I'm facing issue with a Asterisk-based ToIP infrastructure. Sometimes my phone received 'empty' RTP (payload entirely filled with 5d).
I browsed RFC (3551, 3389) and can't find/understand relevant answers.
I have found that two web pages that have the same issue as me:
https://www.wireshark.org/lists/ethereal-users/200402/msg00142.html
http://www.giacomovacca.com/2013/05/the-sound-of-silence-encoded-with-g711.html
So:
- Is anybody know where is the official answer?
- Who decided that filling 0x55 or 0xd5 will make no sound?
- Also, who could explain to me why 0x55 or 0xd5 make 0?
Thanks!