Table of Contents
What is a successful codec negotiation?
A successful codec negotiation is an essential condition for a successful call between two parties. At the same time, an audio stream cannot be established between two parties unless a mutually supported codec is found and used.
How do I negotiate codecs In FreeSWITCH?
Codec Negotiation in FreeSWITCH FreeSWITCH supports two basic modes of codec negotiation: early and late. Early negotiation means that the codec is negotiated between FreeSWITCH and the endpoint as soon as possible, even before FreeSWITCH needs to send media (such as ringing) or answer the the call.
Can FreeSWITCH pick a codec without knowing what codec the B leg?
As you can see, when FreeSWITCH picks a codec for the A leg without knowing what codec is set on the B leg then there can easily be a “codec mismatch.” A codec “mismatch” isn’t always a bad thing, but many times it is nice to have both call legs share the same codec.
What codecs are supported by voipnow and the callee?
Now both VoipNow and the callee at 3004 know the codecs supported by the other parties. As you can see, the only common codec supported by both parties is G711 u-law (PCMU). This means G711 will be used for the voice stream between VoipNow and the callee:
How many bytes are in a KB?
Kilobytes Kilobyte (KB) is a common measurement unit of digital information (including text, sound, graphic, video, and other sorts of information) that equals to 1000 bytes. In practical information technology, KB is actually equal to 2 10 bytes, which makes it equal to 1024 bytes.
How to adjust the number of bytes informed for the metric?
function formatBytes (numBytes, decPlaces) { /* Adjust the number of bytes informed for the most appropriate metric according to its value. Args: numBytes (number): The number of bytes (integer); decPlaces (Optional [number])): The number of decimal places (integer).
What are the codec settings for the Yealink device?
Let’s look at some of the codec settings: The caller is a Yealink device with the following codecs activated: The device publishes these codecs in the SDP of the INVITE sent from 192.168.1.227: This INVITE reaches Kamailio and then is forwarded to Asterisk.