Header information needed to address each voice packet adds significant overhead and in some cases can lead to doubling of the bandwidth required. No savings - assigns bandwidth irrespective of silence. In pure voice environments careis needed to ensure that overbooking bandwidth does not lead to congestion. Delay Constant bit interleaving leads to low fixed delay from compression algorithm and transmission media. Quality Based on algorithm used.
Higher quality is typical due to lower delay.
Based on algorithm used, but further degradation is possible due to the responsiveness to silence suppression and lost packets due to network congestion. Fragments reduce the overall delay of voice traffic, but adds a lot of overhead due to the large size of IP headers. Network must be properly conditioned to meet VoIP's stringent QoS requirements. IP addressing structure provides flexible call redirection services. When comparing transmission technologies to one another, several other points are also worth noting.