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Resumen del manual
Black Box Corporation. © 2000. All rights reserved. Black Box Corporation. Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • • e-mail: info@blackbox.com X.25 PAD-2 RESET CH3 ERROR POWER CH2 CH1SYNC DATA The most compact way to connect one or two RS-232 devices to X.25 or Frame Relay. Key Features Provides access to a packet-switched link for one or two RS-232 devices. Local channels are modular, with top async data rate of 115.2 kbps. Link channel is sync and can be either RS-232 (up to 128 kbps) or V.35 (up to 2 Mbps). Can be configured for a large variety of applications with terminal-based menus. Universal power supply. Measures only 0.9"H x 2.1"W x 4.3"D (2.3 x 5.4 x 11 cm). 12/8/2000 #25120 T T he X.25 PAD-2 gives one or two pieces of RS-232 equipment 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: The V.35 version (product code MX320A-HS) uses ITU V.35 for its channel-1 (sync packet-switched) interface, while the RS-232 model (MX325A-HS) uses RS-232/V.24. On all models, channel 1 (hidden from view in the above illustration) is a DB25 female connector, while local async channels 2 and 3 are RJ-45 female connectors. The MX320A-HS comes 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 on channel 1 is 128 kbps for the MX325A-HS or 2 Mbps for the MX320A-HS. Channel 1 is always DTE, but can be configured for either X.25 or Frame Relay. Channels 2 and 3 are always DCE but can be configured for SLIP or X.28. The X.25 PAD-2 comes with a universal 115/230-VAC power supply, an RJ-45 to DB25 patch cable for configuration, and a manual. MX320 models should also come with a DB25 to M/34 patch cable for the WAN-link port. In order to connect the PAD-2 to your equipment, you will also need an RS-232 or V.35 cable for channel 1, plus either (a) another special cable like the configuration cable or (b) one or two twisted- pair cables with modular adapters for channels 2 and 3. Except for a single internal jumper that controls whether or not the X.25 PAD-2 resets itself to factory defaults when it powers up, you’ll configure the PAD-2 with a powerful terminal-based menu system . Just use the included configuration cable to attach the unit to a terminal or a PC running a terminal emulator, and you can tailor the PAD-2 for the requirements of almost any packet-switched application. The configuration firmware is covered in our “Packet Switching Guide”; if you don’t already have a copy, ask for one when you order. The X.25 PAD-2 can also be monitored through its firmware, but it has six top-mounted LEDs that show you basic operating information at a glance: POWER, ERROR, SYNC, and three activity LEDs (one for each channel). Although you should never have to do so, you can press the X.25 PAD-2’s RESET button to reset its internal circuitry and start its power-up self-test. Hook all of your satellite locations— no matter how small they are—into your X.25 or Frame Relay network. Serial POS terminal Mainframe or server X.25 PAD-2 X.25 PAD-2 Frame Relay CSU/DSU CSU/DSU Back-office PC Specifications Compliance: CE (EN55022, EN 50082-1, EN 60950) Class A; FCC Class A, IC Class/classe A Interfaces: Channel 1 (to packet-switched synchronous link): MX320A-HS: ITU V.35 proprietarily pinned on DB25, DTE; MX325A-HS: EIA/TIA RS-232/ ITU V.24/V.28, DTE; Channels 2 and 3 (to local async devices): EIA/TIA RS-232/ ITU V.24/V.28 proprietarily pinned on RJ-45, DCE Protocols: Channel 1: Synchronous 1988 ITU X.25 LAP-B or Frame Relay; for Frame Relay, supports CCLM, LMI, and ANSI PVC management protocols, as well as ANSI T1.606, T1.617 Annex D, T1.618, and ITU Q.922 Annex A; Channels 2 and 3: Asynchronous SLIP or X.28 (user-selectable) Clock Source: Channel 1: Internal or external for receive and transmit paths, user-selectable Data Rate: Channel 1: MX320A-HS: Up to 2 Mbps, user-selectable; MX325A-HS: Up to 128 kbps, user-selectable; Channels 2 and 3: 75 bps to 115.2 kbps, user-selectable Data Format: Channels 2 and 3: 5, 6, 7, or 8 data bits; even, odd, mark, space, or no parity; 1, 1.5, or 2 stop bits; user-selectable Flow Control: Channels 2 and 3: Hardware (DTR/CTS) or software (X-ON/X-OFF), user-selectable Other Characteristics for Channels 2 and 3: Log-on messages: Herald and bulletin, user-definable; Command modes: ITU X.28 (with proprietary extensions) and X.29; Terminal handling: Enhanced, beyond the requirements of ITU X.3 Packet Size: ...