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Operational Features
5-220 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Operational IP Phone Features
Centralized Conferencing (for Sylantro and Broadsoft Servers)
The IP phones include support for centralized conferencing (Ad-Hoc
conferencing) for Sylantro and Broadsoft servers. This feature provides
centralized conferencing on the SIP server (versus localized, on the phone) and
allows IP phone users to do these tasks:
• Conference two active calls together into a conference call.
• When on an active conference call, invite another party into the call.
• Create simultaneous conference calls on the same IP phone (Sylantro servers
only). For example, the IP phone user at extension 2005 could create these
two conferences, and put one conference on hold while conversing with the
other party:
— Line 1: conference together extensions 2005, 2010, and 2020.
— Line 2: conference together extensions 2005, 2011 and 2021.
When an IP phone user is connected to multiple conference calls, some
outbound proxies have maximum call “hold” time set from 30-90 seconds.
After this time, the call that is on hold is disconnected.
• Disconnect from an active conference call while allowing the other callers to
remain connected.
• Ability to create N-way conference.
• Join two active calls together into a conference call.
• Incoming or outgoing active call can join any of the existing conferences.
If the administrator does not configure centralized conferencing, then the IP
phone uses localized conferencing by default.
An Administrator can configure centralized conferencing on a global or per-line
basis using the configuration files or the Aastra Web UI.
Note: When you configure centralized conferencing globally for an IP
Phone, the global settings apply to all lines. Although, for the global
setting to work on soft lines, the user must configure the lines with the
applicable phone number.