SBC expands Nortel pact

Nortel Networks this week said that SBC Services, an affiliate of RBOC SBC Communications Inc., will purchase Nortel's OPTera Metro 5100 coarse wavelength division multiplexer (CWDM) for its network.

SBC plans to use the OPTera Metro 5100 to expand its managed wavelength service offerings, including optical Ethernet and storage services, throughout its 13-state territory.

SBC signed a contract with Nortel last year to install Nortel's higher-end OPTera Metro 5200 to support its Multi-Service Optical Networking (MON) service.

MON provides companies with high-bandwidth connections between metropolitan-area sites for applications such as data center mirroring.

SBC's MON service can provide customers with speeds of up to 80G bit/sec for protected traffic, where half the available bandwidth is reserved for a failover and 160G bit/sec for unprotected traffic. Contracts start at around US$30,000 per month for a 60-month contract, according to SBC.

The addition of Nortel OPTera Metro 5100 will enable SBC to support a broader range of MON services, such as storage area networking (SAN) and Gigabit Ethernet, Nortel says. The OPTera Metro 5100 will also enable SBC to expand its addressable market beyond large companies to mid-sized enterprises, Nortel says.

OPTera Metro 5100 is designed for smaller bandwidth requirements that extend wavelengths to the customer premise. OPTera Metro 5200 is a platform for metropolitan access and interoffice applications.

The 5100 is a six-slot, CWDM version of the 20-slot OPTera 5200 core DWDM system designed for branch office environments and as a link into a 5200-based metro core. The OPTera 5100 is optimized for access rings, collector rings and point-to-point applications.

The 5200 takes wavelengths coming in from the 5100 and maps them into different wavelengths on the core ring, and also interconnects core networks.

The 5100 and 5200 enable service provisioning over a shared metro WDM infrastructure, Nortel says. Metro WDM is usually the luxury of companies that can afford private or dedicated optical resources.

Nortel says CWDM will save service providers over 35 percent per wavelength in power consumption and equipment costs.

Nortel is the market leader in metro WDM with a 46.2 percent share of the US$108.4 million market in the second quarter, according to Dell'Oro Group. Nortel claims its optical equipment carries more than 200 petabits of traffic worldwide per day. As recently as two years ago, the entire Internet carried only 30 to 40 petabits per month, according to Nortel.

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