Specifications

IPmux-1/1E Installation and Operation Manual Chapter 2 Installation
Installation and Setup 2-7
Table 2-6. E&M Interface Pin Assignment
Pin Designation Function
1 SB Signaling battery
2 M M lead input
3 R1-0UT 4-wire voice output
2-wire voice input/output
4 R-IN 4-wire voice input
5 T-IN 4-wire voice input
6 T1-OUT 4-wire voice output
2-wire voice input/output
7 SC Function depends on signalling mode:
• RS-464 Type I, III: Direct connection to signal ground
• RS-464 Type V, SSDCS: Connection to signal ground
through 1.1 kΩ resistor
• RS-464 Type II: SG lead
8 E E lead output
Table 2-7. External Clock Port Pin Assignment
Pin Signal Name Function
1 RRING Rx
2 RTIP Rx
3 GND Usually not connected
4 TRING Tx
5 TTIP Tx
6 GND Usually not connected
7 – Not connected
8 – Not connected
Connecting the Power
To connect power to IPmux-1/1E, refer to the appropriate section below,
depending on your version of the unit (AC or DC).
Grounding
Interrupting the protective grounding conductor (inside or outside the instrument)
or disconnecting the protective earth terminal can make this instrument
dangerous. Intentional interruption is prohibited.
Before switching ON this instrument and before connecting any other cable,
the protective earth terminals of this instrument must be connected to the
protective ground conductor of the power cord.
Warning