Multi-Tech Systems MTS2SA-T - Manual (Page 106)

Chapter 10
− Modem Mode AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A) 106
Command: +MR Modulation Reporting Control (Not available in V.22bis)
Values: 0, 1, 2
Default: 0
Description:
This extended-format numeric parameter controls whether or not the extended-format
+MCR: and +MRR: intermediate result codes are transmitted from the
modem to the DTE. If enabled, +MCR: and +MRR: intermediate result codes
represent the current (negotiated or renegotiated) modulation and 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).
+MR0 Disables reporting of modulation connection (+MCR: and +MRR: are not transmitted).
+MR1 Enables reporting of modulation connection (+MCR: and +MRR: are transmitted
with tx rate, rx rate).
+MR2 Enables reporting of modulation connection (+MCR: and +MRR: are transmitted
with rx rate only).
Reporting Current or Selected Values
Command: +MR?
Reporting Supported Range of Parameter Values
Command: +MR=?
Report Syntax +MCR
Response: +MCR:
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
V90 For V.90
K56 For K56flex
Report Syntax +MRR
Response: +MRR: ,
Decimal transmit rate in bits/s.
Decimal receive rate in bits/s.
Example: +MRR: 28800, 48000