This wiring diagram fits my telephone marked: 6/DLG 17611/ 52/810 A5 7127
The circuit is typical bridge compensation as European telephones like Siemens W48... where some of the curent pass the transmitter via the anti sidetone loop.
dsk
Pictures:
An interesting link.. in sweedish: http://http://www.stsf.org/arkiv/ER/ER_1964_DIALOG_en_ny_telefonapparat.pdf (http://http://www.stsf.org/arkiv/ER/ER_1964_DIALOG_en_ny_telefonapparat.pdf)
anothe in English from TCI: https://www.telephonecollectors.info/index.php/browse/document-repository/catalogs-manuals/lm-ericsson/13413-ericsson-dialog-technical-description-model-6-dlg-1968/file (https://www.telephonecollectors.info/index.php/browse/document-repository/catalogs-manuals/lm-ericsson/13413-ericsson-dialog-technical-description-model-6-dlg-1968/file)
Another related thread: http://www.classicrotaryphones.com/forum/index.php?topic=25685.msg251914#msg251914