52  Concord 4 User Manual 
S3xx (xx = bus unit number) 
S6xx (xx = bus unit number) 
 
Touchtone phone 
Your system may be equipped with an option that allows system operation from a 
touchtone  phone, on or off the premises. This option enables programmed text to 
be spoken through  the phone and/or broadcast through  interior speakers. Except 
for custom word, the voice speaks the text that appears on alphanumeric 
touchpads in the system. 
Phone command prefix 
What distinguishes a call to the panel from any other outgoing or incoming call is 
the use of the phone command prefix: 
•  In  the case of onsite operation, if the phone command prefix is dialed first 
(within 5 seconds of picking up the phone),  the panel waits for a valid access 
code or command. 
•  If the system is being accessed remotely, the phone commands prefix is used 
in conjunction  with the access code. 
The prefix is usually  #, but can be changed to * by the installer. If  your prefix has 
been changed, use * as the first key you press instead of #. 
Accessing the system from offsite 
To access the system from offsite, the system needs to recognize two things 
about the call: 
•  The panel needs to recognize that it should answer the phone. 
•  The panel needs to recognize that the code entered has the authority  to 
operate the system from offsite. 
When using a cellular phone to operate the system, follow  the offsite operating 
instructions.