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eBay US ROBOTICS TOTAL CONTROL QUAD V.34 ANALOG/DIGITAL MODEM CIRCUIT CARD P/N 1.012.0342-B, 10120342B LED DISPLAY US ROBOTICS 1.012.0342-B, 10120342B ANALOG/DIGITAL MODEM CIRCUIT CARD 3COM 3Com is a leading global provider of enterprise and small-business networking solutions that help organizations achieve their business and networking objectives. This V.34 fax software supports high speed facsimile transfers up to 33,600 bps on switched telephone networks and on point-to-point 2-wire leased telephone-type circuits. Our V.34 fax software provides a real-time implementation with full support for multichannel applications. VOCAL’s V.34 fax software is optimized for DSPs and conventional processors from TI, ADI, Intel, ARM and other leading vendors. The software libraries are modular and can be executed as a single task under a variety of operating systems or standalone with its own microkernel. V.34 fax software may be licensed standalone, with a library or a complete design with custom solutions available. V.34 Fax Features Fully compliant Group 3 Facsimile Support Full and half duplex modes Primary data channel supports 14 data rates from 2400 to 33600 bps, in increments of 2400 bps Control channel rates are 1200 and 2400 bps Optimized for high performance on leading edge DSP architectures Multichannel implementation Multi-tasking environment compatible V.34 Fax ITU-T V.34 defines the modulation methods and operating sequences for a high speed fax modem used on General Switched Telephone Networks (GSTNs) and on point-to-point 2-wire leased telephone-type circuits. V.34 fax uses state-of-the-art line probing analysis to automatically determine maximum channel capacity. It also supports MSE fallback/fallforward threshold control to adjust the tradeoff between higher data channel rates and symbol error rates. V.34 channel separation is accomplished using echo cancellation techniques. V.34 fax uses Quadrature Amplitude Modulation (QAM) with synchronous line transmission to support selectable mandatory rates of 2400, 3000, and 3200 symbols/s and optional rates of 2743, 2800 and 3429 symbols/s. Asymmetric symbol and data rates are also supported. Negotiation and training sequences at startup establish the data rate. V.34 modem control channel rates are 1200 and 2400 bps, with an optional auxiliary channel with a synchronous data signalling rate of 200 bit/s. Trellis coding for all signaling rates and shell mapping permit satisfactory performance even over noisy channels. Adaptive techniques are used to achieve close to the maximum data signaling rate that a V.34 channel can support on each connection. Command Set Controller Using the Command Set Controller (CSC) in VOCAL’s T.30 library or with VOCAL’s facsimile service Class 1 Command Set(EIA-578 and T.31), application software developers can control all of the V.34 fax modulations and data streams . The T.30 library could in turn be controlled by VOCAL’s facsimile service Class 2 Command Sets T.32 (Class 2.1), EIA-592 (Class 2.0), or industry standard (Class 2). With Class 1, most of the protocol is executed in software, with the advantage that any changes don’t require hardware modifications. This is in contrast to Class 2, where image processing is handled by the modem. The line interface for the V.34 fax may be an analog front end (codec and DAA) or a digital interface such as T1/E1, Switched 56, and ISDN. The upper end of this software offers a direct binary and HDLC interface. Configurations DAA interface using linear codec at 7.2 kHz, 8.0 kHz or 16.0 kHz sample rate Direct interface to 8.0 kHz PCM data stream (A-law or μ-law) North American and International Dialing/Telephony dialing functions available DTMF detection during voice modes available Facsimile protocol layer (T.30 with ECM/BFT) available Facsimile service class 1 command sets (T.31 and EIA-578) available Facsimile service class 2 command sets (T.32, EIA-592 and industry standard class 2) available. Use with VOCAL’s Command Set Controller (CSC) and T.30 library. System can be combined with other Group 3 fax modulations (V.17/V.29/V.27ter/V.21 channel 2 3Com 1.012.0342-B Total Control Modem Circuit Card Condition: New Codes and Manufacturer Data: Brand — 3Com Your satisfaction is the Greatest Recognition we could have, So we ask if you can Please take a moment to give us a Feedback on your recent order All PRODUCTS and Equipments are serviced and inspected by our WRI Certified Technicians. Items shipped complete. Call US for additional information. Please check us out. Webster Repair Inc. is located in Norfolk, Virginia and has over 25 years experience in Commercial Janitorial Equipment Sales and Repair. Please click this link, , to see our complete line of in stock new and used Equipments and Supplies. If you’re looking for a specific machine or item that you don’t see in our store please give us a call so we can quote you a fair price to have it ordered and shipped to you. Shipping fees reflect actual cost to Seller. Local Pickup is available. In cases where we have more than one of the same item available the unit shipped may not be the exact one pictured. However, all are in like condition. Tag:003786
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