Chapter 5: Menu reference 
Advisor Advanced ATSx500A(-IP) Installation and Programming Manual  269 
9.3.n.8.2 Omit 1st call 
 
Use this option when sharing a telephone line with other equipment (for example, 
a fax or an answering machine) that automatically answers incoming rings.  
If set to Yes, the panel hangs up after a number of incoming rings programmed in 
“9.3.n.8.1 Ring count” on page 268, and answers immediately to the second 
incoming call received within 30 seconds after the first one. 
If set to No, the panel answers after a number of incoming rings programmed in 
“9.3.n.8.1 Ring count”. 
9.3.n.9 Encryption 
 
If the Encryption option is set to Yes, the communication is encrypted with AES 
algorithm. 
The encryption key is set using menu “9.4.3 Encryption key” on page 284. 
Note: IP connection is always encrypted. USB communication does not use 
encryption. 
PSTN specific options 
9.3.n.3 Line fault delay 
 
Line fault delay defines the time period after which the PSTN line fault is reported 
to the central station. If the fault restores before this time expires, no fault is 
reported. 
The allowed range is 0 to 255 s. 
9.3.n.4 Transm path 
 
The Transmission path option is a read-only field that identifies a communication 
method used for this transmission path. 
9.3.n.5 Dial tone 
 
The Dial tone menu allows you to choose an appropriate dial tone standard for 
PSTN paths.