Transit exchange equipment, Telephone exchange, 3rd floor, Eldon House, Charter Row

Telephone exchange, 3rd floor, Eldon House, Charter Row

Junction tandem, Telephone exchange, 3rd floor, Eldon House, Charter Row

Telephone exchange, 3rd floor, Eldon House, Charter Row

Hallam end, Telephone exchange, 3rd floor, Eldon House, Charter Row

The Auto, Telephone exchange, 2nd floor, Eldon House, Charter Row

Trunk testing, Telephone exchange, 2nd floor, Eldon House, Charter Row

Trunk auto equipment room, Telephone exchange, 2nd floor, Eldon House, Charter Row

Hallam equipment, Telephone exchange, 3rd floor, Eldon House, Charter Row

The Auto, Telephone exchange, 2nd floor, Eldon House, Charter Row