Broadcast / AoIP

LWRP Command Reference

Livewire Routing Protocol command reference — TCP port 93, VER, SRC, DST, GPIO, LPSTAT and connection notes

LWRP — Livewire Routing Protocol

Plain-text TCP protocol for controlling Axia/Livewire devices — routing sources/destinations and reading/writing GPIO. Keep the session open; do not reconnect per command.

Connection Details

Protocol:  TCP
Port:      93
Session:   Persistent — keep the connection open, do not reconnect per command
Auth:      LOGIN <password>   (only if a password is set on the device)

# Quick test with netcat
nc <device-ip> 93

# Or PuTTY: Connection Type = Raw, Port = 93

Command Reference

Command	Syntax	Description
Version / Caps	VER	Returns firmware version, source count, destination count, GPIO count
List Sources	SRC	Returns all source slots with current channel assignments and labels
Set Source	SRC <n> LIWF:<channel>	Assign source slot n to Livewire channel number — makes the device a stream originator
List Destinations	DST	Returns all destination slots and their current channel assignments
Set Destination	DST <n> LIWF:<channel>	Route destination slot n to receive the given Livewire channel
Read GPIs	GPI	Returns state of all GPI (input) pins
Read GPOs	GPO	Returns state of all GPO (output) pins
Set GPO	GPO <n> STAT:<0\|1>	Set GPO pin n — 0 = low/active, 1 = high/inactive (inverted logic)
Hardware Status	LPSTAT	Extended device status — link state, PSU health (xNode devices)
Subscribe Source	ADD SRC <n>	Subscribe to real-time change notifications for source slot n
Subscribe Dest	ADD DST <n>	Subscribe to real-time change notifications for destination slot n

Example Session

# Connect
nc 192.168.1.100 93

# Device responds with version banner
VER <LWRP:4.0.12 devn:"Studio A xNode" ntwk:"Studio Network" nsrc:8 ndst:8 ngpi:4 ngpo:4>

# List all destinations
DST

# Route destination 1 to channel 1001
DST 1 LIWF:1001

# Set GPO 1 active (low)
GPO 1 STAT:0

# Subscribe to destination changes
ADD DST 0

GPIO Logic Reference

Livewire GPIO uses inverted logic in LWRP — the opposite of what you might expect from standard digital I/O. This is consistent with traditional broadcast tally and relay conventions.

LWRP State	Voltage Level	Meaning	Typical Use
STAT:0	Low (0V)	Active / Closed	Tally ON, relay closed, event triggered
STAT:1	High (3.3V / 5V)	Inactive / Open	Tally OFF, relay open, idle state

GPIO states are polled or subscribed via LWRP. Use ADD GPI 0 to subscribe to all GPI change events in real time rather than polling with GPI.

Livewire GPIO can be routed over the network — a GPI on one device can trigger a GPO on any other device using the GPIO routing matrix in PathfinderPC or the Axia web UI.

Implementation Notes

Plain-text and testable. LWRP is a simple ASCII protocol. You can interact with any Livewire device using nc <ip> 93 or PuTTY in raw mode — no SDK required. Great for scripting, automation, and diagnostics.

Device generation matters. LWRP behavior varies between xNodes, Livewire Drivers, QoR nodes, and legacy Element surfaces. Command support, response formatting, and GPIO counts differ. Always test on non-critical equipment first.

Limit concurrent connections. Making too many simultaneous LWRP connections to a single device can cause instability or missed responses. Limit to one or two persistent connections per device in production environments.

Pathfinder and automation. For large-scale LWRP automation, consider Telos Alliance PathfinderPC, which provides a higher-level API, event routing, and scripting — sitting on top of LWRP so you don't have to manage raw connections at scale.