NEC Electra Elite IPK II Features And Specifications Manual page 824

Document Revision 1
Programming
14-02-17 Synchronous Ringing Enable/Disable Per Trunk
Enable or disable per trunk.
0 = Disable
1 = Enable (default)
22-03-01 Trunk Ring Tone Setup
Define the ring tone for each trunk 0~8 (default: 0).
Operation
None
2 - 802
Electra Elite IPK II
Synchronous Ringing