Circuit-Switch Fallback (CSFB) enables circuit-switched voice and SMS services to be delivered to Long Term Evolution (LTE) devices. When an LTE handset makes or receives voice calls, the device "falls back" to the 3G or 2G network to complete the call. This feature is needed because LTE is an all-IP, packet-based network that cannot support circuit-switched calls.
CSFB requires a new interface to be set up between the legacy mobile switching center (MSC) and the mobile management entity (MME) in the LTE core network. It was specified in 3rd Generation Partnership Project (3GPP) Release 8.
CSFB is often described as an interim solution for LTE operators, while Voice over LTE (VoLTE) is considered to be the longer-term goal for delivering voice and other media-rich services on LTE networks.
Light Reading founder Steve Saunders recently visited the University of North Carolina Charlotte (UNCC) where Cisco's Tetration application is providing data center analytics, simplifying SDN, helping with cloud migration and overseeing white-list security policy.
A CSP's digital transformation involves so much more than technology. Crucial – and often most challenging – is the cultural transformation that goes along with it. As Sigma's Chief Technology Officer, Catherine Michel has extensive experience with technology as she leads the company's entire product portfolio and strategy. But she's also no stranger to merging technology and culture, having taken a company — Tribold — from inception to acquisition (by Sigma in 2013), and she continues to advise service providers on how to drive their own transformations. This impressive female leader and vocal advocate for other women in the industry will join Women in Comms for a live radio show to discuss all things digital transformation, including the cultural transformation that goes along with it.