ES2013429A6 - Digital network telephone adapter - Google Patents
Digital network telephone adapterInfo
- Publication number
- ES2013429A6 ES2013429A6 ES8901252A ES8901252A ES2013429A6 ES 2013429 A6 ES2013429 A6 ES 2013429A6 ES 8901252 A ES8901252 A ES 8901252A ES 8901252 A ES8901252 A ES 8901252A ES 2013429 A6 ES2013429 A6 ES 2013429A6
- Authority
- ES
- Spain
- Prior art keywords
- digital network
- circuit
- adapter
- network telephone
- implements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Interface Circuits In Exchanges (AREA)
Abstract
The digital network telephone adapter is based on the use of a microprocessor which implements all the levels of the basic access interface of the user, together with control of the peripheral elements of the adapter, having a module of circuits which comprises a specific circuit for the basic interface of the user which implements the physical level of the connection to the digital network and a circuit which carries out functions of hybridising and feeding the direct current loop. Equally the adapter comprises an encoding-decoding circuit which transforms the analogue signal of the law digital line A and vice versa having a detector circuit of multifrequency tones, there being a keyboard, a display, a non-volatile memory specific to the equipment with the object of effecting the operation of the whole assembly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8901252A ES2013429A6 (en) | 1989-04-11 | 1989-04-11 | Digital network telephone adapter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8901252A ES2013429A6 (en) | 1989-04-11 | 1989-04-11 | Digital network telephone adapter |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2013429A6 true ES2013429A6 (en) | 1990-05-01 |
Family
ID=8261399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8901252A Expired - Lifetime ES2013429A6 (en) | 1989-04-11 | 1989-04-11 | Digital network telephone adapter |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2013429A6 (en) |
-
1989
- 1989-04-11 ES ES8901252A patent/ES2013429A6/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20020401 |