The Internet changed that. Data now outweighs voice both in traffic volume and growth rates. Cisco provides several solutions for the optical MAN, giving service providers the choices they need to meet their particular infrastructure and transport requirements. Where fiber exhaust is imminent, Cisco offers DWDM solutions optimized and priced for the metro to increase fiber capacity. Ethernet as Broadband An emerging trend in broadband access service is Ethernet to the metro ring.
Ethernet is relatively inexpensive and enterprise customers understand it.
To transmit a DS1 signal up to an OC-48 ring requires a minimum of four boxes. Sigma Networks, based in San Jose, California is delivering massive metro network capacity to its carrier customers in major metropolitan areas of the United States. The metro network is based on the multiservice flexibility of the Cisco ONS 15454 Optical Transport Platform and the DWDM capacity of the Cisco 15200 series DWDM system. We have been told that our approach is rather unique in the architecture we've chosen to achieve very rapid turnup times with very high speed bandwidth. Like all startups, we like to think outside the box.