SONET/SDH Product Family:

Concatenated SONET/SDH and Packet over SONET (POS)

While much of the networking equipment being built today is packet based rather than circuit based, SONET/SDH (a circuit-based switching technology) are still widely used technologies and indeed SONET/SDH transport networks underlie the majority of packet networks. Cortina has a variety of products which enable equipment manufacturers to provide support for, and connection to, such legacy SONET/SDH networks (see Figure 1).

Cortina supports various types of SONET/SDH Interfaces from 155 Mbps up to 40 Gbps. Our newly released Cortina Systems® CS1999 40G SONET/SDH Framer and POS Mapper (CS1999 Framer/Mapper) is the first OC768c POS framer/mapper , which provides a mapping solution for POS applications.

Cortina provides other SDH/SONET mapping solutions including GFP, ATM, GE, 10GE LAN, and 10GE WAN. For improved bandwidth utilization, we also support Virtual Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS,) which allows automatic adjustment to the available line bandwidth. SeeTable 1 and Table 2 for a list of Cortina SONET/SDH and POS products. Cortina’s SONET/SDH products provide performance monitoring and networking support for various client signals such as OTN (G.709), SONET/SDH, and 10GE. The devices feature configurable standards compliant interfaces.

An example aggregation solution is shown below in figure 2 using the IXF19301. In this example, client data is aggregated to a 4xOC48 line rate.