sip monitoring tools
Some good monitoring tools: homer: easy to install with docker for its server and install helifpy on a sip/client/host : nohup ./heplify -hs homer_server:9060 & grep sngrep, ngrep pcap tcpdump/wireshark…
cross compile native libwebrtc ( on x86_64 host) for arm64
Direct compile webrtc on arm64 will fail: webrtc seems does not support direct support on arm, we will get errors: … Running hooks: 18% ( 4/22) sysroot_arm64 ________ running ‘vpython…
How to synchronize audio video stream (a/v sync)
How to a/v sync in IETF RFC? The RFC specified how to do a/v sycn generally in https://tools.ietf.org/html/rfc6051 RTP flows are synchronised by receivers based on information that is contained…
SIP Register and Kamailio AoR
The RFC 3262 said: https://tools.ietf.org/html/rfc3261#section-10 The To header field contains the address of record whose registration is to be created, queried, or modified. That means TO contains AoR, and it…
FAX: Error Far end cannot receive at the size of image
Fax ( over VoIP) Error: Error Far end cannot receive at the size of image Resolution (1): from http://help.activepbx.com/KB/a69/error-far-end-cannot-receive-at-the-size-of-image.aspx When you scan from certain Scanners it flips the image horizontally open…
SIP header : Privacy meaning
SIP protocol always seems to be complicated than I thought/expected. one example : Sip header Privacy This header is like this: Privacy: value the value could be: header, session, user, none, and…
WebRTC janus gateway use cases
If you are interested in the webrtc, this project is quite interesting great demo at: https://janus.conf.meetecho.com/demos.html the source code is at: https://github.com/meetecho/janus-gateway I did contribute two commits a year ago https://github.com/meetecho/janus-gateway/commits?author=mingewang…
Asterisk real time db and rtcachefriends
I tried to use asterisk real time db, and somehow sip show peers does not show anything, After couple of hours googleing , and found this: rtcachefriends (global) If is turned…
