AT&T completes open-source XGS-PON trials

Jan. 16, 2018
AT&T (NYSE:T) recently trialed a 10 Gbps XGS-PON virtualized network using Open Source Access Manager Hardware Abstraction (OSAM-HA) ...

AT&T (NYSE:T) recently trialed a 10 Gbps XGS-PON virtualized network using Open Source Access Manager Hardware Abstraction (OSAM-HA) software in Atlanta and Dallas. OSAM-HA is formerly VOLTHA.

In the field trials, the XGS-PON system tested multi-gigabit Internet traffic and DirecTV NOW video. The telco used a virtualized broadband network gateway (BNG) function to manage subscribers.

XGS-PON is a fixed wavelength symmetrical 10 Gbps passive optical network (PON) technology. AT&T plans to use it to virtualize access functions within the last-mile access network.

For the technology to work within existing GPON networks, the telco used a coexistence element. The trials indicated that GPON and XGS wavelengths could both exist across a single fiber.

"Our network is constantly evolving. We'll continue to execute our software-based network strategy to technologies like 5G, virtualized RAN, and over time. Ultimately, instead of deploying islands of technology that have SDN control, we want to orchestrate the entire end-to-end network through ONAP," said Eddy Barker, assistant vice president, Access Architecture and Design, AT&T.

ONAP (Open Network Automation Platform) is AT&T's virtual access project within the Linux Foundation and will use the first iteration of OSAM-HA technology.

OSAM is a vendor-agnostic operational suite for managing consumer and business broadband access network elements and capabilities, separate from vendor-specific access element management systems (EMS).

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