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Chapter 4 - Advanced Configuration for your Network Environment
© Polycom, Inc. 2003 107
To select dialing speeds:
1. Enable RS-366 Dialing on the Video Network screen (System
Info > Admin Setup > Video Network > Video Network).
2. Select Dialing Speeds. Choose the appropriate dialing speeds
on the Dialing Speeds screen.
The default dialing speeds are 2 x 64 Kbps, 128 Kbps, 256 Kbps,
384 Kbps, 512 Kbps, and 768 Kbps.
3. To add or remove speeds, scroll through the data rates and
press the SELECT button on the remote control to select your
preferred dialing speeds; a red check appears when a dialing
speed is selected.
The selected dialing speeds apply only to RS-366 calls.
The Nx56 and Nx64 columns list the dialing speeds available for
ISDN calls.
The IPx56 and IPx64 columns list the dialing speeds available
for IP calls.
For non-dialed calls, the call speed is determined by the DCE.
Figure 4-11. Dialing Speeds Screen
Note
A V.35/RS-449/RS-530 system cannot receive an inbound call from
a non-V.35/RS-449/RS-530 system at an n x 56 k common speed.
Common speeds are speeds that are divisible by both 56 and 64.
These include 8 x 56k (448 or 7 x 64), 16 x 56k (896 or 14 x 64), and 24
x 56k (1344 or 21 x 64). Because a V.35/RS-449/RS-530 system
cannot determine how bandwidth is allocated–it only receives the
total clock speed–it does not know how these “common speed”