BOCA RATON, Fla. -- Siemens Communications, Inc., today announced the availability of its third generation of fully tunable SURPASS® hiT 7500 optical transponders, with 10 gigabits per second capacity. With the SURPASS hiT Dense Wavelength Division Multiplexing (DWDM) platform, Siemens becomes a leading high-volume vendor deploying Maximum Likelihood Sequence Estimator (MLSE) technology designed to dramatically improve dispersion tolerance for Long-Haul (LH) and Ultra-Long-Haul (ULH) optical routes.

The addition of the MLSE technology to the SURPASS hiT DWDM platform increases dispersion tolerances over distances beyond 1,000 kilometers, enabling service providers to streamline dispersion turn-up procedures and make end-to-end management easier along optical routes. With MLSE, service providers can reduce and in most cases eliminate the need - as required of older LH/ULH systems - to send technicians out to the field with expensive equipment to verify that residual dispersion tolerances are within acceptable ranges for operation.

In addition, the new SURPASS hiT DWDM platform has improved density of multiplexing transponders (256 client ports at 2.5 gigabits per second on a single-bay footprint). This helps reduces space requirements for the operator. In addition, for more deployment flexibility, the Siemens' transponder technology supports a number of client types while preserving full-band tunable lasers. New clients, for example, include10 gigabit Ethernet LAN PHY and full G.709 transparency. This enables service providers to reduce the complexity of the system and the number of spare parts required.

"Siemens strengthens its competitive footing significantly on the SURPASS hiT 7500 thanks to its new transponders, establishing solid differentiation", said Dave Dunphy, Principal Analyst of Optical Infrastructure at Current Analysis. "This includes OpEx differentiators combined with competitive muxponder (multiplex transponder) density, band-wide tunable characteristics and 10G LAN and WAN PHY support to give Siemens a strong competitive offering."

Siemens AG