solving radio ptt issues in voip networks · yyyymmdd ©2015 redcom laboratories, inc. redcom’s...
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Solving Radio PTT Issues in VoIP
Networks
Emergency Communications WorkshopPTC ‘16 January 2016
Charles DeRoller, REDCOM
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What is PTT?
Press To Talk
Press To Transmit
Integral to radio operation
Keys radio for transmit
Eliminate background noise
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PTT & Voice Latency
Timing (latency) of PTT signal is significant
Too early and induces background noise
Too late and communications truncated
“Don’t Shoot” becomes “Shoot” received
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PTT in Legacy Switch Networks
Extends reach globally, securely
Interconnect radio nets w/ other nets, operators, phones
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PTT in Legacy Switch Networks
PBX and C&C networks may pass PTT
Core elements must support it
Signal passed via leads (analog or digital)
Keys remote radio
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Radios and VoIP
Global migration to VoIP
Particularly for transmission
Extremely immature for radios
No specification for PTT over IP
No assurance of PTT timing
“don’t shoot” becomes “shoot”
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PTT through the IP Network
“Data Plane” for voice
“Control Plane” for PTT
Prioritize in network
Still no guarantee of proper timing
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REDCOM’s PTToIP™
Patented method of solving PTToIP™ latency
Assures radio is keyed (via PTT) before Voice
REDCOM Core switches & Radio Gateway
IP transmission network agnostic
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Customized PTT
API integration tools
Adapt to existing networks
Design VoIP-based radio networks
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Summary
PTToIP significant missing element in RoIP
No global plan to address it
REDCOM solution available today
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Contact Information
One Redcom Center
Victor, New York 14564-0995
(585) 924-6500
www.redcom.com
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Disclosure
The information presented in this presentation is subject to change without notice
or obligation.
Content produced by third parties is not necessarily endorsed or supported by
REDCOM.
The REDCOM name, logo, SLICE® and TRANSip® are registered trademarks of
REDCOM Laboratories, Inc. ClusterNet™, CommandSet™, CrucialConnect™,
Infinion™, Sigma™, and SLICE® 2100™ are trademarks of REDCOM Laboratories, Inc.
CLASSSM is a service mark of Telcordia Technologies, Inc. All other trademarks and
service marks are properties of their respective owners.
REDCOM products are covered by one or more U.S. and international patents.
©2015 REDCOM Laboratories, Inc. All rights reserved.