GB1489743A - Telecommunication system networks - Google Patents
Telecommunication system networksInfo
- Publication number
- GB1489743A GB1489743A GB1535877A GB1535877A GB1489743A GB 1489743 A GB1489743 A GB 1489743A GB 1535877 A GB1535877 A GB 1535877A GB 1535877 A GB1535877 A GB 1535877A GB 1489743 A GB1489743 A GB 1489743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- telecommunication system
- system networks
- speech
- traversal
- heading
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
1489743 Testing speech transmission paths POST OFFICE 17 Oct 1974 [17 July 1973] 15358/77 Divided out of 1489741 Heading H4K The description is substantially the same as that of parent Specification 1,489,741, but the claims are concerned with the fact that the test signal is in digital form and comprises an encoded test tone within the speech frequency band, thereby facilitating its traversal of any analog speech path in the system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1535877A GB1489743A (en) | 1974-10-17 | 1974-10-17 | Telecommunication system networks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1535877A GB1489743A (en) | 1974-10-17 | 1974-10-17 | Telecommunication system networks |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1489743A true GB1489743A (en) | 1977-10-26 |
Family
ID=10057767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1535877A Expired GB1489743A (en) | 1974-10-17 | 1974-10-17 | Telecommunication system networks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1489743A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2399775A1 (en) * | 1977-08-05 | 1979-03-02 | Int Standard Electric Corp | CONTINUITY TEST DEVICE FOR TELECOMMUNICATIONS SYSTEM |
EP0003448A1 (en) * | 1978-01-20 | 1979-08-08 | Thomson-Csf | Space-time division connection network |
-
1974
- 1974-10-17 GB GB1535877A patent/GB1489743A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2399775A1 (en) * | 1977-08-05 | 1979-03-02 | Int Standard Electric Corp | CONTINUITY TEST DEVICE FOR TELECOMMUNICATIONS SYSTEM |
EP0003448A1 (en) * | 1978-01-20 | 1979-08-08 | Thomson-Csf | Space-time division connection network |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |