SRT Gateway by CEF Documentation
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Using the Gateway · Chapter 10

Key features in detail

The device offers stream parameter configuration, multiple sources, HLS output, alerts and network settings.

1

Advanced input configuration

Pressing Edit on the SRT / HLS input opens the configuration window. Besides the address, it lets you tune SRT protocol parameters:

  • Passphrase — the encryption key, if the SRT signal is protected.
  • Latency — the buffer in milliseconds (2000 by default). More latency = more tolerance to an unstable network.
  • Max Bandwidth — an optional bandwidth limit.
  • Additional SRT Parameters — parameters such as streamid and others used by the SRT protocol.

The same window configures the failover URL, with its own parameters.

Input configuration window
Input configuration window.
2

Individual Sources

Besides the main MPTS-type SRT input, the device supports up to 20 «slots» as inputs for SRT or HLS sources. They let you use the full Gateway capacity to deliver up to 20 UDP or HLS outputs. You can configure all your streams in this section, without using the main Input Stream.

The Individual Sources button opens the slot list. Slots used by the main input appear locked (you can scroll down to slot 20):

Available slot list
Slot list — the locked ones belong to the main input.

Press Edit on a free slot to assign it a source:

Configuring an individual slot
Configuring a slot source.
3

HLS output

Each active slot can also be published as HLS within your local network — useful to watch it in browsers or players that do not support UDP. Each slot's «HLS» button shows its address:

A slot's HLS address
A slot's local HLS address.
4

Alerts

Each slot can be monitored automatically. The «Alerts» button opens the conditions that trigger an email notice:

  • Signal loss — no data is received.
  • Black screen — more than 90% of the frame is black.
  • Pixelation — sustained pixelation for more than 10 seconds.

Notices are sent to the email addresses provided.

A slot's alerts window
Alert conditions and notification emails.
5

Network configuration

The Network button opens the device network configuration, in two sections:

  • WAN (internet) — the internet connection over the eth0 port. It can be DHCP (automatic) or Static (fixed address).
  • LAN (multicast delivery) — the local distribution network over the eth1 port: fixed IP address and mask.
Network configuration window
Network configuration — WAN in DHCP and LAN unassigned.
WAN configured as Static
Example of WAN in Static mode — IP, mask, gateway and DNS.
WAN Static and LAN applied
Applied configuration — fixed WAN and LAN with eth1 active.
Change the WAN carefully

If a new WAN address leaves the device unreachable, the system reverts to the previous one after a minute. Even so, change these details carefully.

6

Device information

Further down the panel, two sections report the status in real time.

Network — connection quality: latency (RTT), jitter, bandwidth usage and inbound and outbound traffic.

Network metrics
Network section — connection quality.

System — device data: identifier, installed version, temperature, memory, disk, IP address and name.

System information
System section — device data.
7

Fleet devices

If you have several SRT Gateways on the same network, the Network Devices section shows them all: their status, address, uptime and multicast group. The device you are viewing from is marked «Self».

Fleet devices
Network Devices — the SRT Gateway units on the network.
Done

You have seen all the device functions. Chapter 11 gathers solutions to the most common problems.

SRT Gateway by CEF · CEF Technology © 2026