Systems and methods for adjusting carrier quality metrics for intrinsic impariments

A system for identifying a telephony carrier that is providing an unacceptable level of call quality when terminating calls to a group of telephone numbers, comprising:

• means for determining a quality of telephone calls that are placed to the group of telephone numbers via a first telephony carrier for a first period of time;
• means for determining a quality of telephone calls that are placed to the group of telephone numbers via a second telephony carrier for a second period of time;
• means for determining a threshold level of acceptable quality for calls placed to the group of telephone numbers based on the determined quality of the telephone calls placed via the first and second telephony carriers;
• and
• means for identifying a telephony carrier as providing an unacceptable level of quality if a quality of calls placed to the group of telephone numbers by that carrier falls below the determined threshold level.

A system for identifying a telephony carrier that is providing an unacceptable level of call quality when terminating calls to a group of telephone numbers, comprising:

• a call quality measuring unit that is configured to determine a quality of telephone calls that are placed to the group of telephone numbers via a first telephony carrier for a first period of time and a quality of telephone calls that are placed to the group of telephone numbers via a second telephony carrier for a second period of time;
• a threshold quality setting unit that is configured to determine a threshold level of acceptable quality for calls placed to the group of telephone numbers based on the determined quality of the telephone calls placed via the first and second telephony carriers;
• and
• a quality alert unit that is configured to identify a telephony carrier as providing an unacceptable level of quality if a quality of calls placed to the group of telephone numbers by that carrier falls below the determined threshold level.