312000 internet telephony(9.2)

312000 internet telephony(9.2)
Consumer
VoIP 101
S B C C O M M U N I C AT I O N S I N C .
CONSUMER VOIP OVERVIEW
SBC companies have offered Internet Protocol (IP)
services to businesses since 1996, and today offer a
full portfolio of IP services to meet the needs of
almost any business, large or small. IP services
address what is perhaps the hottest topic among
CIOs today – voice and data convergence. In fact,
business-class VoIP is moving into the mainstream.
However, IP for business is just the start. SBC
companies will soon introduce a unified
communications service that uses the power of IP
to let consumers and small businesses transform
their email, fax, wireless and landline services into
a seamless, integrated personal communications
system with a single inbox.
While some companies are offering Voice over IP,
many of today’s residential VoIP services still have
some drawbacks. Accordingly, with the superior
quality, features and low rates available for
traditional phone service, consumers should
take a close look at the pros and cons of
residential VoIP before investing in the service
and required hardware.
Price: To use most consumer VoIP telephone
services, you must have a broadband Internet
connection. Because the standard cost of a VoIP
package (usually around $30-40 per month)
doesn’t include the cost of a separate broadband
connection, customers may have to add up to $50
per month to the VoIP cost.
Power/911: Because VoIP technology today
requires a separate power source and a broadband
connection, some VoIP phones may not work
during power outages, and that means customers
can’t make emergency phone calls. In contrast, the
traditional phone network is self-powered, which
lets you use traditional “corded” phones during a
power outage.
With some services, VoIP users must register with
their VoIP service providerfor 911 services for each
location where they use their phone. Without
E911 services, the emergency operator may not be
able to find the caller.
Talk and surf simultaneously: DSL and cable
modem users with traditional telephone service
can talk and surf at the same time. Most VoIP
users need a new piece of equipment to talk
while surfing.
Current limitations: Some devices that require
traditional telephone services, such as fax
machines, alarm systems, personal video recorders
and satellite TV units, may not function properly
when used with VoIP services.
Multiple phones: Most analog telephone adapters
(ATAs) used by consumer VoIP providers can
handle only one telephone. Consumers who want
multiple phones in their homes will need to buy
additional equipment or configure a new wiring
solution.
Call quality: So far, most VoIP providers can’t
match the reliability, features, and quality of
traditional residential phone services. Users may
experience poor voice reception or dropped calls.
Consumer
VoIP 101
COMPARING PHONE SETUP
Typical Consumer VoIP
Telephone
Jack
Standard
Power
Outlet
CABLE OR DSL
MODEM
Typical
Traditional
Phone
Consumer VoIP requires
a broadband Internet
connection. If the
broadband connection
goes down, the phone
won’t work.
Telephone
Jack
Power
Strip
BROADBAND
MODEM
ROUTER
ROUTER
TELEPHONE
(to computer)
If you want to use
your broadband
for your computer
and your phone,
you’ll need a
router to send
high speed
Internet to both.
ANALOG
TELEPHONE
ADAPTER (ATA)
ATA
TELEPHONE
To convert VoIP
telephone calls to a
regular phone, you
need an ATA, or
Analog Telephone
Adapter. Usually
only one ATA comes
with the service, so
you’re limited to
one phone unless
you purchase
additional
equipment.
POWER
Because all of these devices between the
phone jack and your Internet connection
require power, your VoIP phone is
dependent on electricity. If there’s an
outage, your VoIP phone won’t work. (A
traditional phone line provides power to
a wireline phone, so it works even when
the power doesn’t. SBC companies
recommend that consumers have at all
times at least one traditional phone line
in their home for backup in the event of a
power outage.)
Page 2
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Consumer VoIP 101
Source: SBC Companies
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