✦ LIBER ✦
4499338 Key telephone system signalling and control arrangement: David L Wetzel assigned to Northern Telecom Ltd
- Book ID
- 103913695
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 71 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0736-5853
No coin nor oath required. For personal study only.
✦ Synopsis
VIII
New Patents switch and answers the incoming call. The construction and the dimensions of the coupler are such that there is substantially achieved impedance matching between the telephone cartridge (14) and the line (29a, 29b) in both coupling situations.