Further information for Telecom Behnke 20-9324 - Behnke Cable 1 button 1 LP 1 microphone
Connection cable (6 m) for 1 button, 1 speaker, 1 microphone, RJ45 patch plug to 3x MQS plug (alternative to the junction box 20-9208.
Caution: required when existing key cable 20-9303).