IMS technologies and strategies for next-generation networks

Supporting voice over LTE is a big nut that most vendors are trying to crack, and two big milestones have been crossed this week in the quest to make VoLTE truly commercially viable.Nokia Siemens Networks has completed successful IMS-compliant voice calls and SMS messaging using 3GPP-standardized LTE equipment, it said Thursday and says it will also soon conduct VoLTE test ...

Though “IMS” is a buzzword no more, operators have quietly been moving into the next stage of deployment with the convergence architecture. "Our 2009 IMS service provider survey indicates that the IMS market is advancing from early-stage services to the next phase,” said Diane Myers, Infonetics Research’s directing analyst for service provider VoIP and IMS. “The two most important indicators ...

Dozens of news stories have run in recent months speculating about “what went wrong at Nortel Networks Corp.” So xchange decided to let ex-Nortel employees and several industry players tell it in their own words. Our oral history reveals the point when the 114-year-old company really started to go off track: a cultural shift from quality product output to a ...

Session border controller specialist Acme Packet has announced that Germany's Telefonica O2 Germany and Telnor Sweden have both deployed Acme Packet gear to support IMS services.Both carriers will use the vendor’s Net-Net 4000 series session border controllers. O2 will support IMS-based residential VoIP, while Telnor will use it for hosted business unified communications.“There’s not a single Tier 1 that doesn’t ...

In a move that would allow it to hook its femtocell footprint into its IMS architecture, Sprint-Nextel Corp. has signed a deal to use Airvana Inc.’s HubBub EV-DO femtocells.The mini-base stations known as femtos are typically deployed in the home to improve indoor coverage for cellular service. They also improve network capacity for operators by taking advantage of a subscriber’s ...