NEC UNIVERGE SL2100, Features And Specifications Manual

Page: 827 / 978

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
extension 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
telephone is in use, the other telephone cannot be used for outgoing calls or incoming calls.
The Multiline Terminal must be paired with a Single Line Terminal. It cannot be paired with another
Multiline Terminal or a SIP Terminal.
A Single Line Terminal can be the master of another Single Line Terminal but cannot be the master of
a Multiline Terminal.
Conditions
• The slave telephone cannot call the master telephone.
• Extension numbers up to eight digits can be registered on the Tandem Ringing key. Extension
numbers 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 64 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.
• When tandem ringing is enabled the slave telephone extension cannot be called direct, calls must
be placed to the master telephone.
• Tandem ringing is not supported for the following terminals: Operator Terminal, IP Terminal, Mobile
Extension, and Voice Mail.
Default Settings
Disabled
System Availability
Terminals
Master Telephone:
TDM Multiline Terminals or Single Line Terminals
ISSUE 1.0 SL2100
Features and Specifications Manual 1-813
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