Synxcom SM9234D, User Manual

Page: 89 / 216

AT Commands
Page 89
+MR - Modulation Reporting Control
This extended-format numeric parameter controls whether or not the extended-
format +MCR:<carrier> and +MRR:<rate> intermediate result codes are
transmitted from the modem to the DTE. If enabled, +MCR:<carrier> and
+MRR:<rate> intermediate result codes represent the current (negotiated or
renegotiated) modulation <carrier> and <rate> that are transmitted at the point
during connect negotiation (handshaking) at which the modem has determined
which modulation and rate will be used, i.e., before any Error Control or Data
Compression reports are transmitted, and before any final result code (e.g.,
CONNECT) is transmitted.
S95, bit 2 is reset to 0 for +MR=0 and is set to a 1 for +MR=1 or +MR=2. The
more recent setting of +MR or S95, bit 2, and the W command setting, determines
modulation result code reporting (see S95 Parameter and W Command).
Syntax +MR=[<value>]
Defined Value
<value> A decimal number corresponding to the selected option:
0 Disables reporting of modulation connection (+MCR:
and +MRR: are not transmitted). (Default.)
1 Enables reporting of modulation connection (+MCR:
and +MRR: are transmitted with tx rate, rx rate).
2 Enables reporting of modulation connection (+MCR:
and +MRR: are transmitted with rx rate only).
Reporting Current or Selected Values
Command:
+MR?
Response: +MR: <current value>
Example: +MR: 0 For default setting
Reporting Supported Range of Parameter Values
Command:
+MR=?
Response: +MR: (<value>range)
Example: +MR: (0-2)
+MCR: Report Syntax
Response: +MCR: <carrier>
<carrier> Alphanumeric code corresponding to the reported carrier.
Defined values are:
B103 For Bell 103
B212 For Bell 212
V21 For V.21
V22 For V.22
V22B For V.22bis
V23C For V.23
V32 For V.32
V32B For V.32bis
V34 For V.34
K56 For K56flex
V90 For V.90
V92 For V.92