Clear-Com RS-603 (No longer available) - Manual (Page 27)

2 5 R S - 6 0 3 / 6 2 3 / R B E L T P A C K S
Note; On the RS-603R and RS-623R models, the intercom and
loop-through connectors swap positions to conform to RTS
requirements.
Auxiliary Headset Connector Pinouts
Computer Connector Pinouts
PIN FUNCTION
603 623 603R 623R
Tip microphone microphone microphone microphone
Ring earphone earphone earphone earphone
Sleeve common common common common
PIN FUNCTION
603 623 603R 623R
Tip SDO to
computer SDO to
computer SDO to
computer SDO to
computer
Ring SDI from
computer
SDI from
computer SDI from
computer SDI from
computer
Sleeve ground ground ground ground