User's Manual
Table Of Contents
- Safety Information
- General
- Controls And Display
- General Operation
- Radio Wide Features
- Conventional Features
- 5.1 Monitoring Before Transmitting
- 5.2 Monitor Mode
- 5.3 Busy Channel Lockout
- 5.4 Call Guard Squelch
- 5.5 Penalty Timer
- 5.6 Conversation Timer
- 5.7 Repeater Talk-Around
- 5.8 Displaying Transmit/Receive Frequency
- 5.9 Emergency Alarm and Call
- 5.10 Conventional Mode Scanning
- 5.11 Standard Conventional Calls
- 5.12 DTMF/ANI Signaling
- 5.13 Single Tone Encoder
- 5.14 MDC1200 Compatibility
- 5.15 Project 25 Mode Features
- 5.16 Keypad Programming
- SMARTNET/SmartZone/P25 Trunked Features
- 6.1 Analog and Digital Operation
- 6.2 Viewing Unit ID
- 6.3 Standard Group Calls
- 6.4 Private (Unit-To-Unit) Calls
- 6.5 Telephone Calls
- 6.6 Call Alert
- 6.7 Messaging
- 6.8 Sending Status Conditions
- 6.9 Emergency Alarm and Call
- 6.10 Failsoft Operation
- 6.11 SMARTNET/SmartZone/P25 Trunked Scanning Features
- 6.12 Dynamic Regrouping
- 6.13 SmartZone and P25 Trunking Unique Features
- 6.13.1 Busy Override
- 6.13.2 Site Trunking
- 6.13.3 Determining Current Site and Searching For a New Site
- 6.13.4 Locking/Unlocking a Site
- 6.13.5 ZoneFail Site Lock
- 6.13.6 P25 Wide Area Scan
- 6.13.7 Normal P25 and SmartZone Control Channel Hunt
- 6.13.8 Talkgroup Steering Via System Access Permissions
- 6.13.9 P25 Wide Area Scan
- Miscellaneous
- Determining Available Options
- 5300 ES Mobile Firmware Versions
- Password Description
- Secure Communication (Encryption)
Draft
December 2006 5300 ES Series Mobile Radio Operating Manual -17
6.13.8 Talkgroup Steering Via System Access Permissions
In order to use system channel resources more efficiently, some system operators are
using system access permissions to steer certain talkgroups to particular sites. For
example, a police department may be allowed to use only Site 1, and a public works
department may be allowed to use only Site 2.
The problem with this operation is that every time a different talk group is selected, the
access permission may be different and a different site may need to be accessed. This
could result, in a worst case, in a delay of up to 30 seconds in finding a new site. This
could occur if there are no valid sites for the new talk group in the dynamic site list.
6.13.9 P25 Wide Area Scan
A feature called Wide Area Scan can be programmed to minimize the problem just
outlined. This feature is programmed on the Talk Group list screen selected on the P25
System screen. When Wide Area Scan is selected, talk group site preferences are no
longer available. However, System Site Preference lists can still be used. The Wide Area
Scan feature functions as follows:
1 Assume TG1 is selected. If it is the first time this talk group is selected, normal
searching for a control channel occurs according to the hunt methods
previously described.
2 When another talk group is selected, the active valid site for TG1 is stored in EEPROM
memory.
3 The next time TG1 is selected, the following procedure is performed before performing
the normal hunt methods previously described.
a The last valid site ID and its receive and transmit channel numbers are loaded from
EEPROM memory.
b The dynamic site list is checked to see if any newer receive/transmit channel
information is available for the last site ID.
c The best receive/transmit information is used and the radio checks to see if this
control channel is available.
The result of the preceding operation is that the radio has a reasonable chance of finding a
valid site, usually on the first try. This greatly reduces access time, even on systems which
have highly restricted talk group based access.