Total Control MP/16, Operator'S Manual

Page: 93 / 182

Cellular 4-15
Disable ETC During Originate Mode
AT Command:
S66.7=1
MIB Object : mdmCeDbNoEtcDis
This setting disables ETC when originating calls, yet allows it to
negotiate ETC in answer mode. If the modem is used to place
outgoing calls to non-cellular modems, use this setting to disable
V.42ETC during originate mode.
Settings:
S66.7=0 Originate ETC
S66.7=1 Disable ETC during
originate
Set Maximum Link Rate
AT Command:
S64
MIB Object : mdmCeDceBitraLim
Prevents modem from connecting or falling forward to link rates
higher than that specified. Lowering the maximum link rate to
9600 bps can provide more stability for cellular calls under adverse
conditions. However, higher throughput is sacrificed for calls over
stronger cellular links that can support higher link rates.
Settings: S64=0 Modem selects maximum
link rate.
Register 64, settings 4-8
To set maximum rate, see the following table. Selecting values
not listed is invalid and leaves the setting unchanged.
Setting Max Rate
S64=4 4800 bps
S64=5 7200 bps
S64=6 9600 bps
S64=7 12000 bps
S64=8 14400 bps
Set ETC Transmit Level
AT Command: S65
MIB Object
: mdmCeDceTxLev
A reduced transmit level is required for data transfer across
cellular links. When ETC is established for a call, the modem
automatically reduces its transmit (TX) level to the value specified
by this parameter.
With the default setting, the modem sets the TX level according to
ETC specifications based on whether it is transmitting over T1 or