GB1301675A - - Google Patents
Info
- Publication number
- GB1301675A GB1301675A GB1301675DA GB1301675A GB 1301675 A GB1301675 A GB 1301675A GB 1301675D A GB1301675D A GB 1301675DA GB 1301675 A GB1301675 A GB 1301675A
- Authority
- GB
- United Kingdom
- Prior art keywords
- channel
- attenuator
- oct
- whilst
- filter
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5274469 | 1969-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1301675A true GB1301675A (de) | 1973-01-04 |
Family
ID=10465119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1301675D Expired GB1301675A (de) | 1969-10-28 | 1969-10-28 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1301675A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246055A (en) * | 1990-04-06 | 1992-01-15 | Bsb Electronics Limited | Duplex audio communication system |
-
1969
- 1969-10-28 GB GB1301675D patent/GB1301675A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246055A (en) * | 1990-04-06 | 1992-01-15 | Bsb Electronics Limited | Duplex audio communication system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |