Field Telephone bell ringing (incoming call)
Field Telephone manual ringing (Magneto)
Field Telephone receiver lifted
Field Telephone receiver replaced
Office Phone
Post Office Telephone, automatic ringing, bell A (Distant)
Post Office Telephone, automatic ringing, bell A (Near)
Post Office Telephone, automatic ringing, bell B (Distant)
Post Office Telephone, automatic ringing, bell B (Near)
Post Office Telephone, continuous ringing, bell A
Post Office Telephone, continuous ringing, bell B
Post Office Telephone, impatient ringing
Post Office Telephone, recalling operator