Tandem Ringing
Aspire Software Manual Features ◆543
Direct Station Selection (DSS) Console
When Tandem Ringing is active and one of the extensions is busy, a DSS console will indicate
both extensions as busy.
Do Not Disturb
A slave phone will ignore the settings for DND and follow the master phone’s settings
instead.
Intercom
Voice Call is not supported on a keyset with Tandem Ringing.
ISDN / Networking
Tandem Ringing does not support S-Bus or Networking.
HoldCalls placed on Hold while Tandem Ringing is active will immediately recall if the handset is
placed on hook.
Message Waiting
When an extension leaves a Message Waiting for a Tandem Ringing extension, both exten-
sions will indicate the message until one of the extensions return the call.
Ring Groups
A slave phone will ignore the settings for Ring Groups and follow the master phone’s settings
instead.
Tie Lines
E&M trunks are not supported.
Operation
To set up Tandem Ringing:
1. Press the CALL key on the extension to be considered the master phone.
2. Press the Tandem Ringing key (PGM 15-07 or SC 851: 80).
3. Dial “1” to set the feature.
4. Enter the extension number to be considered the slave phone (the phone that will ring when
the master extension rings).
A confirmation tone will be heard.
5. Press SPK to hang up.
While the feature is active, if either the master or slave phone has placed a call, the other
phone will only be able to answer incoming calls - no calls can be placed until the other exten-
sion has hung up. For keysets, this will be indicated by “TANDEM OTHER USED” displayed
on the phone - single line telephones will hear a busy signal when the handset is lifted.
To cancel Tandem Ringing:
1. Press the CALL key on the extension to be considered the master phone.
2. Press the Tandem Ringing key (PGM 15-07 or SC 851: 80).
3. Dial “0” to cancel the feature.