Westermo IDW-90 AT - Manual (Page 17)

17 6620-3200
! +MS – Modulation Selection
This command parameter controls the manner of operation of the modulation capabili-
ties in the modem. It accepts six sub parameters:
AT!+MS=[[,[,[,[,
[,]]]]]]
Where: Possible , , , , and rate> values are listed below.
!+MS Command Supported Rates
Modulation Possible (, , ()
and ) Rates (bit/s)
Bell 103 B103 300
Bell 212 B212 1 200 Rx/75 Tx or 75 Rx/1 200 Tx
V.21 V21 300
V.22 V22 1 200
V.22 bis V22B 2 400 or 1 200
V.23 V23C 1 200
V.32 V32 9 600 or 4 800
V.32 bis V32B 14 400, 12 000, 9 600, 7 200 or 4 800
V.34 V34 33 600, 31 200, 28 800, 26 400, 24 000, 21 600, 19 200, 16 800,
14 400, 12 000, 9 000, 7 200, 4 800 or 2 400
Defined Values
A string which specifies the preferred modem carrier to use in
originating or answering a connection. values are strings
of up to eight characters, consisting only of numeric digits and
upper case letters.
values for ITU standard modulations take the form:
<1-4 digits>.
A numeric value which enables or disables automatic modulation
negotiation (e.g., ITU-T V.32 bis Annex A or V.8).
0 = Automode disabled.
1 = Automode enabled. (default)
Numeric values which specify the lowest () and
and highest rate at which the modem may establish a receive connection.
May be used to condition distinct limits for the receive direction as
distinct from the transmit direction. Values for this sub parameter
are decimal encoded, in units of bit/s. The possible values for each
modulation are listed in Table 1.
Actual values will be limited to possible values corresponding to
the entered and fall-back as determined during
operation. (default = lowest () and highest (rx_rate>) rate supported by the selected carrier.