1. LARICS ISSI/CSSI 10/18/17 Ted Pao, IT Specialist, LARICS Project Lead
Scott England, Telecom Engineer, LARICS/LACoFD

2. LARICS Overview Who Are we?
Ted Pao – Responsible for County of Los Angeles Sheriff Department Radio System, LA-RICS LTE and LMR Systems.
Scott England – Responsible for County of Los Angeles Fire Department Radio and Dispatch Systems.
LA-RICS – Los Angeles Regional Interoperable Communications System. Provide LTE and LMR for public safety agencies in L.A. County.

3. LMR and LTE P25 UHF Digital Trunking Voice Radio System (DVTRS)
P Digital Trunking Voice Radio System (DVTRS)
Analog Conventional Voice Radio System (ACVRS) UHF 22 Simulcast radio Channels dedicated to LACoFD. 42 channels for regional use.
Los Angeles Regional Tactical Communications System (LARTCS)
Narrowband Mobile Data Network (NMDN)
Public Safety Broadband Network (PSBN) Private LTE Data System

4. Digital Trunking Voice Radio System (DVTRS)
P25 Phase 1
P25 Phase 2
Transcoder between Phase 1 and Phase 2.
UHF and 700 MHz integrated at the core to allow seamless operation for the end users.
The DTVRS coverage design covers the following seven coverage zones:
North Desert, Foothills, CA-14 Corridor, Santa Monica Mountains, Basin & Catalina Island

5. ISSI/CSSI Overview ISSI Needs: Connect to other P25 systems
ICI – P25 regional system
City of Los Angeles
LAPD
LA World Airport (LAWA)
LA Port Police (LAPP)
RPC – Region 5 Systems
San Bernardino County
Riverside County
Orange County
San Diego County
More….
County of Los Angeles
CSSI Needs:
Connect to Console Systems
LA County Fire – 53 console positions
LA County Sheriff – 82 console positions
Other agencies – TBD console positions

6. LARICS ISSI/CSSI Licensing / Mesh Network
ISSI to Mutual Aid Public Safety Radio interface serving Million Citizens.
Mesh Network for SoCal
Redundant ISSI feeds
CSSI functionality for consoles

7. LARICS ISSI/CSSI Phase 1
LARICS Primary Core at FCCF
LARICS Backup Core at PLM
ISSI Connection to ICI
ISSI Connection to LACO
ISSI Connections to LAPD
CSSI Connections to P25 consoles

8. LARICS ISSI/CSSI Phase 2
ISSI to San Bernardino
ISSI to Riverside
ISSI to Orange
ISSI to San Diego

9. LARICS ISSI/CSSI Mutual Aid Channels
TG Coordinated APCO/NPSTC
Agreed to Talk Groups
Agreed to Profile
Agreed to System IDs
Agreed to Radio IDs
Agreed to Functionality
Agreed to Meta Data
RTG-TAC-1

10. Meta Data Over ISSI and CSSI Overview
Data extraction for CAD, mapping, and other purposes.
Radio ID
Radio Alias
Emergency Trigger Activation and De-activation
GPS coordinates

11. Radio ID (RID) and Alias
The Radio Console interfaces with the P25 radios system via the CSSI. The Radio Console system manages the radio alias to RID information.
The CAD interfaces to the new P25 Radio System via the Customer Gateway network (CGN), thus providing Automatic Identification Decoder (AID) information to the CAD, which identifies which each radio PTT.
All radios connected to other agency P25 systems pass their RID and alias information through the ISSI connection. This information is then passed to the CSSI to the Radio Console and CGN to the CAD.
CAD and Radio Console associate all GPS information with each PTT to the RID/alias, which is displayed on a tactical mapping system

12. Radio (Emergency Trigger)
The Radio Console interfaces with the voice radio emergency button on the P25 radios system via the CSSI. The Radio Console system alerts dispatchers of the emergency button activation both visually and audibly. The Radio Console system associates the activating unit with the alias, alerts the responsible dispatchers, alerts all associated units on the incident talk group and plots the location of the activating unit on the tactical map display. The Dispatch Console can clear and / or deactivate the Emergency button activation.
The CAD integrates with the P25 Radio and Mobile Data Devices (MDD) emergency button function with the incidents assigned radios and alias via the CGN and the ISSI for all unit on other agencies systems. The CAD system can identify/associate the activating unit, alert the responsible dispatchers of all associated Radio units alias on the incident and and plot the location of the activating unit on the tactical map display.
Control of the emergency notification (initiated by a Radio and/or MMD depressing the emergency key) will be administratively configurable via the Radio Console via the CSSI.

13. Meta Data over the ISSI
When on another agencies P25 Radio System and connected via the ISSI, all PTT GPS information needs to pass through the ISSI and back to our Dispatch Center via the ISSI for the tactical map to display their Emergency Trigger activation location.
When on another agencies P25 Radio System and connected via the ISSI, all PTT alias information needs to pass through the ISSI and back to our Dispatch Center via the ISSI for the tactical map to display their Emergency Trigger activation location.