionid | ConnectionIdentifier (I) | String |
| mgcp.param.connectionmode | ConnectionMode (M) | String |
| mgcp.param.connectionparam | ConnectionParameters (P) | String |
| mgcp.param.detectedevents | DetectedEvents (T) | String |
| mgcp.param.digitmap | DigitMap (D) | String |
| mgcp.param.eventstates | EventStates (ES) | String |
| mgcp.param.extention | Extention Parameter (X-*) | String |
| mgcp.param.invalid | Invalid Parameter | String |
| mgcp.param.localconnectionoptions | LocalConnectionOptions (L) | String |
| mgcp.param.notifiedentity | NotifiedEntity (N) | String |
| mgcp.param.observedevents | ObservedEvents (O) | String |
| mgcp.param.quarantinehandling | QuarantineHandling (Q) | String |
| mgcp.param.reasoncode | ReasonCode (E) | String |
| mgcp.param.reqevents | RequestedEvents (R) | String |
| mgcp.param.reqinfo | RequestedInfo (F) | String |
| mgcp.param.requestid | RequestIdentifier (X) | String |
| mgcp.param.restartdelay | RestartDelay (RD) | String |
| mgcp.param.restartmethod | RestartMethod (RM) | String |
| mgcp.param.rspack | ResponseAck (K) | String |
| mgcp.param.secondconnectionid | SecondConnectionID (I2) | String |
| mgcp.param.secondendpointid | SecondEndpointID (Z2) | String |
| mgcp.param.signalreq | SignalRequests (S) | String |
| mgcp.param.specificendpointid | SpecificEndpointID (Z) | String |
| mgcp.req | Request | Boolean |
| mgcp.req.endpoint | Endpoint | String |
| mgcp.req.verb | Verb | String |
| mgcp.rsp | Response | Boolean |
| mgcp.rsp.rspcode | Response Code | String |
| mgcp.rsp.rspstring | Response String | String |
| mgcp.transid | Transaction ID | String |
| mgcp.version | Version | String |