Tone Signaling Adapter (TA-955/PT) enables interfacing the TA-312A/PT with automatic switchboards, such as the SB-3614 Tactical Switching Center.
The Tone Signaling Adapter readily attaches to the TA-312A/PT no mods needed.
Item Info:
TA-955/PT
Adaptor, Tone Signalling
5805-01-153-9158
MFG PN 2140
NOS – Never issued!