TELEPHONE - WALL
Self-selecting desk telephones with inductor for dual lines

HA 700 (Old No.s 777, 778 and 779)
Horizontal microphone RE 1004 with telephone cord RS 6010.
Wall mount terminal box with cable (see table).
Three-magnet Generator RH 3256.
Selector switch.
Ringer with 300ohms resistance.

Based on the incoming signal, the phone's bell rings regardless of which number the switch is set to.

When the signal arrives, the switch is turned to the position marked A, after which calls can take place.

If you wish to talk to one of the other devices from one device, you set the switch to the number of the device in question and give a signal with the push button.

These devices can also be used for single lines.

Taken from the L. M. Ericsson Telephones and Signalling Material Catalogue No. 122 (1930) - Swedish Translation

Last revised: March 27, 2024