0049-2702-XXX Alliance Series Modems – USER MANUAL
08/05/2010
Rev. A
Page 27 of 197
Note –
•
Selecting the V.3x/208 Quick Setup sets the Communication Standard option to
V3x/Bell208.
•
When the Communication Standard option is set to V3x/Bell208, the ALX will not
handshake in V.22bis, Bell 212/103 or V.21/V.22/V.23 mode.
•
All information in the Bell208 section above also applies to V.3x/208 auto-detect mode.
For further information on Bell 208 mode, see Chapter 3 (section titled
Dumb Mode and Bell 208
Operation
).
V.29
This selection is available only on models that include the V.29/V.27/V.26 option. It
configures the ALX for V.29 operation (for data rates of 9600, 7200, or 4800 bps). To select a
specific data rate, use the Speed Limit option to select 9600, 7200 or 4800 bps (only) as the
minimum and/or maximum data rate (DCE RATE). In V.29 mode, the ALX does not support
automatic rate adjustment (fallback) or error correction.
Effect on Speed Limit Option
When you select a communication standard, the Speed Limit option is automatically
adjusted to the minimum and maximum data rates shown in Table 2-1.
This ensures that
the Speed Limit settings are within the appropriate range for the selected standard. After you
select the standard, you can change the Speed Limit settings to narrow the speed range if you
want.
Table 2-1. Effect of Communication Standard
Selection on Speed Limit Setting
Speed Limit setting: data rate, bps
Selected Standard
Minimum
Maximum
AUTO V34
0-300
28.8 K
V34 2400
28.8
K
AUTO V32
0-300
19.2 K
1
V33
12.0 K
14.4 K
Bell208 4800
4800
V3x/Bell208 4800
19.2
K
1
V29 4800
9600
1
ALX V.32/14.4 and V.32/14.4M: 14.4 K; ALX V.32 and V.32M: 9600 bps
Содержание Alliance V.32
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Страница 189: ...0049 2702 XXX Alliance Series Modems USER MANUAL 08 05 2010 Rev A Page 185 of 197 Figure D 1 Connector pin assignments ...