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If Logitech USB camers microphone does not work (when it is chosen in sound menu), format / sample rate changing in Audio MIDI Setup and rebooting can help.
4. Outgoing video SIP call cannot be established if INVITE SDP size exceeds MTU
Symptoms: SIP server return 408 Reques timeout when trying to establish video SIP call, audio calls can be established successfully through the same server.
Solution: reduce the number of codecs in the INVITE SDP so that the SDP fit into the packet size defined by MTU (usually 1500 bytes) using the following settings
| Code Block | ||
|---|---|---|
| ||
codecs_exclude_sip=mpeg4-generic,flv,mpv,opus,ulaw,h264,g722,g729
allow_outside_codecs=false |
Only codecs supported by both sides of the call should be left, in this case it is VP8 and PCMA (alaw).