NEC SL1000, Features And Specifications Manual

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Tandem Ringing
Description
Tandem Ringing allows an extension user to have two telephones with one telephone number. For
example, extension 205 (the master telephone) sets Tandem Ringing with extension 206. When exten-
sion 205 receives an incoming call, both extensions 205 and 206 ring. Callers would dial the master
extension number (extension 205 in this example). When either the master telephone or slave tele-
phone is in use, the other telephone cannot be used for outgoing calls or incoming calls.
The multiline terminal must be paired with either a single line telephone or a Wireless DECT (SIP)
handset. It cannot be paired with another multiline terminal or a SIP terminal.
A single line telephone must be paired with another single line telephone or a Wireless DECT (SIP)
handset. It cannot be paired with a multiline telephone or a SIP terminal.
Conditions
• The slave telephone cannot call the master telephone.
• Extension numbers up to four digits can be registered on the Tandem Ringing key. Extension num-
bers over as well cannot be registered.
•
If Tandem Ringing is enabled, and one of the extensions is busy, no additional calls can be received
or placed from either telephone.
• Tandem Ringing can support up to 128 pairs of Tandem Ringing extensions.
• The extension user which enables Tandem Ringing is the master, while the slave telephone is the
extension entered by the user while setting up the feature.
• A slave telephone ignores the settings for DND and follows the master telephone settings instead.
• Voice Call is not supported on a multiline terminal with Tandem Ringing.
• Calls placed on Hold while Tandem Ringing is active, immediately recall if the handset is placed On-
hook.
• A slave telephone ignores the settings for Ring Groups and follows the master telephone settings
instead.
• To transfer calls between the two Tandem Ringing stations, a System Park Orbit should be used.
• A message waiting indication set for the master telephone only lights the message waiting LED on
the master telephone.
Default Settings
Disabled
System Availability
Terminals
Master Telephone:
TDM Multiline Terminals or Single Line telephones
Slave Telephone:
Single Line telephones or a Wireless DECT (SIP) handset.
Required Component(s)
ID using Wireless DECT (SIP) handsets (Refer to Wireless DECT (SIP) on page 1-617 .
ISSUE 1.0 SL1000
T
Tandem Ringing 1-484