CPqD reports on TIP Cassini, DCSG transport trials in Brazil

Brazilian research organization CPqD (Centro de Pesquisa e Desenvolvimento em Telecomunicações) has released results of recent tests of the Telecom Infra Project’s (TIP’s) Cassini optical and packet transponder and Disaggregated Cell Site Gateway (DCSG) in extended metro and long-haul scenarios. The tests leveraged CPqD’s work with several technology vendor partners at the TIP Community Lab CPqD opened in Campinas, Brazil, in 2018.

Both Cassini and the DCSG are efforts within TIP’s Open Optical & Packet Transport (OOPT) group. Cassini is an open packet and optical transponder that integrates 200GbE switching with Layer 1 optical transport functions as line-card modules (see "Edgecore Networks offers Cassini whitebox packet transponder to Telecom Infra Project"). The whitebox packet transponder is designed to meet data center interconnect, metro, and access backhaul requirements. DCSG is a 1RU cell site router that supports a variety of Ethernet connectivity options for client and network sides. The open platform supports Layer 2, Layer 3, and MPLS features with native time synchronization protocols such as IEEE-1588 v2 and Synchronous Ethernet. The DCSG has already been the subject of several field trials and deployments (see, for example, “Telefónica rolls out Telecom Infra Project’s Disaggregated Cell Site Gateway” and “Vodafone trials TIP Distributed Cell Site Gateway in South Africa”).

CPqD has worked with several partners at the TIP Community Lab, including Padtec, EdgeCore, IP Infusion, Lumentum, and Viavi Solutions. In the recent trial, CPqD and its collaborators achieved 100- and 200-Gbps coherent optical transmission over 2,000 km without regeneration using Padtec’s hybrid optical amplifier. Additional scenarios tested included 850-km extended metro. In both instances, the 100G and 200G DWDM channels were transported as alien wavelengths over a separate transport system. Padtec supplied much of the optical network hardware for the demonstration, including a DWDM open line system that comprised ROADM, a combination of 200-Gbps and 1.2-Tbps transponders, hybrid optical amplifier (EDFA and Raman), and optical switch elements.

“Becoming a member of the TIP community was a rewarding experience for us,” said Argemiro Sousa, Padtec’s business director and acting CEO. “We are very happy with the results achieved by the joint effort of all the partners. This participation reinforces Padtec’s role as a high-tech company which invests heavily in R&D and contributes to the formation of an ecosystem in the area of optical systems.”

“IP Infusion is excited to have collaborated with TIP to demonstrate and prove how disaggregation delivers faster innovation and lowers TCO [total cost of ownership],” added Atsushi Ogata, president and CEO, IP Infusion. “In this successful trial, our OcNOS network operating system, combined with Cassini and DCSG, proved once again that high capacity and new advanced services can be achieved with disaggregated solutions.”

“With this trial, CPQD’s TIP Community Lab hopes to have fulfilled its role as a promoter of innovative technologies, such as the open and disaggregated solutions of the TIP OOPT, Cassini and DCSG project. In addition, we also contribute to the integration of technologies developed by CPQD itself over the years and transferred to the national industry, in this case to Padtec,” concluded Gustavo Correa, technology specialist at CPqD.

The complete test report is available for download.

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