Memotec CX950

4 SERIAL I/O CARDS
3021M100-002
4-13
Separate A and B signals in the V.35 interface indicate differential pair signals.
4.3.5 V.35H Serial I/O Card Power Consumption
Power consumption for the V.35H Serial I/O Card is 1.5 Watts (5.15 BTU/hr).
4.4 X.21 Serial I/O Card
The X.21 I/O Card and its single port supports synchronous transmission at
speeds up to 2,048 Kbps.
4.4.1 X.21 Serial I/O Card Components
Important components on the X.21 Serial I/O Card include:
• edge connector
• port connector
• signal LEDs
• port configuration jumper
*Unassigned 21 not used not used
RI Ring Indicator 125 22 In Out
*Unassigned 23 not used not used
ETXCA External Transmitter Clock (Set A 113-A 24 Out In
*Unassigned 25 not used not used
Table 4-3 Signal Pin-Outs for V.35H Port
V.35H
Signal
Circuit Function ITU-T
DB-25
Pin No.
Signal
DTE
Direction
DCE