Time Division Multiplexing Converter

The Time Division Multiplexing (TDM) converter module for the Fiber Service Platform-II (FSP-II) allows the transmission of four Enterprise System Connection (ESCON) channels over one wavelength of light. Used in conjunction with the optical MuxDemux system, which bundles up to 32 wavelengths, the capacity of the FSP-II can now be increased from 32 to 128 ESCON channels. ESCON runs at a bit rate of 200 Mbps and is used primarily for point-to-point connections, especially for Storage Area Networks (SANs).

The TDM Channel Card operates by converting the four 200 Mbps ESCON channels from the customer equipment into electric signals. It then multiplexes them, defined by timeslots, to a single data stream at a data rate of 1.25Gbps. This data stream has an optical output signal at the standard FSP-II remote wavelength within the 1550nm ITU-T standard. This process works opposite for the receive direction.

The TDM module is a hot-pluggable card that fits in the standard FSP-II chassis with all other FSP-II cards. In addition, standard management features such as monitoring and controlling of local and remote system parameters via SNMP are available.

Enterprises implementing FSP-II with TDM modules are able to cut costs by nearly 45% compared with similar installations of FSP-II without TDM deployed. The expense of leasing or buying up to three additional pairs of fiber is also saved.

ADVA Optical Networking, 19 Speer Road, Suite 104, Ramsey, NJ 07446. Tel: 201-995-0080; Fax: 201-995-0081.