Distinguish among T1, T2, T3, and T4 circuits.
Describe SONET. How does it differ from SDH?
. How do packet-switching services differ from other WAN services?
. Where does packetizing take place?
Distinguish among T1, T2, T3, and T4 circuits.
Describe SONET. How does it differ from SDH?
. How do packet-switching services differ from other WAN services?
. Where does packetizing take place?