Orange County Locksmith Home About us Emergency services Residential Commercial Free estimate Contact us Emergency Services Locksmith Services Auto / Car Locksmith Residential Locks Commercial Locks Alarm Systems CCTV Access Control Intercom Systems Phone Systems Search: Phone Systems 909A Universal Coupler Back To: Phone Systems Products This coupler is GRAY, and it has a amber LED on the front. Applications for this is music on hold, loudspeaker paging, auxiliary trunk paging.   Home About us Emergency services Residential Commercial Free estimate Contact us   Locksmith San Jose locksmith| Oakland locksmith| Los Angeles locksmith San Francisco locksmith| San Diego locksmith| Locksmith Orange County