That was a problem I was running up against when at the end of my story explaining how Eisenhower used his European trip to create precedents for himself by getting Hoover included in the London phone directory, and hiding the copies of birth certificates for Taft, the two Roosevelts and Harry Sergei Truman (used to claim French citizenship) at the back of the panel of the Just Judges in Ghent rather than at the back of a painting in the cathedral of Sainte-Mere-Eglise.
Jean Jaures was supposed to contact Eisenhower just before he got shot. Unfortunately, he could only send a telegram.
1927 was in fact a radio connection. The first real calls between London on the one hand and US or Canda on the other were by TAT 1 - September 25, 1956.
http://en.wikipedia.org/wiki/TAT-1You called an operator (even if you were already on automatic) and asked for a line to Canada or the US, or alternatively, Britain. Sometimes you had to wait a long time.
I am pretty sure the earlier radio connection worked the same way, and you had to wait longer.
December 1961 was the start-up of another system, involving Teleglobe, and provided 80 more simultaneous calls. From then on, what we now expect as normal, you just dial the country code and the number and they connect you to the other side of the world, became
possible.
Oh, and I also found there were a grand total of ... 1,000 public telephone cells in Kenya in 1978!
This gives you an idea that what we now take for granted, is really something that started between 1955 and 1965:
http://www.atlantic-cable.com/Cables/Ca ... ex1951.htmHawaii to USA 1957. USA to Britain 1956, France to Algeria 1957. If Kenya was somehow connected to Algeria, you could have called someone in Paris from Nairobi, asked them to pass on a message to someone in London, then on to New York and finally Honolulu.

Did we just double the number of people who are part of the conspiracy?
I remember having to phone Surinam in 1972. Had to go to the post office. Radio line to a Paramaribo office that had just become part of a local network of fewer than 10,000 subscribers. Wow.