ERICSSON N628

The corded switchboard shown here has no model number or schematic inside its housing, as usually found in Ericsson equipment. It is not exactly the same as model N628, but closely related with 2 external lines and 8 internal connections. I slightly modified the internals to make this local battery (LB) switchboard suitable for connection to my automatic Strowger exchange. The switchboard is on loan from the Houweling Telephone Museum in Rotterdam, the Netherlands.

The apparatus has 1917 scribbled in pencil at the back. This is probably the year that it was either installed or serviced. Other vague marks at the jacks indicate that the switchboard was used in a small company. It was built in Stockholm by L.M.Ericsson & Co.

The switchboard is quite heavy at 25 kilograms, its dimensions (height x width x depth) are 100 x 35 x 26 cm, excluding the weights.