Internexa Builds a WDM Backbone Network in Peru and Colombia

Headquartered in Medellin, Colombia, Internexa is a multinational telecom service provider that owns the largest cable telecom network in South America. Its optical cable stretches more than 29,000 km and connects Venezuela, Colombia, Ecuador, Peru, Chile, Argentina and Brazil. Internexa provides Latin American operators with data transmission and fiber lease services.
With LTE deployment, higher bandwidth is required for home use, and data services of operators are growing exponentially. Therefore, Internexa is deploying new 100G WDM networks in Latin America to take the place of original 10G WDM backbone networks. The goal is to improve overall network capacity and meet the needs of large data volume.

Facing the Challenge with 100G Networks

100G OTN is the most sophisticated high-capacity optical transmission technology. It enables a transmission rate of 100 Gbps with a single wavelength and a transmission capacity of 8 Tbps with a single fiber. This saves a huge number of optical fibers. The 100G OTN standard and technology have matured, and ZTE's 100G solution has been commercially used by many operators in the global market.
In 2015, Internexa adopts ZTE's ZXONE 8000 100G OTN solution for its optical networks in Peru and Colombia. With this solution, the existing bandwidth is 10 times higher than the original one. Moreover, the networks enable super-large capacity point cross-connection and intelligent traffic scheduling. This enables Internexa to manage large bandwidth demand.

Customized Solution to Create Values

After fully understand the WDM backbone network needs in Peru and Colombia, ZTE proposed the ZXONE 8000-based 100G OTN + Muxponder integrated solution to help Internexa rapidly increase network bearing capacity. The 100G OTN + Muxponder solution has the following advantages:
●  A combination of OTN and Muxponder to fit with network needs.
   The WDM backbone network in Colombia required existing services to be migrated to the new network. The service matrix is very complicated with numerous small-particle services (GE and 2.5G). The solution enables Internexa to reduce total cost of ownership (TCO), especially floor space and power consumption.
   With this solution, the existing small-particle services use the CX21/CX31 OTN cross-shelf for access, which reduces the number of relays and optical fibers. It also enables flexible service scheduling, which reduces network construction cost. The 10GE/100GE large-particle services use the Muxponder board card for access, which minimizes the power consumption and reduces the maintenance cost.
●  Industry-leading dispersion tolerance and polarization mode dispersion (PMD) tolerance.
   Internexa's project in Peru is special because of its large geographical span, many long sections, and long transmission distance. The ZXONE 8000 has a dispersion tolerance of +/-70000 ps/nm and a maximum differential group delay (DGD) tolerance of 180 ps, which is the best in the industry (that is, the least cost for the same PMD). Because no dispersion tolerance compensation or PMD compensation is needed for a transmission distance of 3500 km, the solution is very reliable for long-distance backbone transmission.
●  Optimized dispersion compensator module (DCM) solution to improve the long-distance transmission performance.
   Internexa's project in Peru needs one 10G lambda to be deployed. Therefore, the ZXONE 8000 uses the single-wavelength DCM solution to avoid 10G/100G mixed transmission, so as to improve the system's transmission performance.
●  Comprehensive service accesses.
   The ZXONE 8000 100G OTN system boasts the most comprehensive access capabilities in the industry. It is able to meet various access needs.
●  Service protection and system protection.
   To satisfy the protection needs of different services, Internexa uses ZTE's optical path 1+1, optical multiplex section 1 + 1, and ODUk 1+1, with the switching time of less than 50 ms. In addition, the ZXONE 8000 provides cross-connection units with M:N shared protection to tolerate greater system damage.

Cooperation for a Win-Win Future

In 2015, Internexa invited bids for its 100G WDM backbone networks in Peru and Colombia. With its competitive products, optimum network solutions and superior technical supports, ZTE won the bid from a field of ten international mainstream optical communications suppliers. ZTE will be the sole company building the 100G WDM backbone networks in Peru and Colombia. When the networks are completed, the single-link capacity will increase from 400G/800G to 4T/8T.
At the same time, Internexa has chosen ZTE as one of its regional strategic partners and is about to cooperate with ZTE in building WDM networks in Brazil and Argentina. The cooperation between Internexa and ZTE will definitely create a win-win future.