Technical Summary
This document describes the RTP payload format for the Tactical
Secure Voice Cryptographic Interoperability Specification (TSVCIS)
speech coder. TSVCIS is a scalable narrowband voice coder supporting
varying encoder data rates and fallbacks. It is implemented as an
augmentation to the Mixed Excitation Linear Prediction Enhanced
(MELPe) speech coder by conveying additional speech coder parameters
for enhancing voice quality. TSVCIS augmented speech data is
processed in conjunction with its temporal matched MELP 2400 speech
data. The RTP packetization of TSVCIS and MELPe speech coder data is
described in detail.
Working Group Summary
The document was discussed on the PAYLOAD mailing list. The open issues were addressed
and there are no open issues, there was consensus on the content of the document.
Document Quality
There are at least three or four implementations of the TSVCIS codec.
Authors have implemented the RTP payload for this speech codec.
The authors anticipate that the parties using the MELP payload, RFC 8130,
will be moving in this direction as TSVCIS is an enhanced MELP speech codec.
A request for a media type review was sent to media-types mailing list on Feb. 12, 2019.
Personnel
Ali C. Begen is the Document Shepherd.
The responsible AD is Barry Leiba.
RFC Editor Note
Please make the following change in Section 2:
OLD
secure voice devices to be interoperable across the Department of
Defense [TSVCIS].
NEW
secure voice devices to be interoperable across the US Department
of Defense [TSVCIS].
END