Description:

The OC-48 OAU performs all necessary synchronization, pointer and overhead processing. To provide traffic protection, two OAUs can be installed. One OAU, installed in the OAU-A slot, provides the optical interface to the working ring. The other OAU, installed in the OAU-B slot, provides the optical interface to the protection ring.

Two different OC-48 OAUs are offered. The standard OC-48 OAU can be mounted in the OSIRIS STD Shelf. For the OSIRIS XTD and OSIRIS XTS shelves, the OC-48 OAU is mechanically coupled with a buffer interface unit (BIU) via a slider system. The OAUs have two connectors for input/output connection to fiber patch cords. ST, SC and FC connectors are available.

Benefits:

• Capability to achieve wide-range distances and operate in a multi-vendor network
• Cost-effective and compact unit
• Easy in-service capacity upgrade
• Multi-ring interconnection capacity
• No requirement for external synchronization modules
• Robust SONET-based protection

Features:

• Various optical budgets and wavelengths available
• One-step multiplexing allowing time slot assignment
• Single OAU faces both east and west directions in a ring
• Drop-and-continue support
• Built-in synchronization circuitry
• Full support of unidirectional path switched ring (UPSR) protection
• Capability to interoperate with other SONET equipment
• Ability to drop any STS-1 from OC-48 line
• Support for concatenated traffic (STS-3c and STS-12c)