Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1996-05-21
1998-01-27
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 58, 379 60, 379 45, H04M 1100, H04M 1104
Patent
active
057129002
ABSTRACT:
Whenever a mobile station originates an emergency call connection towards a Public Safety Answering Point (PSAP), a first mobile switching center (MSC) serving the mobile station assigns a first temporary local directory number (TLDN) to the call connection. The assigned TLDN is also utilized as the calling party number (CgPn). Subsequently, whenever the mobile station roams out of the first MSC coverage area, the data correlating the first TLDN with the Mobile Station Integrated Service Digital Network (MSISDN) number associated with the roaming mobile station are maintained by the first MSC if a timer assigned to the first TLDN has not expired. Alternatively, the first MSC may also communicate with the second MSC newly serving the mobile station to request and receive a second TLDN associated with the second MSC. Whenever the PSAP requests a call back connection in response to a disconnection of the original emergency call connection, the first MSC forwards the received call setup signal using the stored MSISDN or second TLDN as the new Called Party Number (CdPn).
REFERENCES:
patent: 4924491 (1990-05-01), Compton et al.
patent: 4979204 (1990-12-01), Oyama
patent: 5142654 (1992-08-01), Sonberg et al.
patent: 5161180 (1992-11-01), Chavous
patent: 5245651 (1993-09-01), Takashima et al.
patent: 5311574 (1994-05-01), Livanos
patent: 5339351 (1994-08-01), Hoskinson et al.
patent: 5347568 (1994-09-01), Moody et al.
patent: 5388145 (1995-02-01), Mulrow et al.
patent: 5414750 (1995-05-01), Bhagat et al.
patent: 5430790 (1995-07-01), Williams
patent: 5438616 (1995-08-01), Peoples
patent: 5440614 (1995-08-01), Sonberg et al.
patent: 5452353 (1995-09-01), Menezes
patent: 5475745 (1995-12-01), Boyle
patent: 5479478 (1995-12-01), Fath
patent: 5479482 (1995-12-01), Grimes
patent: 5481603 (1996-01-01), Gutierrez et al.
patent: 5490203 (1996-02-01), Jain et al.
patent: 5519760 (1996-05-01), Borkowski et al.
patent: 5537594 (1996-07-01), Shannon et al.
patent: 5557664 (1996-09-01), Burns et al.
Alperovich Vladimir
Maupin Alain Guy
Ericsson Inc.
Kuntz Curtis
Tieu Binh K.
LandOfFree
Emergency call back for roaming mobile subscribers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Emergency call back for roaming mobile subscribers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergency call back for roaming mobile subscribers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-348149