
HCS-4100MA/FS/52. Fully Digital Congress System Main Unit (discussion, voting, 64 CHs, single-mode optical fiber interface).

HCS-4100MC/52. Fully Digital Congress System Main Unit (discussion, voting).
HCS-4100MA/FS/52. Fully Digital Congress System Main Unit (discussion, voting, 64 CHs, single-mode optical fiber interface).
HCS-4100MC/52. Fully Digital Congress System Main Unit (discussion, voting).