ImageStream offers three different
pairs of DS3 and E3 monitor cards for the 32-bit 33
MHz PCI bus. The 580-DS and the 580-E3 are ImageStream's
lowest cost DS3 and E3 monitor cards; the 880-DS and
880-E3 are ImageStream's midrange DS3 and E3 monitor
cards; and the 780-DS and 780-E3 are ImageStream's high-end
co-processed DS3 and E3 monitor cards.
Each of the three monitor card platforms uses a different
chipset to provide different low-level features that
may be required for various applications. Each DS3 or
E3 CSU/DSU operates at full-speed with all TDM time
slots activated.