Month: November 2015

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 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…

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…

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…

Treat others as you would be treated. Treat others as they would like to be treated.   Some interesting articles: https://en.wikipedia.org/wiki/Golden_Rule http://www.peterstark.com/leaders-golden-rule/      

Someone asked me to convert pdf 1.1 to 1.4,  I googled around, and found this: http://stackoverflow.com/questions/3450616/convert-pdf-from-version-1-1-to-1-4-or-higher Pdf 1.1 is forward compatible with pdf 1.4. Everything in pdf 1.1 will work…

This could be useful for our Linux desktop users.  it will help you to get the screen share and video stream on your 64bitLinux desktop. The key is use 32-bits…

It seems everyone has his option how scrum should be run. In an interview, Ken Schwaber said ”I estimate that 75% of those organizations using Scrum will not succeed in getting the…

http://codeutopia.net/blog/2015/04/11/what-are-unit-testing-integration-testing-and-functional-testing/ http://stackoverflow.com/questions/5154371/who-should-write-tests http://www.infoq.com/articles/experience-qa-scrum https://en.wikipedia.org/wiki/Software_testing

http://swreflections.blogspot.com/2013/04/code-ownership-who-should-own-code.html quotes from http://research.microsoft.com/pubs/140711/ownership.pdf : The results of our analysis of ownership in Windows Vista can be interpreted as follows: 1) The number of minor contributors has a strong positive relationship with both…

http://leankit.com/kanban/kanban-agile/ http://www.infoq.com/articles/kanban-siemens-health-services http://edu.leankanban.com/blog/reviewing-siemens-healthcare-case-study http://edu.leankanban.com/kanban-method http://www.infoq.com/articles/scrum-not-enough http://blog.crisp.se/mattiasskarin/files/pdf/converting_a_scrum_team_to_kanban.pdf

A working source code of a simple demo of AWS Lambda for Android Phone could be found at: https://github.com/mingewang/AndroidEventGenerator Notes: (1) The above code runs good on the real android phone.…