Configurations | The Vanguard 650 Series currently comes in four hardware configurations: | |
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| • 651 - Data only without internal modem or battery. This model comes with |
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| 2 serial ports and one ISDN U interface port. |
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| • 652 |
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| (or without) battery backup, an internal modem, and is equipped with 2 serial |
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| ports, 2 POTS ports, and one ISDN U interface port. |
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| • 653 - Data only without internal modem or battery. This model comes with |
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| 2 serial ports and one ISDN S/T Interface port. |
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| • 654 - Data and Plain Old Telephone System (POTS). This model comes with |
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| (or without) battery backup, an internal modem, and is equipped with 2 serial |
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| ports, 2 POTS ports, and one ISDN S/T interface port. |
What Is the 650? |
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Unlike a traditional ISDN Terminal Adaptor, the Vanguard 650 Series is known as an | ||
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| ISDN PAD (Packet Assembler/Disassembler). Although it has the same functionality |
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| as standard TA’s for POTS support, it handles data differently. The 650 product has |
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| an internal X.25 switching PAD, and can route data traffic across the ISDN D packet |
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| channel. As a result, multiple applications can be supported on a single ISDN basic |
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| rate (2B+D) link while freeing up the two B channels for true voice, modem, or fax |
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| calls. |
Supported |
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The Vanguard 650 Series of products provides full support for protocols such as | ||
Protocols | SDLC, Bisync, Burroughs Poll Select, 2260, ALC, and 3201. (See the Software | |
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| Advisory Notice for the currently shipping software release for a full list of supported |
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| protocols and features.) This product also provides support for local termination |
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| (Poll Spoofing), and switching. |
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Getting Started |