48 AT commands
The following table shows the values for bearer service selection.
Value
0
1
2
Bearer Service
data (default)
3.1kHz audio speech
Result Codes
OK Appears when the selected value is supported.
ERROR Appears when the selected value is unrecognized or is not supported.
Channel Speed Control
The Channel Speed Control Command
%A4=value
instructs the CTA 500dm to use the speciÞed data rate for outgoing calls dialed over the
The following table shows the values for data rate selection.
Value
0
1
Data rate
64 kbit/s
56 kbit/s (default)
Result Codes
OK Appears when the selected value is supported.
ERROR Appears when the selected value is unrecognized or is not supported.
Incoming Call Control
Data calls can be answered over any of the ISDN bearer services. The data rate can be either 56 kbit/s or 64 kbit/s. However, the data rate over either of the voice bearer services must be set to the same rate as the receiving end, since this cannot be indicated in call
CTA 500dm On Line Guide | P0873832 Issue 05 |