Piggy-back number and routing isolation for cellular telephone s

Details Piggy-back number and routing isolation for cellular telephone s Piggy-back number and routing isolation for cellular telephone s

1991-06-17

1993-06-01

Kuntz, Curtis

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379201, 379211, 379355, H04M 1100

Patent

active

052167038

ABSTRACT:
A piggy-back number and routing isolation method for cellular telephone switches. A cellular customer dials a *800xxxx number, wherein xxxx represents some combination of symbols of arbitrary length identifying a specific Third Party Advertiser (TPA). The switch uses the leading *800 portion of the dialed *800xxxx number as an access code to direct the call to a special trunk. The switch strips the leading *800 portion from the *800xxxx number and inserts in its place a dialing prefix before making a call through the special trunk. The number dialed by the switch out through the special trunk is the mobile phone number assigned to the TPA as a cellular customer. The special trunk "piggy-backs" the number translations and routing determinations because it is comprised of two ports of the single switch connected together in a "loop-back" manner, so that calls routed out the first port are received immediately by the same switch at the second port. When the switch receives the call coming in from the special trunk, it uses a call forwarding feature associated with the TPA's mobile phone number to route the call directly to the TPA's land-based phone number. Two billing records are thus created out of one call: the cellular customer dialing the *800xxxx number; and the TPA's mobile phone number dialing the TPA's land-based phone number.

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patent: 4268722 (1981-05-01), Little et al.
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patent: 4763191 (1988-08-01), Gordon et al.
patent: 4837800 (1989-06-01), Freeburg et al.
John L. Fike and George E. Friend, Understanding Telephone Electronics 1983, pp. 10-1 to 10-16.
Motorola, Inc., Dyna T-A-C, Mobile and Portable Radio Telephone System 1982, pp. 7-1, 7-9 and 7-55.

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