Keywords: asterisk

### SIP

In sip.conf, there are three parameters that control the TOS settings: "tos_sip", "tos_audio", "tos_video" and "tos_text". tos_sip controls what TOS SIP call signaling packets are set to. tos_audio, tos_video and tos_text controls what TOS RTP audio, video or text accordingly packets are set to.

There are four parameters to control 802.1p CoS: "cos_sip", "cos_audio", "cos_video" and "cos_text". It behavior the same as written above.