---
title: "Which Audio Codecs Does Flowroute Support?"
slug: "which-audio-codecs-does-flowroute-support"
description: "List of supported codecs"
tags: ["codec", "Audio", "protocol", "G.711", "G.729a", "Ulaw", "Alaw", "DTMF", "Tech Spec", "Attribute", "SDP", "UDP"]
updated: 2025-08-19T15:22:28Z
published: 2025-08-19T15:22:28Z
canonical: "support.bcmone.com/which-audio-codecs-does-flowroute-support"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.bcmone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Which Audio Codecs Does Flowroute Support?

Please refer to [**Technical Specifications**](/flowroute-support/docs/flowroute-service-guide-technical-specifications) for a complete service guide.

Codecs Supported (SDP media attribute):

1. **G.711 Ulaw (0)**
2. **G.711 Alaw (8)**
3. **DTMF tones (101)**
4. **G.729a (18)**

Flowroute takes a unique approach to deliver call audio: via **Direct Media**. RTP media on your calls is delivered directly from your equipment to a peering network’s media gateway on the PSTN.

Read more about Direct Media in [this KB article](/flowroute-support/docs/what-is-direct-media-delivery).