It's no secret that when one telephone line to connect two telephone of the device, users are faced with a number of inconveniences. Especially if parallel devices are arranged in different apartments. The main problem is that when you receive a call, it is difficult to determine what the caller call.
This inconvenience can be eliminated if one of two parallel lines to connect a phone with caller ID (caller ID) having a voice overlap call. In another apartment it is necessary to conduct a two-wire line to which to connect dynamic head. By connecting this line in parallel with the staffing dynamic head phone with caller ID, the owners of the vehicles will be able to hear the information about the incoming rooms and pick up the phone when I call one of them.
Of course, if the number on the scoreboard undecided or unknown caller to one of subscribers will have to use the method, known to all owners phones in parallel, i.e. to say: "Call back again, please".
Usually phone with caller ID works in the "auto-pick" tube. If you do not install the mode in which the caller ID skips a few calls before the "auto-pick", another parallel machine, in the best case, will make a call and will subside. The application of the described refinement allows you to immediately determine the number and broadcast voice message and call in a neighboring apartment.
In practice, the connection of additional dynamic head fully proved the feasibility of the proposed ideas. To use parallel the telephone has become much easier and more enjoyable (the author has been applied caller ID with software version "Rus-22").
Author: W. Gavrilenko, Krasnoyarsk