Partyline : TW-47 interfacing to Motorola 2-way radios
Found a website that offers Motorolaaccessories, link: http://www.planetheadset.com/motorola-radio-accessories.php Appears that the M4 accessoryconnector/adapter would allow the user to convert to the M1 style connector(3.5 / 2.5 mm pair) which is shown in the TW-47 manual. 
CAN'T FIND YOUR ANSWER? CLICK HERE TO CONTACT SUPPORT
This solution was provided to you by Clear-Com via a question submitted to us by customers like you. If your question wasn’t answered, you need help or you have a recommended solution for our database, please send us an email at support@clearcom.com
The information on this page is owned by Clear-Com and constitutes Clear-Com’s confidential and proprietary information, may be used solely for purposes related to the furtherance of Clear-Com’ business and shall not be disclosed, distributed, copied or disseminated without Clear-Com’s prior written consent. Click Here for Clear-Com's privacy statement.