Polycom SOUNDPOINT SIP 3.1 - Manual (Page 31)

Overview
2 - 13
— Secure Real-Time Transport Protocol —Encrypting audio streams to
avoid interception and eavesdropping.
For more information on each feature and its associated configuration
parameters, see the appropriate section in Configuring Your System on page
4-1 .
New Features in SIP 3.1
The following new features were introduced in SIP 3.1:
• Access URL in SIP Message —Ability for the SoundPoint IP phones to be
able to receive a URL inside a SIP message (for example, as a SIP header
extension in a SIP INVITE) and subsequently access that given URL in the
Microbrowser.
• Configurable Soft Keys —Allows customers to create their own soft keys
and have them displayed with or without the standard SoundPoint IP and
SoundStation IP soft keys.
• Enhanced Feature Keys —Allows customers to redefine soft keys to suit
their needs. In SIP 3.0, this feature required a license key.
• Dynamic Noise Reduction — Provides maximum microphone sensitivity,
while automatically reducing background noise on SoundStation IP 7000
conference phones.
• Treble/Bass Controls —Equalizes the tone of the high and low frequency
sound from the speakers on SoundStation IP 7000 conference phones.
• Display of Warnings from SIP Headers —Displays a “pop-up” to user that
is found in the Warning Field from a SIP header.
The following existing features were changed in SIP 3.1:
• Call Forward —The Diversion field can be used by the call server to inform
the phone of a call’s history.
• Call Hold —If supported by the call server, you can supply a Music on
Hold URI.
• Local Contact Directory —A new “Label” field has been added to each
contact directory entry.
• Busy Lamp Field —The attendant can now monitor all calls states and
pickup remote calls.
Note The SoundPoint IP 300 and 500 phones will be supported on the latest
maintenance patch release of the SIP 2.1 software stream—currently SIP 2.1.3.
Any new features introduced after SIP 2.1.3 are not supported.