Connectors with Assessed Quality, for Use in d.c., Low-Frequency Analogue and in Digital High-Speed Data Applications - Part 4: Printed Board Connectors - Section 105: Detail Specification for 9 mm Circular Connector with 3 to 8 Contacts for Use in a Wide Range of Applications Including the Telecommunication and Audio Industry (IEC 1076-4-105 ED 1)