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Resumen del manual
Black Box Corporation. CSU/DSU MS Configur ConfigurConfigure and dial quickly e and dial quicklye and dial quickly, ,, conveniently convenientlyconveniently, ,, with the fr with the frwith the front-panel contr ont-panel contront-panel controls. ols.ols. FEATURES • Supports up to seven speeds—2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps. • DTE service rate-matching allows slower DTE devices to communicate over higher-speed digital line. • CSU/DSU dialer gives you convenient, fingertip menu control. Typical DDS configuration. CSU/DSU MS CSU/DSU MS (MT132V-R2) (MT132V-R2) 56-kbps DDS line 56-kbps DDS line Multiplexors Central Telephone Office DTE (Pittsburgh) OVERVIEW The cost of Digital Data Service (DDS) lines has been steadily decreasing and is now comparable to the cost of leased analog lines. But DDS has two distinct advantages over analog service: data moves at higher speeds, allowing transmission of larger volumes; and data error rates are greatly reduced. If you are making the decision to switch from analog to DDS, or if you want to expand the capabilities you now have with DDS, consider our CSU/DSU. Typically, a CSU/DSU replaces the modem in a network and supports either sync or async data formats at speeds of 2.4, 4.8, 9.6, 19.2, and 56 kbps in pointto- point or multipoint configurations (see the diagram above). Our CSU/DSU MS supports the traditional five speeds, but also gives you the additional speeds of 38.4 and 64 kbps. If you need to transmit larger volumes of data, the higher speeds of the CSU/DSU MS are the solution. The CSU/DSU MS also supports a secondary async channel that enables you to piggyback data up to 2400 bps (this service must also be supported by your local telephone company). DTE (Boston) Making the move from analog to digital doesn’t mean replacing all your DTE devices with “fast” equipment designed for digital. The CSU/DSU MS has a DTE rate-matching feature that allows your slower DTEs to communicate over higher- speed digital lines (56-kbps only). The CSU/DSU has a wide receiver range, from 0 to -45 dBm at 56-kbps loop rate, so you can transmit data over loops up to 18,000 feet long via 26 AWG wire. TYPICAL APPLICATIONS • Routing/bridging. • SNA/SDLC systems. • High-speed asynchronous systems. • Frame-Relay networks. • Statistical multiplexor links. 724-746-5500 blackbox.com 2of 3 #11457 3 of 3 TECH SPECS Diagnostics — DTE, DTE/loop, DTE with test pattern, loop only, test pattern DTE Rates — 2.4, 4.8, 9.6, 19.2 kbps sync or async; 38.4, 56, or 64 kbps sync User Controls — (16) front-panel buttons: Enter, Up-Arrow, Down- Arrow, Cancel, 0–9, #, * Interface — V.35 or RS-232 sync or async Connectors — (2) DB25 female, (1) M/34 female, (1) RJ-48C Indicators — (7) LEDs: RS, CS, TD, RD, CD, ALRM, TST Power — 115 VAC, 60 Hz, 8 watts Size — 2.3"H x 8.8"W x 10.3"D (5.8 x 22.4 x 26.2 cm) Weight — 3 lb. (1.4 kg) 1/30/2007 #11457 724-746-5500 blackbox.com . The CSU/DSU MS . RJ-45 line cable . User’s manual WHAT‘S INCLUDED Item Code CSU/DSU MS MT132V-R2 • Digital Data Service (DDS) is a wide-bandwidth, private leased line that transmits data in digital, rather than analog, format. DDS lines are 4-wire circuits (Transmit pair, Receive pair) linked by special repeaters and separated from conventional analog lines. They can provide a higher data-transmission rate and maintain a higher level of data integrity than analog trans- mission service. • DDS is a nationwide service of AT&T® that allows inter- connection and transport of data for the regional Bell operating companies. The telephone companies provide a DDS-compatible service within their region and provide the local loop service to DDS customers. • An ISU (Integrated Service Unit) replaces the modem in a network. A combination of the CSU (Channel Service Unit) and the DSU (Data Service Unit), it is usually called a CSU/DSU. • The CSU/DSU MS provides the standard DDS rates of 2.4, 4.8, 9.6, 19.2 kbps sync or async, and 56 kbps sync. It also provides DDS rates of 38.4 and 64 kbps. • The CSU/DSU MS supports DTE rate adaption to 2.4, 4.8, 9.6, 19.2, and 56 kbps at 56-kbps loop speed. Secondary channel operation is supported at all speeds except 64 kbps, with terminal rate...
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