It was an air- or vehicular-transportable manual central office which provided switching for 119 local battery telephones or trunk used at division and corps levels in an area communications system. The AN/MTC–3 was replaced by the AN~TTC-23.
S-175/MTC-3 (Modified S-141/G)
Generator Set PU-294/G, Trailer (M-104) Mounted
Distribution Box J-1077/U
2 Manual Telephone Switchboard SB-86/P
2 Switchboard Signal Assembly TA-207/P
2 Telephone Set TA-312/PT
- TM 11-5805–202–15 and TM 11–5805–202–ESC