Black Box MX320A-HS, Руководство пользователя

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CHAPTER 2: Introduction
2. Introduction
The X.25 PAD-2 provides easy, cost-effective access to a
packet-switching network or device in a wide range of
applications. For example, it can serve as:
• A PAD (Packet Assembler/Disassembler);
• An access unit for private or public X.25 networks;
• An access server for a mainframe’s X.25 ports;
• An async switch and contention manager; or
• A FRAD (Frame Relay Access Device).
It can also be used to run asynchronous data over Frame
Relay, either in X.25 packets or directly (in SLIP
protocol).
Two versions are available, in “-A” (115-VAC) and
“-AE” (230-VAC) models: The MX320A-HS and
MX320AE-HS models use V.35 for their channel-1 (sync
packet-switched) interface, while the MX325A-HS and
MX325AE-HS models use RS-232. On all models,
channel 1 is a DB25 female connector, while local async
channels 2 and 3 are RJ-45 female connectors, but the
MX320 models come with a short cable you can attach
to the WAN port to patch it to a V.35-standard M/34
female connector. The X.25 PAD-2’s maximum data rate