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Chapter 2 - Technical Information
© Polycom, Inc. 31
V.35/RS-449/RS-530 Network Interface Module
The following paragraphs provide technical information about the
V.35/RS-449/RS-530 network interface module available with the
ViewStation EX, ViewStation FX, and VS4000.
The system’s V.35/RS-449/RS-530 network interface module is not
interchangeable with the previous V.35 network interface module.
The new module uses HD-44F connectors for ports 1 and 2, and uses
a keyed RJ-45 connector for the serial link to the back panel of the
ViewStation FX or VS4000. The cable used with the
V.35/RS-449/RS-530 network interface module is the same as is
used for the PRI network interface module. It is shown in Figure 2-5.
An HD-44M to DB-25F adapter cable is available to connect existing
ViewStation DB-25 interface module V.35 network cables.
“Common speeds” are divisible by both 56 and 64. The
V.35/RS-449/RS-530 network interface module supports the
following common speeds:
❑ 448 Kbps
❑ 896 Kbps
❑ 1344 Kbps (E1 only)
Indicators on the V.35/RS-449/RS-530 Network Interface Module
The following tables describe the behavior of the indicator lamps on
the V.35/RS-449/RS-530 network interface module.
Table 2-19. V.35/RS-449/RS-530 Peripheral Side Indicators
Indication Meaning
Amber LED and
green LED flash once
Power-up test
Amber LED off No communication between endpoint and
network interface module
Amber LED on Communication established between endpoint
and network interface module
Amber LED and
green LED on
Communication established with network