Hi Folks, I have a HMN-1014A DTMF mic. I think it was for an HT version of equipment. I would like to use these DTMF's on my GM300 Radius gear. This DTMF mic has a 5 wire connection. The Radius is 4 wires and an RJ-14 connector. I don't know what the 5 wire assignments are. Any advice is appreciated. Larry K2JIA www.antiquetelephone.com