Specifications

e-mail: [e-mail] voice: 360.854.9559 fax: [phone]
7
Telco Sentinel Installation and Operation Manual
INSTALLATION
Control Commands
@T – Takes phone line off-hook with loop current check. Will return @T when off
hook and @H when the hang-up occurs.
Response example (off-hook): @T
Response example (hang-up): @H
@H – Will hang-up the phone line and return a @H.
Response example: @H
@I – Takes phone line off-hook without loop current check. It will return a @I on
the serial port when off-hook. This is useful for interfacing dry lines or for non-
phone applications.
Response example: @I
Caller ID data
The Telco Sentinel will output raw caller ID data to the USB Com port when it is
present with an incoming call. All caller ID data is prefaced with the string: @CID
followed by the raw Caller ID data.
NOTE: At least two rings must occur before pick-up for caller ID data to be trans-
mitted and received.
Operation
When the appropriate number of rings are detected by the Telco Sentinel it
will go off-hook and return @T.
To generate DTMF tones from a character string simply send the data string
to the Telco Sentinel’s USB Com port at 9600,8,N,1,None. Up to 256 characters can
be accepted in one string. 50ms after the last character of the string is received the
Telco Sentinel will begin generating DTMF tones from the ASCII string. No car-
riage return is needed to terminate DTMF tone generation commands, only the
above mentioned 50ms pause.
For example to have a DTMF tone burst of 12345 sent, you would send the
ASCII characters 12345 in one packet and 50ms after the 5 is received it will begin
generating the DTMF tone burst.
The comma “,” can be used to generate a one second pause within a tone burst and
the semi-colon “;” can be used to generate a 100ms pause within a tone burst.
For example the ASCII string: 9,,15416872118 will dial 9, wait 2 seconds then dial
541 687 2118.
Any DTMF tones received on the phone line will automatically be decoded and
immediately output over the USB Com port.