Problems:	•   IP does not guarantee any bandwidths  •   QoS is not part of H.323
Consequences	•   Time problems due to large e-mail attachments and web surfing  •   Network congestion due to multiple requests for the same web page  •   Reduced voice quality due to    -   Delay (decline in voice quality due to delay)    -   Variable delays (decline in voice quality due to jitter)    -   Packet loss (decline in voice quality due to packet loss)
Goals:	•   QoS is required in the WAN/LAN for    -   Optimum voice quality for every connection    -   Fewer interruptions