Traditional Call Management in a Wireless Network

Traditional Call Management
in a Wireless Network
The shows a traditional call setup, call maintenance, and call clear-down procedure
in a wireless network. The procedure is similar to a wireline network, except the
SS7 signaling has to manage interruptions (dropped calls due to lack of coverage or
handover problems) introduced by the radio physical layer. Using SS7 signaling, a call
is set up, maintained (typically for a couple of minutes or longer), then cleared down.
For the duration of the call, the billable event has constant amplitude value. 344