| Name | Data Type | Default Value | Qualifiers | 
| Name | Data Type | Value | 
| BlockErrors | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of block errors seen by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| BlocksReceived | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of blocks received by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| BlocksResent | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of blocks resent by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| BlocksSent | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of blocks sent by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| CallLength | datetime |  | 
| Description | string | Length of the last or current call. A call in-progress is indicated by the CallStatus property. The 'interval' format of the datetime data type should be used for the property value. | 
| CallSpeed | uint32 |  | 
| Description | string | The rate at which the receiver and transmitter are or were last cooperating, on a call, before disconnection. | 
| PUnit | string | bit / second | 
| Units | string | Bits per Second | 
| CallStatus | uint16 |  | 
| Description | string | Status of the Modem. For example, information regarding modem negotiation or whether the modem is connected (values 8 and 9, respectively) can be conveyed in this property. | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | 
| Values | string | Unknown, Other, Offline, On Hook, Dialing, Waiting for Answer, Ringing, Modem Detected, Negotiating, Online, Error | 
| CharsLost | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of characters lost by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| CharsReceived | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of characters received by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| CharsSent | uint32 |  | 
| Counter | boolean | true | 
| Description | string | Total number of characters sent by the Device on the last or current call. A call in-progress is indicated by the CallStatus property. | 
| CompressionInfo | uint16 |  | 
| Description | string | Describes the current data compression characteristics of the Modem. | 
| ModelCorrespondence | string | CIM_CallBasedModem.CompressionSupported, CIM_CallBasedModem.OtherCompressionInfoDescription | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 | 
| Values | string | Unknown, Other, No Compression, MNP 5, V.42bis, MNP 3, MNP 4, V.58, PEP, HST | 
| ErrorControlInfo | uint16 |  | 
| Description | string | Describes the current error correction characteristics of the Modem. | 
| ModelCorrespondence | string | CIM_CallBasedModem.ErrorControlSupported, CIM_CallBasedModem.OtherErrorControlInfoDescription | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 | 
| Values | string | Unknown, Other, No Error Correction, MNP 4, LAPM, V.58, ECP Enhanced Cellular Protocol, ETC Enhanced Throughput Cellular, MNP 1, MNP 2, MNP 3, MNP10, PEP, HST | 
| FallbackEnabled | boolean |  | 
| Description | string | Indicates whether online fallback is enabled so that it can be negotiated by the Modem. | 
| ModulationScheme | uint16 |  | 
| Description | string | Describes the current modulation scheme of the Modem. | 
| ModelCorrespondence | string | CIM_CallBasedModem.ModulationSupported, CIM_CallBasedModem.OtherSchemeDescription | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 | 
| Values | string | Unknown, Other, Not Supported, Bell 103, Bell 212A, V.22bis, V.32, V.32bis, V.terbo, V.FC, V.34, V.34bis, V.17 (G3 Fax Call), V.21, V.22, V.23 Constant Carrier (1200/75), V.23 Switched Carrier (Half Duplex), V.26bis, V.26ter, V.27ter (G3 Fax Call), V.29 HD (G3 Fax Call), V.34 HD (G3 Fax Call), V.90 Issue 1 (Asymmetric), V.90 Issue 2 (Symmetric), V.58, X2, K56FLEX, V.Fast, PEP, HST | 
| NumberDialed | string |  | 
| Description | string | Last or current number dialed to which the statistics apply, or NULL if the call was incoming. | 
| OtherCompressionDescription | string |  | 
| Description | string | Description of the compression type when "Other " (value=1) is defined in the CompressionSupported array. If there are multiple "Other" types, then combine their descriptions into a single string. | 
| ModelCorrespondence | string | CIM_CallBasedModem.CompressionSupported | 
| OtherCompressionInfoDescription | string |  | 
| Description | string | Description of the current compression type when "Other" (value=1) is specified in the CompressionInfo property. | 
| ModelCorrespondence | string | CIM_CallBasedModem.CompressionInfo | 
| OtherErrorControlDescription | string |  | 
| Description | string | Description of the error control type when "Other" (value= 1) is specified in the ErrorControlSupported property. If there are multiple "Other" types, then combine their descriptions into a single string. | 
| ModelCorrespondence | string | CIM_CallBasedModem.ErrorControlSupported | 
| OtherErrorControlInfoDescription | string |  | 
| Description | string | Description of the error control when "Other" (value=1) is defined as the value of the ErrorControlInfo property. | 
| ModelCorrespondence | string | CIM_CallBasedModem.ErrorControlInfo | 
| OtherModulationDescription | string |  | 
| Description | string | Description of the current modulation type when "Other" (value=1) is specified in the ModulationSupported property. If there are multiple "Other" types, then combine their descriptions into a single string. | 
| ModelCorrespondence | string | CIM_CallBasedModem.ModulationSupported | 
| OtherSchemeDescription | string |  | 
| Description | string | Description of the current modulation type when "Other" (value=1) is specified in the ModulationScheme property. | 
| ModelCorrespondence | string | CIM_CallBasedModem.ModulationScheme | 
| TimeOfLastReset | datetime |  | 
| Description | string | Time of the last reset of the Modem. | 
| CompressionSupported | uint16[] |  | 
| Description | string | An array that enumerates all the compression protocols that are supported by the Modem. | 
| ModelCorrespondence | string | CIM_CallBasedModem.OtherCompressionDescription | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 | 
| Values | string | Unknown, Other, No Compression, MNP 5, V.42bis, MNP 3, MNP 4, V.58, PEP, HST | 
| ErrorControlSupported | uint16[] |  | 
| Description | string | An array that enumerates the error control protocols that are supported by the Modem. The beginning entries in the Values qualifier array are mapped from the CIM_POTSModem ErrorControlInfo property. | 
| ModelCorrespondence | string | CIM_CallBasedModem.OtherErrorControlDescription | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 | 
| Values | string | Unknown, Other, No Error Correction, MNP 4, LAPM, V.58, ECP Enhanced Cellular Protocol, ETC Enhanced Throughput Cellular, MNP 1, MNP 2, MNP 3, MNP10, PEP, HST | 
| ModulationSupported | uint16[] |  | 
| Description | string | An array that enumerates all the modulation protocols that are supported by the Modem. The beginning entries in the Values qualifier array are mapped from the CIM_POTSModem ModulationScheme property. | 
| ModelCorrespondence | string | CIM_CallBasedModem.OtherModulationDescription | 
| ValueMap | string | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 | 
| Values | string | Unknown, Other, Not Supported, Bell 103, Bell 212A, V.22bis, V.32, V.32bis, V.terbo, V.FC, V.34, V.34bis, V.17 (G3 Fax Call), V.21, V.22, V.23 Constant Carrier (1200/75), V.23 Switched Carrier (Half Duplex), V.26bis, V.26ter, V.27ter (G3 Fax Call), V.29 HD (G3 Fax Call), V.34 HD (G3 Fax Call), V.90 Issue 1 (Asymmetric), V.90 Issue 2 (Symmetric), V.58, X2, K56FLEX, V.Fast, PEP, HST |