CX950 Hardware Reference Manual
4-2
3021M100-002
4.1 V.24 Serial I/O Card
The V.24 Serial I/O card and its single port provide V.24 interface capabilities
with unbalanced signals for control, data and timing signals. It supports
synchronous or asynchronous transmission at speeds up to 128 Kbps.
4.1.1 V.24 Serial I/O Card Components
Important components on the V.24 Serial I/O Card include:
• edge connector
• port connector plate
• signal LEDs
• port configuration jumpers
The edge connector fixes the card to any one of the motherboard’s expansion slots
1-8.
The connector plate fixes the female DB-25 connector to the chassis’ rear panel
with two Phillips-head screws and limits dust accumulation and electromagnetic
radiation.
Figure 4-1 V.24 Serial I/O Card