I was looking for information on their status messages and found this:
http://ift.tt/1AaY2jB
Attachment A
Trunking Features and Definitions
Trunking is a computer-controlled radio system, in which individual radio channels are grouped together as a common resource for all system users. Each radio request to place a call on the system is directed to an unused channel by the main computer. Progress and assignment of call resources is transparent to the radio user.
“Talk group” is often used synonymously with “channel”. However, a “channel” is actually a specific radio frequency (radio channel), whereas a “talk group” is actually a computer-generated partition. A channel always operates on a specific radio channel, whereas a talk group can be assigned to any radio channel used by the system. The underlying channel-changing process for talk group activity is transparent to the user.
A “mode” commonly refers to the displayed or selector switch positions on a subscriber radio. The key point to remember is that a “mode” can represent a collection of parameters. For instance, mode 1 on the radio might represent a conventional simplex “channel”, with a certain receive / transmit squelch code combination (PL), a certain transmitter power level, and a modulation type… such as analog or P25 digital. Therefore, a “channel” might only represent a small portion of the functions that make up the contents of a “mode”.
For Blackstone County trunked talk groups and conventional channels are grouped by function as follows:
Dispatch (D1) talk groups: For dispatching to or from responding field units, no unit-to-unit side bars allowed.
OPS or TAC talk groups: For individual agency operational primary radio traffic; a key agency working talk group. Law agencies opted to use the term “OPS”, whereas Fire agencies opted to use the term “TAC”.
ADM or Administrative talk groups: Non operational secondary radio traffic, and for intra-agency unit-to-unit meetings. ADM talk groups are generally for exclusive use of the particular agency, and are not included in the programming lists for other agencies. However, Dispatch is capable of operating on all ADM talk groups if needed.
LE or law enforcement shared talk groups or channels: Shared trunked talkgroups and/or conventional repeater or simplex channels for interagency law OPS radio traffic.
Incident INC / Command talk groups: Interagency and multiple agency responses and incidents. For everyday incidents, but becomes a command and coordination talkgroup for large scale incidents.
Technical Services and Test talk groups: For maintenance and testing and system manager operations
Conventional Repeaters and simplex channels: local city, local or adjacent county, regional, and statewide radio channels for simplex (talk around) and/or repeated (repeater) incident traffic, interoperability, and/or Mutual Aid purposes.
A “zone” represents a geographical region covered by a Smart Zone system. However, when referring to programming a subscriber radio, a “zone” usually represents a group or “bank” of up to 16 talk groups.
When a radio successfully registers itself on the system and becomes associated with a trunked radio site, it becomes affiliated (active) on the system.
“Aliases” are friendly alphanumeric names given to radios or units in place of radio identification numbers. This can also refer to any cross-representation of data to a more understandable written form. Portable aliases can be identified by operator proper names or badge numbers, since radios are normally assigned to individuals. Mobile-mounted radios will be identified by vehicular unit numbers, especially since different operators share the same vehicle across multiple shifts and possible locations.
Trunking features and functionality that may be utilized by the response agencies covered by this plan include:
Call Alert: Dispatch or unit to unit alert notification with aliases. Any intra-agency call alert is notification to both units to meet on their assigned ADMIN talk group. Any inter-agency call alert is notification to both units to meet on the CALERT talk group.
Status-messaging: Field unit radios send pre-defined status messages to dispatch console, which will appear on the operator activity logs. Dispatchers will still have to manually input/update status/message information into CAD for each incident. Most system subscriber radios include status-messaging capability. However, only selected mobile units include a simplified one button status/message control head.
Typical status-message aliases:
Enroute
Arrived on Scene
Clear
Available
Emergency alarm & call: Tactical voice channel with silent and/or Dispatch acknowledgement of individual unit alarms. A user who generates an alarm will stay on the current talk group (tactical), and upon pushing the radio PTT, the initiating unit will take control of that talk group for 30 seconds. Law Enforcement agencies opted for silent alarm, meaning that the initiating radio makes no visible indication that an alarm has occurred. Fire agencies opted for audible alarm with dispatch console acknowledgement.
All alarms must be acknowledged by any dispatch operator positions capable of selecting or monitoring applicable subscriber units talk groups.
Roaming: Site to site automatic registration and affiliation with preferences. Each talk group has been assigned system sites resource preferences, based upon expected areas of operations and agency requirements. Default values for signal strength thresholds and filter delays will be used.
System wide call routing, user registration, and talk group priority levels: The Smart Zone computer overlay controls system wide routing and assignment of all voice channel resources, including data processing for Call Alert, Emergency Alarm functions, and all system wide Trunking functions. Each talk group type can have a different priority level, such that if the system were busy, call resource assignment is based upon a pre-assigned priority level, of up to 10 levels. For example, emergency calls are handled as priority 1, Multi-group calls as priority 2, dispatch talk group calls as priority 3, tactical talk group calls as priority 5, administrative talk group calls as priority 7, testing / maintenance talk group calls as priority 9, and unassigned talk groups as priority 10.
Wide area and site Trunking: Wide area Smart Zone Trunking is the normal mode of operation. In case of critical microwave link failures or main system computer failure, the overall trunked system will revert to “site Trunking” mode. In this mode, all of the system remote sites remain in Trunking mode, but they become standalone in operation. User radios already registered onto a site will normally stay there. However, subscriber radios are capable of being manually forced to specific system remote sites, but applicable Smart Zone feature sets are then compromised; this feature should be reserved only for critical communications needs in the event of back up to site Trunking mode.
Fail-soft: This is the lowest level of system back-up capability, for which system radios will automatically revert to pre-determined site and channel assignments and maintain conventional system communications with common users and agencies on trunked system repeater channels. Keep in mind that the hierarchy of internal programming for trunked radios is to stay trunked; such that if a Fail-soft situation occurs, the radio will want to hunt for a site that is still in Trunking mode.
Multi-group calls: This is a specialized talk group for Dispatch or authorized subscriber radios to initiate group calls to entire agencies at the same time. Multi-group Calls are prioritized on an “All start” basis, meaning that the call won’t begin until a path is open to all active receiving units without ruthlessly pre-empting a transmission in progress. Four Multi-group Call talk groups have been identified initially:
MGCSAR = All Search & Rescue;
MGCHFD = All Helena Fire;
MGCRF = All Rural Fire;
MGCGSD = All Dept. of Administration
Private calls: Unit to unit private conversation capability; this feature disallowed until system resources grow to handle the additional traffic load.
Secure voice: Both console and individual units have encryption capabilities; some field units are also capable of multiple key codes. Common key codes have been grouped and assigned as follows:
Key 1 = All field units;
Key 2 = Unit Leaders;
Key 3 = Command Units;
Key 4 = EMS;
Key 5 = Non Public Safety
Selective radio inhibit: This is a Radio Dispatch Management (RDM) feature which cancels transmit and receive functions of a radio unit over the air (assuming the radio is turned on and in range of the system.) In particular, a stolen radio can be disabled and rendered useless.
Interoperability/patching: This summarizes interfacing of resources via trunked-to-trunked and trunked-to-conventional patching, and can utilize permanent patching via a Console Electronics Bank (CEB), dispatch operator initiated temporary patches, and/or external hardware patching devices such as LYRIX.
http://ift.tt/1AaY2jB
System Air traffic and historical reports records: This feature stores system operational data and can organize it and report system traffic and utilization in a number of useful ways.
System RF resources: No system radio channel resources are used if no user radios are affiliated to operate on a talk group. Only sites with active units affiliated on them will carry traffic. No system remote sites will be considered off limits to trunked user radios.
Trunked and Conventional Scan: A scanning radio normally can only receive trunked talk groups that are affiliated at the same site it is affiliated at. Conventional scan can receive any channel in its list. Priority monitor allows a scanning radio to switch to the priority talk group/channel even if scan halts for normal traffic. However, if a radio scans both conventional channels and trunked talk groups together, the priority scan/monitor feature is non-functional. Units will not de-register from the trunked system if conventional channels are included in the scan list.
To prevent user radios from accidentally talking back to a just-scanned channel or talk group, the hang time hold timer is set to zero seconds (0s).
http://ift.tt/1AaY2jB
Attachment A
Trunking Features and Definitions
Trunking is a computer-controlled radio system, in which individual radio channels are grouped together as a common resource for all system users. Each radio request to place a call on the system is directed to an unused channel by the main computer. Progress and assignment of call resources is transparent to the radio user.
“Talk group” is often used synonymously with “channel”. However, a “channel” is actually a specific radio frequency (radio channel), whereas a “talk group” is actually a computer-generated partition. A channel always operates on a specific radio channel, whereas a talk group can be assigned to any radio channel used by the system. The underlying channel-changing process for talk group activity is transparent to the user.
A “mode” commonly refers to the displayed or selector switch positions on a subscriber radio. The key point to remember is that a “mode” can represent a collection of parameters. For instance, mode 1 on the radio might represent a conventional simplex “channel”, with a certain receive / transmit squelch code combination (PL), a certain transmitter power level, and a modulation type… such as analog or P25 digital. Therefore, a “channel” might only represent a small portion of the functions that make up the contents of a “mode”.
For Blackstone County trunked talk groups and conventional channels are grouped by function as follows:
Dispatch (D1) talk groups: For dispatching to or from responding field units, no unit-to-unit side bars allowed.
OPS or TAC talk groups: For individual agency operational primary radio traffic; a key agency working talk group. Law agencies opted to use the term “OPS”, whereas Fire agencies opted to use the term “TAC”.
ADM or Administrative talk groups: Non operational secondary radio traffic, and for intra-agency unit-to-unit meetings. ADM talk groups are generally for exclusive use of the particular agency, and are not included in the programming lists for other agencies. However, Dispatch is capable of operating on all ADM talk groups if needed.
LE or law enforcement shared talk groups or channels: Shared trunked talkgroups and/or conventional repeater or simplex channels for interagency law OPS radio traffic.
Incident INC / Command talk groups: Interagency and multiple agency responses and incidents. For everyday incidents, but becomes a command and coordination talkgroup for large scale incidents.
Technical Services and Test talk groups: For maintenance and testing and system manager operations
Conventional Repeaters and simplex channels: local city, local or adjacent county, regional, and statewide radio channels for simplex (talk around) and/or repeated (repeater) incident traffic, interoperability, and/or Mutual Aid purposes.
A “zone” represents a geographical region covered by a Smart Zone system. However, when referring to programming a subscriber radio, a “zone” usually represents a group or “bank” of up to 16 talk groups.
When a radio successfully registers itself on the system and becomes associated with a trunked radio site, it becomes affiliated (active) on the system.
“Aliases” are friendly alphanumeric names given to radios or units in place of radio identification numbers. This can also refer to any cross-representation of data to a more understandable written form. Portable aliases can be identified by operator proper names or badge numbers, since radios are normally assigned to individuals. Mobile-mounted radios will be identified by vehicular unit numbers, especially since different operators share the same vehicle across multiple shifts and possible locations.
Trunking features and functionality that may be utilized by the response agencies covered by this plan include:
Call Alert: Dispatch or unit to unit alert notification with aliases. Any intra-agency call alert is notification to both units to meet on their assigned ADMIN talk group. Any inter-agency call alert is notification to both units to meet on the CALERT talk group.
Status-messaging: Field unit radios send pre-defined status messages to dispatch console, which will appear on the operator activity logs. Dispatchers will still have to manually input/update status/message information into CAD for each incident. Most system subscriber radios include status-messaging capability. However, only selected mobile units include a simplified one button status/message control head.
Typical status-message aliases:
Enroute
Arrived on Scene
Clear
Available
Emergency alarm & call: Tactical voice channel with silent and/or Dispatch acknowledgement of individual unit alarms. A user who generates an alarm will stay on the current talk group (tactical), and upon pushing the radio PTT, the initiating unit will take control of that talk group for 30 seconds. Law Enforcement agencies opted for silent alarm, meaning that the initiating radio makes no visible indication that an alarm has occurred. Fire agencies opted for audible alarm with dispatch console acknowledgement.
All alarms must be acknowledged by any dispatch operator positions capable of selecting or monitoring applicable subscriber units talk groups.
Roaming: Site to site automatic registration and affiliation with preferences. Each talk group has been assigned system sites resource preferences, based upon expected areas of operations and agency requirements. Default values for signal strength thresholds and filter delays will be used.
System wide call routing, user registration, and talk group priority levels: The Smart Zone computer overlay controls system wide routing and assignment of all voice channel resources, including data processing for Call Alert, Emergency Alarm functions, and all system wide Trunking functions. Each talk group type can have a different priority level, such that if the system were busy, call resource assignment is based upon a pre-assigned priority level, of up to 10 levels. For example, emergency calls are handled as priority 1, Multi-group calls as priority 2, dispatch talk group calls as priority 3, tactical talk group calls as priority 5, administrative talk group calls as priority 7, testing / maintenance talk group calls as priority 9, and unassigned talk groups as priority 10.
Wide area and site Trunking: Wide area Smart Zone Trunking is the normal mode of operation. In case of critical microwave link failures or main system computer failure, the overall trunked system will revert to “site Trunking” mode. In this mode, all of the system remote sites remain in Trunking mode, but they become standalone in operation. User radios already registered onto a site will normally stay there. However, subscriber radios are capable of being manually forced to specific system remote sites, but applicable Smart Zone feature sets are then compromised; this feature should be reserved only for critical communications needs in the event of back up to site Trunking mode.
Fail-soft: This is the lowest level of system back-up capability, for which system radios will automatically revert to pre-determined site and channel assignments and maintain conventional system communications with common users and agencies on trunked system repeater channels. Keep in mind that the hierarchy of internal programming for trunked radios is to stay trunked; such that if a Fail-soft situation occurs, the radio will want to hunt for a site that is still in Trunking mode.
Multi-group calls: This is a specialized talk group for Dispatch or authorized subscriber radios to initiate group calls to entire agencies at the same time. Multi-group Calls are prioritized on an “All start” basis, meaning that the call won’t begin until a path is open to all active receiving units without ruthlessly pre-empting a transmission in progress. Four Multi-group Call talk groups have been identified initially:
MGCSAR = All Search & Rescue;
MGCHFD = All Helena Fire;
MGCRF = All Rural Fire;
MGCGSD = All Dept. of Administration
Private calls: Unit to unit private conversation capability; this feature disallowed until system resources grow to handle the additional traffic load.
Secure voice: Both console and individual units have encryption capabilities; some field units are also capable of multiple key codes. Common key codes have been grouped and assigned as follows:
Key 1 = All field units;
Key 2 = Unit Leaders;
Key 3 = Command Units;
Key 4 = EMS;
Key 5 = Non Public Safety
Selective radio inhibit: This is a Radio Dispatch Management (RDM) feature which cancels transmit and receive functions of a radio unit over the air (assuming the radio is turned on and in range of the system.) In particular, a stolen radio can be disabled and rendered useless.
Interoperability/patching: This summarizes interfacing of resources via trunked-to-trunked and trunked-to-conventional patching, and can utilize permanent patching via a Console Electronics Bank (CEB), dispatch operator initiated temporary patches, and/or external hardware patching devices such as LYRIX.
http://ift.tt/1AaY2jB
System Air traffic and historical reports records: This feature stores system operational data and can organize it and report system traffic and utilization in a number of useful ways.
System RF resources: No system radio channel resources are used if no user radios are affiliated to operate on a talk group. Only sites with active units affiliated on them will carry traffic. No system remote sites will be considered off limits to trunked user radios.
Trunked and Conventional Scan: A scanning radio normally can only receive trunked talk groups that are affiliated at the same site it is affiliated at. Conventional scan can receive any channel in its list. Priority monitor allows a scanning radio to switch to the priority talk group/channel even if scan halts for normal traffic. However, if a radio scans both conventional channels and trunked talk groups together, the priority scan/monitor feature is non-functional. Units will not de-register from the trunked system if conventional channels are included in the scan list.
To prevent user radios from accidentally talking back to a just-scanned channel or talk group, the hang time hold timer is set to zero seconds (0s).
Blackstone County Interoperability
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