Supports arbitrary combinations of multiple DS0 channels, allowing transport and switching of diverse media types. Subrate switching, down to 8 kbps, multiplies channel capacities up to 8x, efficiently handling slow speed data links and compressed voice. H.110 back plane bus provides low latency switching of TDM data, offloading the CompactPCI bus from media stream traffic. On-board microprocessor with Real Time OS handles low level board control, simplifying host software tasks and improving call event response time. LAP B, LAP D, Q.921 and Q.931 ISDN and Q.SIG run on embedded CPU, eliminating additional hardware.
Software is downloadable to flash memory for simplified upgrades and field support.
Dual 10 and 100 baseT Ethernet ports provide flash download capability, access to built-in test facilities and remote host communications. Access to raw signaling data provides flexibility in customizing systems. Hot swap allows mission critical systems to continue operation during maintenance and upgrade procedure. Span and board status displays clearly show current board status. The PMC750 is a single PMC site PowerPC 750 add-on option for the SuperSpan card.