Four years ago, telecom experts were about ready to write off the
100-year-old wired phone system, known in the industry as POTS
(Plain Old Telephone Service), predicting it would soon be eclipsed
by the Internet and wireless phones.
But researchers from the Illinois Institute of Technology and
Lucent Technologies' Naperville campus have developed new software
that turns POTS into PANS (an industry term for Pretty Amazing New
Stuff), moving the old phone system into the Internet loop.
Over the last two years, Vijay Gurbani, 37, a doctoral candidate
in computer science at IIT and a Lucent researcher, and his
colleagues have added some Internet digital magic to old-fashioned
analog phones. This work, which has earned one patent thus far for
Gurbani, is expected to result in Lucent commercializing the
services within a few years. So the technical breakthrough could be
coming soon to phones in the home and office.
"In the Internet era, wired phones were being written off,"
Gurbani said. "Cellular companies were spending billions of dollars
on new infrastructure to make 3G [third-generation] services
available for cell phones. I wanted to see if it was possible to
make 3G-type services available on landlines."
It was possible.
In fact, IIT and Lucent researchers have developed software that
recycles POTS so it can handle buddy lists and instant messaging,
the same kinds of services that have been wildly successful over the
Internet for America Online and MSN, and also are available over
some Internet appliances, such as 21/2G and 3G cell phones and
personal digital assistants.
"The phone network has been used for its voice capabilities and
the Internet for its data capabilities. The two networks have
virtually never talked to each other--until now," said Xian-He Sun,
Gurbani's computer science professor.
Researchers developed software that connects landline phones to
the Internet. Ironically, in the past, the old system mainly was
used to connect computers to the Net.
In a demonstration at Lucent, a landline phone was lifted and
replaced on the cradle, and it sent a signal that made the network
aware that the user was home, popping up an icon on a buddy list on
a computer screen.
Buddy lists have been done previously with computers and cell
phones, but never before with signals from landlines, which in the
past were considered "dumb terminals," Gurbani said.
Sun said the wired phone network could send an instant message to
an Internet user, notifying him of missed calls. This could be a
sort of mobile caller-ID to check on traditional phones at home or
He said companies could use these buddy lists to set up large-
scale phone conferences. In addition, caller ID screens on landline
phones could be used to receive text messages.
Nehal Mehta, a doctoral student at IIT, and Lucent researchers
Byron Williams and Sudha Gouthma also have worked on the project.
Mehta said the new technology has great commercial potential
because wired phones are not disappearing in North America, "where
the system is so reliable and ubiquitous."
This opens market possibilities for local phone companies, such
as SBC, BellSouth and Verizon, all of which are Lucent customers.
Doug Varney, technical manager of Lucent's network services
architecture group, said, "Traditional phone companies are looking
for new services like this because they are losing customers to long-
distance companies and wireless carriers. They could leverage their
embedded investments, and bring in new revenues by offering new
services. I think [buddy lists and instant messaging] are just the
tip of the iceberg."
Gurbani said the services next will be tested on older-model cell
phones, and other services will be developed. For instance, he said
the framework could make possible "proximity notification," a
service that triggers an e-mail from a friend's cell phone when the
friend is nearby. He said the new technology could be used by law-
enforcement officials to track suspects.
What about telemarketers or other unwanted parties tapping into
the system to find out if someone is home, in effect hacking into
Gurbani said these are real concerns: "Security and privacy
issues will have to be worked out."
He sees more advantages than disadvantages to upgrading the old
system: "This technology creates even more communication freedom for
busy people on the go."