Motorola P Series Selling Manual page 31

Detailed Features/Benefits Description
When relevant activity is discovered on one of the scan list channels, the scanning process is
temporarily suspended and the radio is said to be in "Landed Scan Mode". When the scan has
"landed" on a channel, and the squelch conditions are met, the speaker unmutes and the radio user
hears the conversation on that channel.
When the conversation ends, the radio waits for further activity for a programmable period of time
(the duration of the "Scan Hang Timer"). If no further activity is discovered, the scan process is
resumed and the radio switches back into Active Scan Mode.
Scan TalkBack enables the radio user to join in with a conversation discovered during scanning. The
radio user has until the Scan Hang Timer expires to reply to a voice communication on the relevant
landed channel.
An alternative to replying on the landed channel is to specify a Designated Tx Channel using the
CPS. To help understand how this works, consider the following situation:
A radio user initiates scanning by pressing one of the programmable side buttons and the
radio lands on channel 2, where a relevant conversation is taking place.
The radio user wishes to join the conversation and pushes the PTT button. Channel 4 has
been set as the Designated Tx Channel and hence the radio user begins transmitting on
channel 4 (which would typically be the radio user's "home" or "emergency" channel)
To simplify the radio operation for your customer's staff, AutoScan can be programmed on a per-
channel basis. This feature automatically activates Scanning when the radio user switches to a
channel with AutoScan enabled.
To further enhance the scanning process, it is possible to nominate the Þrst channel in the scan list
as a Priority Scan Channel. Typically, the Priority Scan Channel is an "emergency" or "supervisor"
channel used for urgent or important communications.
If a Priority Channel has been appointed, it is checked for activity after each other member channel
is checked. ie the order in which the radio checks each Scan List channel for activity is:
Scan List Channel 1
Scan List Channel 2
Scan List Channel 1
Scan List Channel 3
Scan List Channel 1
Scan List Channel 4
Scan List Channel 1
etc
Priority Scanning ensures that your customer's important calls are received.
The Priority Scan Channel is regularly monitored, even when the radio has landed on a non-priority
channel. ie, when activity has been discovered on a non-priority channel and the conversation is
being listened to, the radio continually switches to the priority channel to check for activity.
This continual checking does, however, cause momentary breaks in the audio being received from
the non-priority channel. The time interval between checks on the Priority Channel is determined
during programming by the "Priority Sample Time"
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