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Chapter 1 –
System Overview
1-4
LPR
Lost Packet Recovery (LPR) is a Polycom algorithm designed to protect IP
video calls from the impact of network packet loss. LPR offers five key
benefits:
• Allows users to conduct high quality video calls over packet loss-prone
IP networks (DSL, cable, satellite, high contention LANs / WANs.)
without suffering the effects of packet loss.
• Protects video calls from short-term network issues by temporarily
adjusting the bit rate of the call in progress.
• Reduces the jitter buffer and associated delay.
• Allows an organization to use all available bandwidth for its video calls.
• Protects all elements of the videoconference call; voice, video, and
content.
IVR-Enabled Conferencing
The Interactive Voice Response (IVR) function lets participants perform
various operations during ongoing conferences according to voice prompts.
The participants use their endpoints’ keypads and remote control to interact
with the conference’s menu-driven scripts using Far-End Camera Control
(FECC) and DTMF codes.
Recording Link
The RMX system supports recording links similar to other Polycom MCUs.
This recording link can work with the Polycom RSS to record the content of
an RMX conference.
Conferencing Capabilities and Options
Multiple Ways to Hold a Conference
The following options are available when setting up conferences:
• Instant Conference – Hold an instant one-time-only conference. The
conference is deleted from the MCU immediately after its completion.
• Meeting Room – Meeting rooms are stored in the MCU memory, without
occupying any MCU resources until used. They can be activated anytime.
• Reserve a Conference - The reserved conference is stored at the RMX and
only reserves system resources for the call’s specified time. The system
automatically initiates and terminates the conference according to the
reservation start and end times.
Connection Methods
• Dial-out: automatically connect pre-defined participants (automatic line
rate detection)
• Dial-in:
― Inbound calling by pre-defined participants