An identified reason for failure while configuring/modifying ATM Trunking parameters: localIWFAlreadyConfigured(1) : Local IWF has already been configured, the parameters can not be changed or apply again. localIWFAtmAddressError(2): the ATM Address for Local IWF is not valid or this address has been used by someone else. localIWFIdOutOfRange(3): the Identification of Local IWF is out of range. maxNumberRmtIWFOutOfRange(4): the maximum number of Remote IWF is out of range. rmtIWFAlreadyConfigured(5): this remote IWF has already been configured( with index atmTrunkingRmtIWFIdentifier). rmtIWFIdOutOfRange: the identifier for the remote IWF is out of range. rmtIWFAtmAddressError: the ATM Address for remote IWF is not valid or this address has been used by someone else. vccIdError: the VCC ID for the SigVcc or BrVcc is 0, or this VCC ID is out of range or it has been used by someone else. vccPvcParameterNotAcceptable: the parameters of PVC side, including slot, port, channel, vpi, vci, are not acceptable. vccTrafficParameterNotValid: the VCC traffic parameters are not acceptable, including FwPcr01, BwPcr01, FwScr01, BwScr01, FWMbs01, BwMbs01, BrVccServiceType, BrVccSarType. vccViVuniNotValid: the configuration of Egress Vi/VUNI is not acceptable. vccTrunkParameterNotValid: the parameters for the Trunk is not supported, including BrVccMaxAal2ChanId, BrVccCircuitModeDataSupp, BrVccFrameModeSupp, BrVccFaxModeSupp, CASPktXportSupp, BrVccDTMFPktXportSupp, BrVccMFR1PktXportSupp, BrVccMFR2PktXportSupp, BrVccPCMEncoding, BrVccMaxFrameLength, BrVccIdleChannSuprSupp, BrVccSilenceDetSupp, BrVccCompressionSpec,AudioProfileId, SigVccSignaling. vccTrunkFeatureParameterNotValid: PSAX proprietary feature parameters not supported including SigVccInactiveTimer, SigVccRetryTimer, SigVccRetryLimit, BrVccInactiveTimer, BrVccRetryTimer, BrVccRetryLimit, BrVccGr303Supp, BrVccOamStatus. localIwfNotConfigured(14) : Local IWF not Configured localIwfIdNotMatch(15): specified Local IWF not match localIwfStatus(16): this operation is not supported because of the status of Local IWF rmtIwfNotConfigured(17): Remote IWF Not Configured rmtIwfModeNotCompatible(18): the Mode of Remote IWF is not compatiable rmtIwfStatus(19): this operation is not support because of the Status of Remote IWF vccAlreadyConfigured(20): This VCC has been configured vccPvcCacReject(21): PVC Configuration rejected by Cac Reservation Function requiredFieldMissing(22): mandatory fields missing outOfResource(23): Atm Trunking Task or System out of resource for this configuration rowStatusError(24):Row Status Error with the SNMP command generalErrorUnspecified(25): all other unspecified failure cause.