Black Box MX320A-HS, Руководство пользователя

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X.25 PAD-2
3.4 Connecting Cables and Power
The X.25 PAD-2 has three ports designated as
channels 1, 2, and 3. When you hold the PAD-2 so you
can read the labeling on its top panel, channel 1 (the
DB25 female connector) is on the left-hand side of the
unit and channels 2 and 3 (the RJ-45 female connectors)
are on the right.
NOTES
For pinouts of these connectors, refer to the Packet
Switching Guide .
All cables attached to the X.25 PAD-2 should be shielded
in order to comply with FCC rules. The X.25 PAD-2 and its
data interfaces will work well even if the cables are not
shielded, but some radio interference might occur.
3.4.1 C
HANNEL
1
Channel 1 is the “main link” connector that supports
synchronous packet-switched data. On MX325 models,
its DB25 connector is pinned as an RS-232 DTE, like a
terminal or the larger COM ports on a PC. To attach it
to a sync RS-232 DCE (sync modem, SME, etc.) with a
DB25 female port, use a 25-pin straight-through-pinned
shielded RS-232 cable such as product code
EBN25C-MM. To connect to other types of sync RS-232
devices/ports, please call Black Box Technical Support.