Supported Standards and Codecs
This page describes the standards and codecs used by TeleSign’s Voice API.
The TeleSign Voice API supports the PCMU and PCMA codecs for voice calls. These codecs are specified by the G.711 standard.
DTMF Supported Standards
TeleSign supports the RFC-2833 standard for DTMF, which is used both by the collect digits and send DTMF features. TeleSign does not apply transcoding on DTMF.
Phone Number Formats
TeleSign supports E.164. E.164 is an international public telecommunication numbering format that describes how to present phone numbers. You can read more about this format here: https://en.wikipedia.org/wiki/E.164.
This section provides suggestions for next steps.
- Voice API Reference - Review the technical details about how the Voice API works and what options are available.