Vanguard Managed Solutions 650 - Manual (Page 16)

1-2 Getting Started
Configurations The Vanguard 650 Series currently comes in four hardware configurations:
• 651 - Data only without internal modem or battery. This model comes with
2 serial ports and one ISDN U interface port.
• 652 -Data and Plain Old Telephone System (POTS). This model comes with
(or without) battery backup, an internal modem, and is equipped with 2 serial
ports, 2 POTS ports, and one ISDN U interface port.
• 653 - Data only without internal modem or battery. This model comes with
2 serial ports and one ISDN S/T Interface port.
• 654 - Data and Plain Old Telephone System (POTS). This model comes with
(or without) battery backup, an internal modem, and is equipped with 2 serial
ports, 2 POTS ports, and one ISDN S/T interface port.
What Is the 650? Unlike a traditional ISDN Terminal Adaptor, the Vanguard 650 Series is known as an
ISDN PAD (Packet Assembler/Disassembler). Although it has the same functionality
as standard TA’s for POTS support, it handles data differently. The 650 product has
an internal X.25 switching PAD, and can route data traffic across the ISDN D packet
channel. As a result, multiple applications can be supported on a single ISDN basic
rate (2B+D) link while freeing up the two B channels for true voice, modem, or fax
calls.
Supported
Protocols The Vanguard 650 Series of products provides full support for protocols such as
SDLC, Bisync, Burroughs Poll Select, 2260, ALC, and 3201. (See the Software
Advisory Notice for the currently shipping software release for a full list of supported
protocols and features.) This product also provides support for local termination
(Poll Spoofing), and switching.