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ESO/GL Channels

ESO/GL channels on the NSW Public Safety Network are shared liaison talkgroups used for inter-agency coordination. They are designated for communication between Emergency Service Organisations (ESO) and Government Liaison (GL) entities during multi-agency operations or major incidents.

 

Talkgroup ID Description
10000 Government Liaison 1
10001 Government Liaison 2
10002 Government Liaison 3
10003 Government Liaison 4
10004 Government Liaison 5
10005 Government Liaison 6
10006 Government Liaison 7
10007 Government Liaison 8
10008 Government Liaison 9
10009 Government Liaison 10
10010 Emergency Liaison 1
10011 Emergency Liaison 2
10012 Emergency Liaison 3
10013 Emergency Liaison 4
10014 Emergency Liaison 5
10015 Emergency Liaison 6
10016 Emergency Liaison 7
10017 Emergency Liaison 8
10018 Emergency Liaison 9
10019 Emergency Liaison 10 - NSW Police Liaison Channel
10020 Emergency Liaison 11
10021 Emergency Liaison 12
10022 Emergency Liaison 13
10023 Emergency Liaison 14
10024 Emergency Liaison 15
10025 Emergency Liaison 16
10026 Emergency Liaison 17
10027 Emergency Liaison 18
10028 Emergency Liaison 19
10029 Emergency Liaison 20

 

What Are ESO and GL Channels?

        • ESO = Emergency Services Organisation Liaison
        • GL = Government Liaison Talk groups
        • These are shared, open-access talk groups on the NSW PSN (formerly GRN), designed to facilitate communication between:
        • NSW Police
        • Fire and Rescue NSW
        • NSW Ambulance
        • SES
        • NPWS (National Parks & Wildlife Services)
        • Local councils
        • Transport and infrastructure agencies

 

 

Operational Context

ESO/GL channels are commonly used for:

        • Bushfire coordination between RFS, NPWS, and FRNSW
        • Flood and storm response involving SES, councils, and utilities
        • Major public events like New Year’s Eve, Vivid Sydney, or protests
        • Transport incidents requiring joint traffic, police, and rescue input

 

These channels are especially useful when agencies operate on separate encrypted talk groups but need a common, open channel for tactical coordination.

 

These channels are interoperable, meaning they are accessible to multiple agencies and are often activated during large-scale emergencies, natural disasters, or planned events requiring joint operations.

 

Scanner Monitoring

 

        • ESO/GL channels are popular among scanner users because they are typically unencrypted.
        • You can monitor them using SDR tools (e.g. Unitrunker, SDRTrunk) or digital scanners programmed with PSN frequencies.
        • Metadata such as Radio IDs (RIDs) and Talkgroup IDs (TGIDs) is visible, even if voice traffic is encrypted elsewhere.

 

 

Government Liaison Channel

These talkgroups are part of the Shared Liaison Groups category on the NSW Public Safety Network (formerly GRN).

They are used across the state and are not tied to any specific agency.