Bad frame interpolation is a critical process used to avoid the voice quality issues associated with packet loss or packet corruption during calls.

Data packets may be lost for two main reasons:

• Sometimes line quality degrades due to moisture or other environmental issues, which makes the line attenuation too high for any signal to survive the noise.
• Sometimes packets may be lost due to a problem with the backbone of the digital network, where packets were supposed to follow a certain route. However, the route may change due to an outage in one of the route nodes.