Table 8 Default Configuration (by Parameter)
Parameter
Default
State
Pause for comma in dial string
S8=2
2 seconds
Rings before disconnect
S*0=0
Disabled
Store phone number
⇐
&Z
No number
¶ Use the indicated AT command to change the parameter.
Table 9 shows the configurable parameters and their default settings listed by command code.
Table 9 Default Configuration (by Code)
Parameter
Default
State
Echo on/off
⇐
E1
On
Message display
⇐
M2
Messages are displayed until answer (with line
testing)
Message display on/off
⇐
Q
Enabled
Message
⇐
V3
T-311 word result codes are returned
Call progress monitoring
⇐
All detectors enabled
Store phone number
⇐
&Z
No number
Password enable/enable
⇐
*C
Disabled
Password definition
⇐
*W
No password entered
Auto answer
S0=0
Disabled
Carriage return character
S3=13
ASCII 13
Line feed character
S4=10
ASCII 10
Backspace character
S5=08
ASCII 08
Pause before dialing
S6=2
2 seconds
Call completion timeout
S7=30
30 seconds
Pause for comma in dial string
S8=2
2 seconds
Call disconnect timeout
S10=0
Disabled
DTMF dialing rate
S11=70
70 mS
Parity information
S13=8
8-bit data word, parity off
Rings before disconnect
S*0=0
Disabled
Baud rate
S*4=2
1200 baud
Use the indicated AT command to change the parameter.
RS-232-C Communications Link
The T-311 is linked to the computer via a DB-9 (9-pin) EIA RS-232-C asynchronous serial interface. In
the T-311 implementation of this interface, four signals are used to exchange data with the computer:
TX (Transmitted data from computer to T-311)
(Received data from T-311 to computer)
(Data Terminal Ready; signal from computer to T-311 indicating that computer is ready to
transfer and receive data)
RI (Ring Indicator; signal from T-311 indicating that ringing is being detected)
Note:
By RS-232-C convention, the T-311 is classified as “” and the computer as “DTE”. Signals are
always designated with reference to the DTE device.
Reference Manual
Chapter 10: Configuration
40-400-00045, Rev.
B
Page 43