Multitone signalling on telephone lines.

Cargill, James.2009-03-202009-03-2019881988Source: Masters Abstracts International, Volume: 40-07, page: .9780315467231http://hdl.handle.net/10393/5543http://dx.doi.org/10.20381/ruor-14413Engineering, General.Multitone signalling on telephone lines.Thesis