Dropped Calls
Dropped
call is the common term for a wireless mobile
phone call that is terminated unexpectedly as a
result of technical reasons.
The most common reason for a dropped call is
when the mobile phone moves out of range of a
wireless network. An active call cannot be
maintained across a different company's network
(as calls cannot be re-routed over the
traditional phone network while in progress),
resulting in the termination of the call once a
signal cannot be maintained between the phone
and the original network. Another common reason
is when a phone is taken into an area where
wireless communication is unavailable,
interrupted, interfered with or jammed. From the
network's perspective, this is the same as the
mobile moving out of the coverage area.
Occasionally calls are dropped upon handoff
between cells within the same provider's
network. This may be due to an imbalance of
traffic between the two cell towers' zones. If
the new tower is at capacity, it cannot accept
the additional traffic of the new call. If the
phone cannot find an alternative cell to move to
that can take over the call, the call is lost.
Calls can also be dropped if a mobile phone at
the other end of the call loses battery power
and stops transmitting abruptly. Sun spots and
solar flares are also blamed for causing
interference leading to dropped calls.
Experiencing too many dropped calls is the one
common customer complaint received by wireless
providers. They have attempted to address the
complaint in various ways, including expansion
of their home network coverage, increased cell
capacity, and offering refunds for individual
dropped calls.
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