Analog Port pin-out
17
SmartNode 4740 Series (48–128 Ports) User Manual
1 • Quick Start
Analog Port pin-out
For models with FXS ports terminated on RJ21 connectors, see the detailed pin-out in Appendix D, section
Models that come with RJ11 ports use a 6-position RJ11 connector. The middle 2 positions (3 and 4) are used
as follows:
Note
Pins not listed are not used.
Pin
Signal
3
Ring (-)
4
Tip (+)