US3636267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for the reciprocal acceptance of calls
Assignee: Siemens AG
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Filing: 1969-06-09
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Granted: 1972-01-18
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Expires: 1989-06-09
Abstract
Abstract A centrally controlled telephone exchange installation having a plurality of subscriber stations authorized to accept calls for each other wherein a call from a calling repeater for one subscriber station is indicated to the other subscriber stations with an arrangement for the acceptance of a call for a subscriber station by another authorized subscriber station. A centrally arranged storage means is provided and assigned to all subscriber stations authorized for the reciprocal acceptance of calls to mark a call for one of the subscriber stations, and store the address of the calling repeater. An authorization storage, the authorization for the reciprocal acceptance of calls for the subscriber stations being marked therein to determine the address of the centrally arranged storage means corresponding to the assignment of the said one of the subscriber stations to the centrally arranged storage means, is also included.
Inventors
- 👤 Robert Fritz
- 👤 Horst Beckh
- 👤 Norbert Torggler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:18
CPC Classifications
H; H04; H04Q; H04Q3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
211 words
In a centrally controlled telephone exchange installation having a central memory and having a plurality of subscriber stations including a number of subscriber stations authorized to accept calls for each other wherein a call from a calling repeater for one of said authorized subscriber stations is indicated to the others of said authorized subscriber stations, a central memory arrangement for the acceptance of a call to one of said authorized subscriber stations by another authorized subscriber station comprising: common storage means in said central memory connectable to each of said authorized subscribers for registering information as to the existence of a call to one of said number of authorized subscribers and for registering the address of the calling repeater, said call information and said address causing said authorized subscriber to be connected to said calling repeater, authorization storage means in said central memory containing a storage location for each said subscriber, the storage location for each said authorized subscriber containing an authorization code permitting connection of said authorized subscriber to said common storage means and connection of call information to one of said authorized subscribers to said common memory and address information for access to said common storage means by said authorized subscriber and by call signals to said authorized subscriber.
Claim 2
Dependent Claim
211 words
In a centrally controlled telephone exchange installation having a central memory and having a plurality of subscriber stations including a number of subscriber stations authorized to accept calls for each other wherein a call from a calling repeater for one of said authorized subscriber stations is indicated to the others of said authorized subscriber stations, a central memory arrangement for the acceptance of a call to one of said authorized subscriber stations by another authorized subscriber station comprising: common storage means in said central memory connectable to each of said authorized subscribers for registering information as to the existence of a call to one of said number of authorized subscribers and for registering the address of the calling repeater, said call information and said address causing said authorized subscriber to be connected to said calling repeater, authorization storage means in said central memory containing a storage location for each said subscriber, the storage location for each said authorized subscriber containing an authorization code permitting connection of said authorized subscriber to said common storage means and connection of call information to one of said authorized subscribers to said common memory and address information for access to said common storage means by said authorized subscriber and by call signals to said authorized subscriber.
Claim 3
Dependent Claim
88 words
The exchange installation defined in claim 1, further comprising: first timing means in said central memory actuated in response to a call to one of said authorized subscribers to measure a first predetermined time period and for enabling only the one of said authorized subscribers called to be connected to said calling repeater during said first predetermined time period and means for enabling said common storage means to register said call information to one of said authorized subscribers after the elapse of said first predetermined period of time.
Claim 4
Dependent Claim
70 words
The exchange installation defined in claim 2 further comprising: second timing means for measuring a second predetermined period of time actuated responsive to a call signalled to one of said authorized subscribers and a determination that call information already exists in said common storage means for enabling the registration of information regarding said call signal in said common storage means after the elapse of said second predetermined period of time.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |