Gateway-4 codec streams stereo and mono audio with ViA codec

Gateway 4 Codec Announced

Leading codec manufacturer Tieline has announced the addition of the new Gateway 4 IP audio codec to its range of professional IP audio codecs.

The Gateway 4 is a powerful DSP-based 1RU IP codec designed for live remote broadcasting applications, as well as STL or SSL links. The Gateway 4 also includes support for AES67, ST 2110-30, AES3 and analog I/O as standard, and an optional WheatNet-IP card.

Gateway 4 Replaces Merlin and Genie STL Codecs

The Gateway 4 supersedes and replaces the popular Merlin and Genie STL audio codecs. It supports 4 full-duplex audio channels* in 1RU to expand channel density by one when compared with these codecs. The Gateway 4 provides two stereo connections, or one stereo and two mono connections, or up to 4 mono full duplex connections. The Gateway 4 also supports multiple unicasting to up to 20 endpoints and multicasting.

The Tieline Gateway 4 codec


“Tieline’s new generation Gateway codecs deliver best-in-class DSP-based reliability and performance for mission critical broadcast streaming applications,” said Charlie Gawley, VP Sales APAC/EMEA. “The Gateway 4 is designed for solutions requiring between 2 and 4 audio streaming channels, plus advanced redundancy features and remote configuration and control. Customers with higher channel requirements will gravitate towards the Gateway-8/16 multi-channel codec.”

Gateway-4 Codec Delivers 4 Mono Connections
Gateway 4 Codec Delivers 4 Mono Connections


For larger networks, the Gateway 4 is ideal for transmitter sites, remote trucks or rack-mounted remote kits. For affiliates and smaller stations it can be used to transport studio-to-studio links, or a stereo studio-to-transmitter link signal plus another stereo connection, or dual mono connections for remotes.

Interoperability and Redundancy

The Gateway 4 seamlessly integrates with all Tieline IP codecs and delivers hitless packet switching using SmartStream PLUS redundant streaming, plus bandwidth aggregation using Fuse-IP technologies over internet connections. It features dual internal power supplies, dual LAN ports and dual AoIP ports. An optional Gateway Euro ISDN module can also be purchased for use with the Gateway 4. This allows the codec to integrate with legacy ISDN network infrastructure for primary or backup connections as required.

Gateway-4 codec connects with backup IP and ISDN connections

Its feature-rich and compact design is interoperable with all Tieline IP codecs and compatible over SIP with all EBU N/ACIP Tech 3326 and 3368 compliant codecs and devices.
Gateway is configurable through an embedded HTML5 Toolbox Web-GUI interface and is also fully controllable using Tieline’s Cloud Codec Controller. Tieline expects the codec to ship towards the end of Q1, 2021.

For more information visit or contact Tieline sales:

  • For USA, Canada & Latin America contact:
  • For Australia and International:

* The Gateway 4 codec supports 4 channels only and is not upgradable to support more channels.

Notice About Discontinued Merlin and Genie Codecs
The Gateway 4 supersedes Tieline’s Merlin and Genie STL codecs and the Gateway-8 and Gateway-16 codecs supersede the Merlin PLUS and Genie Distribution codecs. Production of the Merlin and Genie families of codecs has ceased. Tieline will continue to provide support and software updates for all Merlin and Genie codecs.

Share on facebook
Share on twitter
Share on linkedin

Other News and Press from Tieline

New Gateway Firmware Released

New Gateway and Gateway 4 Codec Firmware Released Leading codec manufacturer Tieline has announced the release of new firmware v3.04.14 supporting a

The Tieline and MaxxKonnect teams at the 2022 NAB Show: MaxxKonnect Join as Distribution Partner

New Distribution Partner MaxxKonnect

Tieline Announces The MaxxKonnect Group as New Distribution Partner Tieline has announced The MaxxKonnect Group (TMG) as a new distribution partner in

Gateway codecs support RAVENNA, WheatNet-IP, AES67 and ST 2110-30

Livewire Added to Gateway

Native Livewire+ Added to Gateway and Gateway 4 Codecs Leading codec manufacturer Tieline the Codec Company today announced that it had added