Matrix ETERNITY NE System Manual 87
Hardware Settings
1. Click (+) Hardware Settings to expand options. 
2. Set AC Impedance for the SLT port to match the AC impedance of the telephone instrument connected to 
it. Default: 
 However, the ETERNITY allows you to connect instruments with AC impedance other than 600. 
3. Set the Flash Timer (msec) as per your requirement. 
Flash is generally required to enable the SLT user to use features like Hold, Transfer, etc. Flash can be 
dialed using the Flash key (if available) on the SLT or by tapping the hook switch. 
Flash is breaking of Loop Current for a specific time period. ETERNITY considers that an extension has 
dialed flash, if it detects breaking of the loop current for duration of the Flash Timer. The Flash timer is 
configurable. The range of this timer is from 83 (minimum) to 999 (maximum) milliseconds. By default, 
Flash Timer is set to 600 milliseconds.
You can program the Flash Timer according to the Flash Timer supported by the SLT instrument. If the 
SLT instrument breaks the loop current for more than the programmed Flash Timer, the system will 
consider it as a call disconnection.
4. Select the appropriate CLIP Type according to the CLIP Type supported by the telephone instrument 
connected to the SLT port. 
ETERNITY NE supports 3 signaling protocols for CLI on the SLT port: DTMF, FSK-V.23, and FSK-
BellCore. Default: DTMF.
Select None to disable CLIP on the SLT port.
5. Define the Minimum Caller ID Digits according to number of digits supported by the telephone instrument 
connected to the SLT port.