NEC Univerge SV8100 Features And Specifications Manual page 1608

Issue 12.0
4. Enter the extension number to be considered the slave telephone (the telephone that rings when
the master extension rings).
A confirmation tone is heard (if Speaker was used).
5. Press Speaker to hang up (if the key is lit).
While the feature is active, if either the master or slave telephone is on a call, no calls can be
placed or answered at the other extension until the busy telephone has hung up. Multiline terminals
indicate TANDEM IN USE in the display and single line telephone users hear a busy signal when
the handset is lifted.
To cancel Tandem Ringing:
1. Press the Tandem Ringing key (Program 15-07 or SC 751: 80).
2. Dial 0 to cancel the feature.
2 - 1578
UNIVERGE SV8100
Tandem Ringing