|
This page displays all 「FI」 in main group H04Q5/00. |
HB:Handbook | ||||
|
CC:Concordance | |||||
|
|
Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange | HB | CC | 5K056 | |
|
|
.with direct connection for all subscribers, i.e. party-line system (H04Q 5/24 takes precedence) | HB | CC | 5K056 | |
|
|
..Signalling by currents in one or other or both line wires or additional wires | HB | CC | 5K056 | |
|
|
..Signalling by amplitude or polarity of dc | HB | CC | 5K056 | |
|
|
..Signalling by continuous ac | HB | CC | 5K056 | |
|
|
...using single frequencies for different subscribers | HB | CC | 5K056 | |
|
|
...using combinations of frequencies | HB | CC | 5K056 | |
|
|
..Signalling by pulses | HB | CC | 5K056 | |
|
|
...by predetermined number of pulses | HB | CC | 5K056 | |
|
|
.with indirect connection, i.e. through subordinate switching centre | HB | CC | 5K056 | |
|
|
..the subordinate centre permitting interconnection of subscribers connected thereto | HB | CC | 5K056 | |
|
|
..the subordinate centre not permitting interconnection of subscribers connected thereto | HB | CC | 5K056 | |
|
|
.for two-party-line systems | HB | CC | 5K056 | |
|
|
..circuit device for two subscribers, low frequency speech and/or signal control signal is used for one, while low frequency speech and/or signal control signal is modulated by high frequency transmission signal | HB | CC | 5K056 | |