SmartTrunk Systems SmarTrunk II, System Overview, Page: 42 / 57

System Overview
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Q. Can the SmarTrunk system operate in a co-channel environment?
Yes. In fact, this is one of the key advantages of the SmarTrunk II protocol. Due to
the de-centralized system control concept, the system utilizes a distributed control
method which is available on any channel in the system. This eliminates the need
for a dedicated control channel to manage the system. The mobile radios perform
the required “channel monitor prior to transmit” responsibility which is performed
automatically by the SmarTrunk logic boards. The SmarTrunk channel monitor
function may be programmed in the radio to detect either Carrier or CTCSS Tone
as the channel busy status.
Q. How many users per channel can the SmarTrunk system
accommodate?
There are many factors which determine the practical number of users per channel
in any trunking system, including: 1) The type of operation on the system, i.e.,
dispatch, mobile to mobile, mobile telephone; 2) The level of service desired; and
3) The number of channels in the system. For example, based on our Traffic
Analysis Study and input from our system operators, the following loading figures
may apply for a typical five channel system:
System: ..................................................... Five SmarTrunk II channels.
Grade of Service: ....................................... 10% (One in ten call attempts will
receive a busy)
Approximate number of radios per channel:
Operation: ................................................. 100% mobile telephone = 25 to 40
Operation: ................................................. 50% mobile telephone,
50% dispatch = 50 to 75
Operation: ................................................. 100% dispatch = 100
Q. Who provides product warranty for SmarTrunk equipment?
SmarTrunk products are warranted by SmarTrunk Systems, Inc., against defects in
materials and workmanship for a period of two years from the date of shipment.
This warranty policy is honored by the SmarTrunk factory. Radios and other system
equipment are warranted by the respective manufacturers.
Q. Is SmarTrunk factory training available?
Yes, we schedule factory technical training seminars ata various times. Contact our
sales department for specific information, or refer to our Internet Web Page for the
current seminar schedule (www.smartrunk.com).
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