Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-07-19
2005-07-19
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S433000, C455S432100, C455S435100
Reexamination Certificate
active
06920326
ABSTRACT:
The present invention provides a method and apparatus for restricting call terminations for a roaming mobile unit. A serving MSC, which is an MSC providing call processing a mobile unit that is not the home MSC of the mobile unit, sends a registration notification request to the home location register (HLR). The HLR retrieves the termination access code parameter from the HLR and sends it to the serving MSC. The termination access code parameter includes a value that indicates if the mobile unit is allowed to roamer port calls. The parameter is stored at a VLR associated with the serving MSC. When a call request comes in to the serving MSC and requests a roamer port call with the mobile unit, the serving MSC checks the value of the termination restriction code to determine if it should terminate, or complete, the call.
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Agarwal Anjana
Jacobson Terry
Rudolph Michael Joseph
Lucent Technologies - Inc.
MacIntyre John B.
Rampuria Sharad
Santema Steven R.
Trost William
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