Diamond SupraExpress 56e Manual page 31

<mod> <mod>
Numeric Verbose
56 K56flex
64 B103
69 B212
1 See optional <automode>, <minimum rate>, and <maximum rate>
parameters.
2 For V.23, originating modes transmit at 75 bps and receive at 1200 bps;
answering modes transmit at 1200 bps and receive at 75 bps. The rate is
always specified as 1200 bps.
The modem accepts either numeric or verbose selections, but reports only in the verbose mode.
The <automode> Parameter
The <automode> (automatic modulation negotiation) parameter is an optional numeric value
that enables or disables automatic modulation negotiation. There are modulations for which
automatic negotiation is not available, such as Bell 212.
The default value, 1, enables automode. This allows the modem to "fall back" to other protocols
within the specified <minimum rate> and <maximum rate> range for which standard automode
procedures exist. For example, failed V.34 connection attempts can automode to other protocols, but
a Bell 103 connection attempt cannot automode to V.23.
The following table displays the available automode options:
<automode> Option Selected
0 Automode disabled
1 Automode enabled using V.8 or
V.32bis Annex A
Setting <automode>
If you set <automode> to 1, and you are using the default settings, your modem attempts to
connect at the highest possible rate and protocol using either V.8 or V.32bis Annex A. If your modem
cannot make a connection at that speed, it automatically negotiates the rate downward until a
connection is made. For example, if you issue the command AT+MS=V32B,1,1200,14400 the
modem starts negotiating the rate downward from V.32bis 14400 bps if a connection is not made.
If you set <automode> to zero, and if a V.32bis connection cannot be made, the modem will not try
a V.22bis connection. For example, if you give the command AT+MS= V32,0,1200,4800 the
modem will try all speeds of V.32, but will not try the next lower protocol (i.e. V.22bis 2400 bps.)
Protocol Possible
Rates (bps)
56000, 54000, 52000, 50000, 48000, 46000,
44000, 42000, 40000, 38000, 36000, 34000, 32000
Bell 103 300
Bell 212 1200
1
Notes
Default
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