RTP Payload Format for the TETRA Audio Codec
draft-ietf-payload-tetra-03
payload Reisenbauer
Internet-Draft Frequentis
Intended status: Standards Track Brandhuber
Expires: January 27, 2020 eurofunk
Hagedorn
Hagedorn
Hoehnsch
T-Systems
Wenk
Frequentis
July 26, 2019
RTP Payload Format for the TETRA Audio Codec
draft-ietf-payload-tetra-03
Abstract
This document specifies a Real-time Transport Protocol (RTP) payload
format for TETRA encoded speech signals. The payload format is
designed to be able to interoperate with existing TETRA transport
formats on non-IP networks. A media type registration is included,
specifying the use of the RTP payload format and the storage format.
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document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions Used In This Document . . . . . . . . . . . . . . 3
3. Media Format Background . . . . . . . . . . . . . . . . . . . 3
4. Payload format . . . . . . . . . . . . . . . . . . . . . . . 4
4.1. RTP Header Usage . . . . . . . . . . . . . . . . . . . . 4
4.2. Payload layout . . . . . . . . . . . . . . . . . . . . . 4
4.3. Payload Header . . . . . . . . . . . . . . . . . . . . . 5
4.3.1. I bit: Frame Indicator . . . . . . . . . . . . . . . 5
4.3.2. F bit: Frame Type . . . . . . . . . . . . . . . . . . 6
4.3.3. CTRL: Control bit(5 bits) . . . . . . . . . . . . . . 6
4.3.4. C bit: Failed Crypto operation indication . . . . . . 6
4.3.5. FRAME_NR: FN (5 bits) . . . . . . . . . . . . . . . . 7
4.3.6. R: Audio Signal Relevance (3 bits) . . . . . . . . . 7
4.3.7. S: Spare (7 bits) . . . . . . . . . . . . . . . . . . 7
4.4. Payload Data . . . . . . . . . . . . . . . . . . . . . . 8
5. Payload example . . . . . . . . . . . . . . . . . . . . . . . 8
6. Congestion Control Considerations . . . . . . . . . . . . . . 8
7. Payload Format Parameters . . . . . . . . . . . . . . . . . . 9
7.1. Media Type Definition . . . . . . . . . . . . . . . . . . 9
8. Mapping to SDP . . . . . . . . . . . . . . . . . . . . . . . 10
8.1. Offer/Answer Considerations . . . . . . . . . . . . . . . 11
8.2. Declarative SDP Considerations . . . . . . . . . . . . . 11
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
10. Security Considerations . . . . . . . . . . . . . . . . . . . 12
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 12
11.1. Normative References . . . . . . . . . . . . . . . . . . 12
11.2. Informative References . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
1. Introduction
This document specifies the payload format for packetization of
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