McDewey

applications must open the port. At present, most of the applcations open statically registered terminals when they receive RTP events. If an application tries to register a terminal, which is already registered with registration type as CiscoBaseMediaTerminal.DYNAMIC_MEDIA_REGISTRATION_FOR_GET_PORT_SUPPORT or CiscoBaseMediaTerminal.STATIC_MEDIA_REGISTRATION_FOR_GET_PORT_SUPPORT, with a different registration type, JTAPI throws a PlatformException with the error code as CiscoJtapiException.CTIERR_MEDIA_ALREADY_TERMINATED_DYNAMIC_GETPORT_SUPPORT or CiscoJtapiException.CTIERR_MEDIA_ALREADY_TERMINATED_STATIC_GETPORT_SUPPORT, respectively. A new API, isRTPRequired(), is also exposed on the interface CiscoMediaOpenLogicalChannelEv to indicate if the applications must set the RTP parameters or not when they receive this event. Applications must check the API when they recieve the CiscoMediaOpenLogicalChannelEv and set the RTP Parameters only when the return value is true. Early offer is not supported for IPv6 calls in release 8.5(1). Note If an application registers a terminal with registration type as CiscoBaseMediaTerminal.DYNAMIC_MEDIA_REGISTRATION_FOR_GET_PORT_SUPPORT or CiscoBaseMediaTerminal.STATIC_MEDIA_REGISTRATION_FOR_GET_PORT_SUPPORT and the IP addressing mode as IPv6, the registration follows but this feature does not come into effect. The applications do not receive the CiscoMediaOpenIPPortEv. The application must close the ports when it receives media termination events or when a call is disconnected. When IPv6 support is added, the application receives two CiscoMediaOpenIPPortEv, for dual mode devices, one for IPv4 and the other for IPv6 addresses. When the call is answered, application closes the unused port based on MediaIPAddressingType in CiscoMediaOpenLogicalChannelEv. The service parameter, Fail Call Over SIP Trunk if MTP Allocation Fails, decides if the call must go through as a delayed offer or not. If applications do not set the RTP parameters when they receive CiscoMediaOpenIPPortEv for a dynamically registered terminal with get port support, this service parameter decides if the call must go through as a delayed offer or not. Interface Changes See CiscoBaseMediaTerminal, on page 329, CiscoMediaOpenIPPortEv, on page 448, CiscoMediaOpenLogicalChannelEv, on page 449, CiscoJtapiException, on page 416 Message Sequences See SIP Trunk Early Offer, on page 1498 Backward Compatibilty This feature is backward compatible. This feature is applicable only when applications register the CiscoMediaTerminals and CiscoRouteTerminals with registrationType as CiscoTerminal. DYNAMIC_MEDIA_REGISTRATION_GET_PORT or CiscoBaseMediaTerminal. STATIC_MEDIA_REGISTRATION_FOR_GET_PORT_SUPPORT. Cisco Unified JTAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 179 Features Supported by Cisco Unified JTAPI SIP Trunk Early Offer