bottom of the connector) When wiring a TAE plug, a mirror image of the illustration (pins 1 through 3 are on the left side) should be used, if wiring the connector with the flat side up. Observations As the TAE connector does not have gold contacts, the contacts may oxidize, which can cause sizzling and crackling noises in analog voice transmission. Looping the a2 and b2 wires out of the TAE is related to the routing the line through instruments in a house in order that no extension may overhear another. Pin-out See also TDO connector Telephone connectors