Feeds

London's hotspots unfit for voice

Two-thirds won't give you a decent line

Internet Security Threat Report 2014

Most of London's wireless hotspots can't support more than one voice-over-IP call at a time, according to a survey by WLAN analysis specialist AirMagnet.

The company surveyed 15 hotspots around Oxford Street and the City last month. It said that 11 of them suffered from coverage problems that prevented multiple simultaneous voice-over-Wi-Fi calls.

AirMagnet boss Ian Schenkel said that without remedial work, people trying to use Wi-Fi or dual-mode phones could suffer dropped or poor quality calls, and might simply give up trying to use it as an alternative to their current phone service.

"The hotspots were OK for data use," he said, "but network usage is evolving, and now the infrastructure needs to evolve to keep up."

He said the most common problem was being on the same channel as a neighbouring network, while other hotspots suffered interference from Bluetooth phones or - especially in sites also serving food - from a microwave oven.

Most interference issues can easily be fixed by a site survey, using a portable PC and WLAN analysis software, and adding extra access points if needed, he claimed. He acknowledged that a thorough survey takes time -that's why AirMagnet only checked 15 sites, but added that he believed it was a representative sample.

"It's much more three-dimensional than just adding more access points," he said. He pointed out that while metal air conditioning ducts will block radio signals, glass can reflect them.

"The best place we found was a phonebox with BT OpenZone," he said. "It was very well set up - it's somewhat ironic, given that it's a phonebox and we were testing voice-over-Wi-Fi."®

Providing a secure and efficient Helpdesk

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.