NEC Electra Elite IPK II System User Manual page 908

Document Revision 4C
With Version 2000 or higher, when a Ring Group call rings a single line station, the BLF

indication shows busy.
Stutter Dial Tone is supported to Single Line Telephones for Voice Mail Message Waiting.

Default Setting
Single line telephones function as soon as they are installed and properly programmed.
System Availability
Terminals
DTR-1-1
DTH-1HM-1
DTH-1-1
DTP-1-2
DTP-1HM-2
DTR-1R-2
Required Component(s)
SLI( )-U( ) ETU
2 - 884 Single Line Telephones, Analog 500/2500 Sets
Electra Elite IPK II