
ROAMING AND SYSTEM OPERATION
There are generally two types of cellular systems serving any met-
ropolitan area. One of these will most likely be operated by the
telephone company that provides telephone service to your com-
munity, generally referred to as a wireline carrier. The other
Cellular Service Provider is a radio common carrier, referred to as
a non-wireline carrier.
Your Cellular Service Operator will provide information concern-
ing specific features, procedures, and coverage in your
particular area.
S e r v i c e A r e a
The area within which the telephone operates is defined by your Cellular
Service Provider. Since this is a radio system, no exact boundaries (as on
a map) can be drawn. The red
NS
(No Service) lights if you are beyond
range of a service area. There may be locations within your area, such
as tunnels and underground parking facilities where the unit may act as
if it were beyond range.
W e a k S i g n a l A l e r t
If you are called while in a location the system determines is inadequate
for high quality service, you may hear a series of beeps to inform you of
the call attempt. The caller will receive the recorded
“
Not in Service
”
message,
CALL
appears in the display, and the green on indicator flashes
quickly. If this occurs, you must press
Ç
before the unit will operate.
Most systems do not impose air-time charges for such call attempts. This
feature is usually turned off.
NOTE:
This indicator is controlled through the initial programming of
your phone. Refer to the Programming Guide for more details.
R o a m i n g
The term
“
Roaming
”
applies to the use of cellular telephones within sys-
tems other than those designated as their
“
Home
”
system.
RM
(Roam)
lights whenever the unit comes within range of a visited system. As your
phone begins to roam, it seeks service according to the conditions you
have selected.
Slow flashing of
RM
(Roam) signals that your phone unit is accessing a
home type system, while rapid flashing indicated the unit is attempting
connection through a non-home type system.
47
ROAMING AND SYSTEM OPERA
TION
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