3021M100-002
4-1
4
SERIAL I/O CARDS
There are four types of Serial I/O cards which mount on the motherboard in any of
slots 1-4, and in slots 5-8 if the Serial Expansion Module (SEM) is installed. They
enable the CX950 to exchange data with a variety of external serial devices. Other
serial devices include the Multi I/O, discussed in Chapter 5, and the Universal I/O,
discussed in Chapter 6.
NOTE:
The digital interface boards must be configured as DTE to connect to a PTO-
provided service (X.25 PSS or Digital Leased Line). Interconnecting cables
used between the Memotec interface and the PTO provided network must
present a DTE interface to the network.
The interconnection cables supplied by Memotec provide the correct connector
type and pin-out assignments required by a PTO-provided network port in Europe.
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