Appeal No. 1998-1181
Application No. 08/442,883
identification codes (SIDs) corresponding to cellular carriers
(specification, page 3, lines 26-29). The accessing is
accomplished by programming into a cellular phone a list of
preferred SIDs corresponding to carriers through which service
will be preferred (specification, page 3, lines 28-31). The
standard A/B selection function is automatically replaced
while any SID is on the preferred list, with “Home Only”, “SID
Only”, and “Roam Saver” modes (specification, page 3, lines
32-35).
In the Roam Saver mode the cellular telephone will prefer
service through a carrier broadcasting a SID matching a SID on
the preferred list (Fig. 3, item numbered 118, and Fig. 4,
item numbered 174).
The cellular telephone is also provided with multiple
number assignment modules (NAMs)to support subscriptions to
services of multiple carriers (specification, page 5, line 31
through page 6, line 2; page 11, line 13 through page 12, line
8). The user of the cellular telephone then has the option of
manually selecting the NAM to be used or enabling an auto-NAM
function to automatically select and use the NAM of any home
carrier detected by the cellular telephone.
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