Circuit Switched Services
Simple, flexible, and inexpensive
- When not used intensively
Main problems
- Varying quality
- Each connection goes through the regular telephone network on a different circuit,
- Low Data transmission rates
- Up to 56 Kbps for POTS, and up to 1.5 Mbps for ISDN
An alternative
- Use a private dedicated circuit
- Leased from a common carrier for the user’s exclusive use 24 hrs/day, 7 days/week