Specifications

Figure 3A: Simplified Schematic
P81417 L
Sheet 4 of 6
WIRING: (See Figure 3A.)
- Make sure the 24VDC Power Supply is disconnected from 115VAC Power Source..
- Connect 24VDC power supply "+" and "-" to TB1 terminals 1 and 2 respectively.
- Connect Tip and Ring from telephone system, or Wheelock Zone Control Modules "T out" and "R out"
to TBM-101's terminals.
- If connected directly to telephone system, disable TB Inhibit by shorting TB1 terminals 5 and 6 with a
jumper wire.
- For connection to an unused CO port requiring talk battery, install as shown in Figure 3.