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If a failure occurs in the SMARTNET/SmartZone or P25 Trunked system so that it cannot 
be used, the system directs the radio to automatically enter the failsoft mode. When in this 
mode, “FAILSOFT” and the alias of the selected channel are alternately displayed. A 
failsoft tone may also be heard, depending on how the repeater is programmed.

When in the failsoft mode, operation is in the conventional mode on the preprogrammed 
failsoft channel (a different failsoft channel can be programmed on each talk group). If a 
transmission is attempted before a failsoft channel is located, a continuous tones sounds 
until the PTT switch is released. When the radio system returns to normal operation, this is 
automatically detected and normal operation resumes.

Scanning on a SMARTNET/Smartzone or P25 Trunked system is called Priority Monitor 
Scan. The following are unique features of this type of scanning. For general scanning 
information applicable to all operating modes, refer to Sections 4.11 and 4.12.

• Scanning is turned on and off by the SCAN option switch. Talk groups (channels) can 

be programmed so that scanning automatically starts whenever the talk group is selected 
(Autoscan).

• When responding to calls in the scan mode, the programming of the Talkback Scan 

parameter determines if a response always occurs on the talk group of the call (Active 
Group) or the Selected Group if they are different. Transmissions at other times always 
occur on the selected talk group.

• Up to 256 scan lists or the number that fit in available memory can be programmed. 

Each list can include up to 256 talk groups from the same system, one of which can be a 
priority group as described in the next section.

• If the SCN ED option key is programmed, scan lists are user programmable (see 

Section 6.11.2). In addition, nuisance channels can be temporarily deleted as described 
in Section 4.11.5.

• Each talk group is programmed to select one of the programmed scan lists or “No List” 

(scanning is disabled). If scanning is enabled and the selected channel does not permit 
scanning, it is automatically enabled again when a channel is selected that permits 
scanning.

• The selected scan list can be temporarily changed if the Scan (List) Select option switch 

is programmed. The procedure is described in Section 6.11.2.

• In addition to calls on channels in the scan list, pages, private/unit calls, and telephone 

calls are received while scanning. Private and telephone calls are not interrupted by 
priority messages.