User`s manual

TroubleshootingTroubleshooting
Vlll
29
Vlll
28
L0 Off or low speaker volume
L1 Low volume
L2 Medium volume (default)
L3 High volume
AT Commands Affecting ITU-T V.90 Operation
There are 3 S-registers which support K56flex, V.90, and V.34 connections. S38 sets the
maximum downstream speed that the modem attempts to connect. To disable V.90, set
S38 to 0. The S37 register is used to control the upstream V.34 rate. Use the S109 reg-
ister to select between K56flex and V.90 protocols.
S37 Dial Line Rate (default 0)
S37 = 0 maximum modem speed (default)
S37 = 1 reserved
S37 = 2 1200 bits/s and 75 bits/s
S37 = 3 300 bits/s
S37 = 4 reserved
S37 = 5 1200 bits/s
S37 = 6 2400 bits/s
S37 = 7 4800 bits/s
S37 = 8 7200 bits/s
S37 = 9 9600 bits/s
S37 = 10 12000 bits/s
S37 = 11 14400 bits/s
S37 = 12 16800 bits/s
S37 = 13 19200 bits/s
S37 = 14 21600 bits/s
S37 = 15 24000 bits/s
S37 = 16 26400 bits/s
S37 = 17 28800 bits/s
S37 = 18 31200 bits/s
S37 = 19 33600 bits/s
S38 56K Dial Line Rate (default 1)
S38 = 0 Disable all 56K connections
S38 = 1 autorate - maximum achievable connection (default)
S38 = 2 29333 bits / s
S38 = 3 30666 bits / s
S38 = 4 32000 bits / s
S38 = 5 33333 bits / s
S38 = 6 34666 bits / s
S38 = 7 36000 bits / s
S38 = 8 37333 bits / s
S38 = 9 38666 bits / s
S38 = 10 40000 bits / s
S38 = 12 42666 bits / s
S38 = 13 44000 bits / s
S38 = 14 45333 bits / s
S38 = 15 46666 bits / s
S38 = 16 48000 bits / s
S38 = 17 49333 bits / s
S38 = 18 50666 bits / s
S38 = 19 52000 bits / s
S38 = 20 53333 bits / s