In the US, there are a number of sources for breakout boards for field termination. These are useful when connecting fourwire audio to CCUs, or temporarily connecting V-Panels to relays, logic inputs, or audio inputs and outputs.
Here are some that we've seen in use:
L-Com: http://www.l-com.com/d-sub-db25-female-connector-for-field-termination-with-screwless-terminal-blockGravitech: http://store.gravitech.us/breakoutboards.html
It is usually good practice to solder or crimp for permanent installation, as screw terminals may loosen over time.