Friday, June 08, 2007

Northwestern University eases into VoIP

By Tim Greene, Network World, 06/08/07

Northwestern University is getting rid of its old TDM phone switches not in response to a groundswell of demand for communications options unique to its new VoIP system, but to be ready for the day when that groundswell hits.

“In some sense we are buying potential," says David Carr, director of telecommunications and networking for Northwestern, about the move to Nortel VoIP switches.

Most of the university’s 18,000 phone users on two campuses say they’d be happy with phone service just as it is, according to a poll by Carr. Others are ready to embrace VoIP, but for a limited set of features that can help them do their jobs better right away.
The new capabilities include mobility and presence integrated with applications, but Carr says users weren't looking for a specific application.

Time for upgrades
As part and parcel of the VoIP project, which started in 2003 with a review of ways to upgrade two Nortel SL 100 phone switches, the university discovered it needed to upgrade its wiring closets, stress-test its network, address QoS and consider network admission control. “They all get wrapped together," Carr says.

The two carrier-grade SL-100 phone switches, one at the university’s Chicago campus and one at its campus in Evanston, Ill., were about 20 years old.

The goal was to collapse the two separate switches into a single logical switch to reduce management complexity, he says. The school also didn’t want to replace all its digital phones at once.

It decided to upgrade to the Nortel CS 2100 VoIP switch, which supports both VoIP and TDM, so users would not be forced to switch their handsets for VoIP phones. “Those who wanted to take advantage of the VoIP value proposition could do so, and those that were happy continuing to use their current telephony features and services could do so. It allowed the community to migrate at its own pace," Carr says.

The university has installed a CS 100 at the Chicago campus and expects to have one installed at the Evanston campus next month. Until then the school has 250 IP phones working on a trial basis. “Beyond that we’re waiting until we finish these upgrades," he says.

Rest of the story here

Friday, June 01, 2007

US soldiers face tough VOIP call

John Blau IDG News Service

American soldiers in South Korea face a tough call on using Internet telephony in the country.

Thursday was the last day the U.S. military community in South Korea could make VOIP (voice over Internet Protocol) calls through companies based in the U.S., such as Vonage Holdings Corp. and Lingo Inc., according to a report Thursday in Stars & Stripes, a U.S. Department of Defense authorized newspaper. Beginning Friday, all new contracts must be made with South Korean VOIP providers, the report said.

For service members used to making and receiving calls to and from the U.S. for as low as US$15 a month, the move to a South Korean provider -- and a local phone number -- could ring up a pricey phone bill.

Because U.S. VOIP providers assign service members a U.S. phone number, these users can be reached from the U.S. without callers being billed for international calling charges. Prices for VOIP services in the U.S. vary from around US$15 to $25 a month for unlimited local and long-distance calls.

South Korea's major Internet service providers, including LG Dacom Corp., said in June 2006 they would block Internet calls through companies not registered under the Korean Telecommunications Business Act. But after U.S. Forces Korea Commander General Burwell Baxter Bell said the move would impact service members' quality of life, the companies agreed to delay enforcing the act until June 1, 2007.

Demand for VOIP services have surged as service members -- and many others -- seek cheap ways to communicate with their families, friends and business partners around the globe.

Vonage offers a VOIP service that replaces the traditional telephone. Customers connect their phones to an IP-transformation device, which connects to the home or small-business DSL (Digital Subscriber Line) or cable modem. Vonage doesn't offer PC-to-PC VOIP service provided by companies such as Skype Ltd.

Brooke Schulz, a Vonage spokeswoman, was unable to confirm whether the company's service is no longer available in South Korea and, if so, whether Vonage plans to apply for a VOIP license with the South Korean government.

Companies registered to provide VOIP service in Korea include Korea Telecom Corp., Hanaro Telecom Inc. as well as LG Dacom Corp.