Subject: [NEXTEL-1] COMMWORKS PUSH-TO-TALK APPLICATION

From: Marcel <[email-masked]>
Date: Tue, 06 May 2003 19:46:44 -0400

COMMWORKS PUSH-TO-TALK APPLICATION

Key Benefits
New Revenues
The CommWorks® Push-to-Talk
(PTT) application enables new
enhanced services for which
providers can charge additional
fees from subscribers.

Competitive Offering

Push-to-Talk gives service providers
a compelling product that they
can use to attract new customers
with competitive offerings, and
retain existing customers.

High Availability

The solution operates with high
availability within challenging
Radio Frequency (RF) environments.
Enhanced Services

The CommWorks application
utilizes Presence, Availability,
and Location (PAL) technology,
enabling service providers to
deploy common services such as
enterprise instant messaging and
Push-to-Talk store and forward.

Easy Integration

The CommWorks solution is compatible
with standard provisioning
and billing systems, as well as presence,
instant messaging, and other
enhanced services platforms.
Deploying
Push-to-Talk
(PTT) Services for
Wireless Voice and
Data Networks

WIRELESS

As the number of mobile wireless
subscribers increases throughout the
world and penetration rates for wireless
callers reach saturation levels, service
providers must invent new ways to
differentiate themselves and attract
new customers. Push-to-Talk (PTT)
provides an ideal solution for
businesses and large organizations
with large groups of roaming employees
that require intra-company communications.

Businesses that find a
need for such capability might employ
sales teams, real estate agents, hotel,
restaurant, or hospital staff, building
maintenance workers, and government
employees.

Among the breed of attractive new
services gaining significant momentum
is Push-to-Talk functionality, which
draws on the same technologies used
for instant messaging and walkie-talkie
like communications. This service
offered by CommWorks® Corporation
enables wireless callers to instantly
speak with another user or entire
groups of users by simply pushing a
button on their wireless handset.
This application might be used, for
example, by cable installers working
for a large multiple service operator
(MSO) who could instantly communicate
with field headquarters. This could
result in shorter times between service
calls, translating to greater customer
satisfaction and reduced operational
expenses. The company would also
save money on wireless calling, since
installers would not have to use
expensive minutes.

The CommWorks application also provides
enhanced communications for
home and residential wireless users. By
accessing a buddy list, callers can
instantly talk to one or more friends
and family members with a simple
push of a button.

Using the Push-to-Talk (PTT) application in
CommWorks®-based third-generation (3G)
wireless data networks.

Direct one-to-one and one-to-many mobile
communications without dialing

PSTN
Internet
Presence Server
Carrier Network
PDSN
BSC
BTS
BTS
PTT Server

COMMWORKS PUSH-TO-TALK APPLICATION
CommWorks Headquarters, 3800 Golf Rd., Rolling Meadows, IL 60008

Current Push-to-Talk offerings are
highly successful, accounting for a very
high average revenue per user (ARPU)
in areas where the feature is offered.
Subscribers, such as field employees
and other workers who travel or roam
around large areas report that their
Push-to-Talk enabled wireless phones
are indispensable. This makes them
less likely to switch to another
provider.

Moreover, this type of use
pattern presents an enormous opportunity
for service providers with nextgeneration
networks and text messaging
and IP capability. Those who have
upgraded their systems now have a
way to leverage their equipment
investment to offer enhanced services.
In addition, it gives them a way to
compete against the incumbent
providers of Push-to-Talk applications.

CommWorks Solution

The CommWorks PTT solution has
been designed for seamless integration
with CommWorks 3G wireless data
networks. The application is enabled
by a high performance server designed
for low delay, real-time communications
and a mobile client that operates
on a variety of handsets and user
devices.

Based on Session Initiation Protocol
(SIP) and Real Time Protocol (RTP)
industry-standards, the solution utilizes
proven packet loss recovery, flow
control, and compression techniques
that operate with high availability
within challenging RF environments.
In addition, the CommWorks platform
utilizes advanced traffic-engineering
mechanisms that minimize call
setup, latency, jitter, floor control handover
time, and bandwidth resources.

CommWorks PTT Server

The CommWorks PTT server is part
of the CommWorks line of back-end
servers, which reside in the service creation
layer of the CommWorks threetier
architecture. Deployable in
CommWorks-based 3G wireless networks,
the product offers both centralized
and distributed architectures for
implementing server resources appropriately
throughout the network,
depending upon traffic volume and
packet network configurations. The
server product supports thousands
of simultaneous wireless subscribers
performing a variety of one-to-one
and one-to-many instant communications
sessions over 3G Code Division
Multiple Access (CDMA) packet
networks.

In addition, the server provides the
following functionality:

• Person-to-person Push-to-Talk
•One-to-many Push-to-Talk
•Talk request
•Wireless chat
•Buddy Lists
•Optimized call control
•Robust media processing
• SNMP network management
• Fault management
•Data path processing
• Presence, Availability, and Location
(PAL) APIs
• Subscriber provisioning and
billing APIs
• Platform upgrade path for realtime
multimedia applications
(games, entertainment, consumer
applications)

CommWorks PTT Client

The CommWorks PTT client can be
easily adapted for use with service
provider supported handsets and
devices such as personal digital assistants
(PDAs). This end-to-end solution
operates on a wide variety of
client devices and operating systems,
including embedded BREW, J2ME,
Symbian, Palm OS, and Pocket PC
platforms. The client can also be used
on desktop PCs running Windows 98,
XP, and NT.

Future Services

Service providers that take advantage
of the CommWorks PTT solution can
later offer additional revenue-generating
enhanced offerings, since it utilizes
the same technology used for PAL
services.

These include:
• Store and forward
• PTT voice mail
•Rules-based presence
• Instant Messaging (IM) for
Enterprises
•Multimedia Messaging Services
(MMS) applications
• Location-based services

http://www.commworks.com/pdfs/wireless/PTT_wirelessAP_0303.pdf

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