These are two main elements to R2 signaling:
- Line signaling: supervisory signals
- Interregister signaling: call setup control signals
For an introduction to E1 R2 signaling, refer to E1 R2 Signaling Theory.
This information can be found in the E1 R2 Signaling Theory document:
- Three types of E1 R2 line signaling are R2-Digital, R2-Analog and R2-Pulse.
For more information, refer to the Line Signaling (Supervisory Signals) section.
- Three types of E1 R2 interregister signaling are R2-Compelled, R2-Non-Compelled and R2-Semi-Compelled.
For more information, refer to the Interregister Signaling (Call Setup Control Signals) section.
For more information on configuring E1 R2 signaling, refer to these documents: