US5233648A
Expired / Lapsed
US
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Direct dialing-in method in a pabx
Assignee: Panasonic Holdings Corp
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Filing: 1991-11-25
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Granted: 1993-08-03
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Expires: 2011-11-25
Abstract
Abstract A direct dialing-in method in a PABX is disclosed. In this method, a called party number translation table storing a plurality of pairs of first and last addresses for defining address groups, each constituted of a predetermined number of serial numbers, and specified addresses set for all kinds of terminals, at each group, is prepared. A called party number is extracted from the called party number information element of a SET UP message from a central exchange in ISDN having received a direct dialing-in number. It is checked with the aid of the translation table which of the address groups includes the called party number. The called party number is converted into a relative address in an address group including the called party number. The kind of a terminal on a call side is judged from the bearer capability information element and the high layer compatibility information element of the SET UP message simultaneously with the determination of the relative address. A specified address corresponding to the kind of the terminal is read out from the called party number translation table, and the read-out, and the specified address is added to the relative address, to obtain the extension number of the terminal.
Inventors
- 👤 Yuzi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:48
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/58; H04Q3/62; H04Q3/622; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q3/625; H04Q3/627
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
A direct dialing-in method in a PBX, comprising the steps of: providing a called party number translation table which stores the number of digits of a called party number, a plurality of pairs of a first and a last address for defining address groups, each of which constitutes a predetermined number of serial numbers, and specified addresses set for a plurality of kinds of terminals, at each address group; extracting a called party number as a direct dialing-in number from a called party number information element of a SET UP message from a central exchange in ISDN; checking which of the address groups includes the called party number, with the aid of said called party number translation table; converting said called party number into an address corresponding to said called party number in an address group which includes said called party number; judging a kind of terminal to be called at a called side, from a bearer capability information element and a high layer compatibility information element of the SET UP message; selecting a specified address corresponding to the judged kind of terminal, from said called party number translation table; and adding said specified address to said address in said address group which includes said called party number, to obtain the extension number of a terminal from among the judged kind of terminal.
Claim 2
Dependent Claim
223 words
A direct dialing-in method in a PBX, comprising the steps of: providing a called party number translation table which stores the number of digits of a called party number, a plurality of pairs of a first and a last address for defining address groups, each of which constitutes a predetermined number of serial numbers, and specified addresses set for a plurality of kinds of terminals, at each address group; extracting a called party number as a direct dialing-in number from a called party number information element of a SET UP message from a central exchange in ISDN; checking which of the address groups includes the called party number, with the aid of said called party number translation table; converting said called party number into an address corresponding to said called party number in an address group which includes said called party number; judging a kind of terminal to be called at a called side, from a bearer capability information element and a high layer compatibility information element of the SET UP message; selecting a specified address corresponding to the judged kind of terminal, from said called party number translation table; and adding said specified address to said address in said address group which includes said called party number, to obtain the extension number of a terminal from among the judged kind of terminal.
Claim 3
Dependent Claim
200 words
A direct dialing-in method in a PBX, comprising the steps of: providing a called party number translation table which stores the number of digits of a called party number, a plurality of direct dialing-in numbers with said number of digits, and specified addresses of a plurality of kinds of terminals set for each direct dialing-in number; extracting a called party number as a direct dialing-in number which has a predetermined number of digits, from a called party number information element of a SET UP message from a central exchange in ISDN; comparing said called party number as a direct dialing-in number with the plurality of direct dialing-in numbers on the called party number translation table; judging a kind of a terminal to be called at a called side, from a bearer capability information element and a high layer compatibility information element of the SET UP message, when said called party number agrees with one of the direct dialing-in numbers on said called party number translation table; and selecting a specified address corresponding to the judged kind of terminal from said called party number translation table, to obtain the extension number of a terminal from among the judged kind of terminal.
Claim 4
Dependent Claim
200 words
A direct dialing-in method in a PBX, comprising the steps of: providing a called party number translation table which stores the number of digits of a called party number, a plurality of direct dialing-in numbers with said number of digits, and specified addresses of a plurality of kinds of terminals set for each direct dialing-in number; extracting a called party number as a direct dialing-in number which has a predetermined number of digits, from a called party number information element of a SET UP message from a central exchange in ISDN; comparing said called party number as a direct dialing-in number with the plurality of direct dialing-in numbers on the called party number translation table; judging a kind of a terminal to be called at a called side, from a bearer capability information element and a high layer compatibility information element of the SET UP message, when said called party number agrees with one of the direct dialing-in numbers on said called party number translation table; and selecting a specified address corresponding to the judged kind of terminal from said called party number translation table, to obtain the extension number of a terminal from among the judged kind of terminal.
Claim 5
Dependent Claim
199 words
A direct dialing-in method in a PBX, comprising the steps of: providing a called party number translation table which stores the number of digits of a called party number, a plurality of pairs of first and last addresses for defining an address group which corresponds to each kind of terminal, and a specified address set for one kind of terminal at each pair of first and last addresses; judging a kind of a terminal to be called at a called side from a bearer capability information element and a high layer compatibility information element of a SET UP message from a central exchange in ISDN; extracting a called party number which has a predetermined number of digits, from a called party number information element of the SET UP message from a central exchange in ISDN; converting said called party number into an address corresponding to said called party number in an address group which includes said called party number; and adding said address in said address group which includes said called party number to a specified address corresponding to the judged kind of terminal, to obtain the extension number of a terminal from among the judged kind of terminal.
Claim 6
Dependent Claim
199 words
A direct dialing-in method in a PBX, comprising the steps of: providing a called party number translation table which stores the number of digits of a called party number, a plurality of pairs of first and last addresses for defining an address group which corresponds to each kind of terminal, and a specified address set for one kind of terminal at each pair of first and last addresses; judging a kind of a terminal to be called at a called side from a bearer capability information element and a high layer compatibility information element of a SET UP message from a central exchange in ISDN; extracting a called party number which has a predetermined number of digits, from a called party number information element of the SET UP message from a central exchange in ISDN; converting said called party number into an address corresponding to said called party number in an address group which includes said called party number; and adding said address in said address group which includes said called party number to a specified address corresponding to the judged kind of terminal, to obtain the extension number of a terminal from among the judged kind of terminal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |