SONET/SDH interfaces

The Tmedia TMG3200 and TDV TMP6400 TDM hardware adapter provides an interface for up to two SONET or SDH lines: one for operating as the active link with the other link operating in standby mode for emergency switchover.

In the case of a SONET interface, an OC3 line interface is configured to serve a selection of line services. In the case of an SDH interface, an STM-1 Optical line interface with related line services are configured. A conceptual image is shown below:

Note: The line interface to line service relationship shown above is not meant to be an exhaustive list of all the combinations of line service payloads and their child line services. For further information refer to section 5.3 Sonet and SDH in the TB640 User Guide, 9000-00002-2H.