Proponents of XGS-PON hailed the recent hosting of the first XGS-PON Interop Plugfest in Tauxigny, France as an important milestone on the adoption trail of a technology that many regard as a crucial stepping-stone towards the still costly NG-PON2 standard.
The event, announced by the Full Service Access Network (FSAN) Group and the Broadband Forum and held at LAN's Digital Applications Laboratory, enabled multi-vendor interop testing between elements including XGS-PON-capable optical line terminals (OLTs) and optical network terminals (ONTs). (See Gigabites: XGS-PON Gets Its Day in the Sun).
XGS-PON is proving to be somewhat controversial, however. Supporters say it is an important interim step in the upgrade process from GPON to the NG-PON2 standard. While NG-PON2 promises symmetrical speeds up to 40 Gbit/s, XGS-PON is capable of delivering symmetrical speeds up to 10 Gbit/s and thus provides an option for operators that want to provide multi-gigabit speeds sooner rather than later.
Philippe Lucas, SVP Strategy, Architecture & Standardization from Orange, said XGS-PON offers an evolution path within the PON infrastructure and covers a number of anticipated use cases beyond GPON.
"Interoperability plugfests are considered a major achievement in assessing technology maturity, and that helps to bring confidence to operators before they consider any significant deployments," Lucas added.
Opponents, meanwhile, are calling for a faster move towards to NG-PON2, which is expected to benefit bandwidth-intensive applications such as 5G mobile backhaul and multi-tenant business locations in the early phase. (See Calix Eases Transition to NG-PON2.)
Vendors attending the plugfest included Huawei Technologies, Nokia Corp., ZTE Corp., Adtran Inc., Broadcom Corp. and Calix Networks Inc.
More than 30 engineers attended overall, with the aim of testing implementation and interoperability.
— Anne Morris, Associate Editor, UBB2020