Getting a SIP call whenever an IFTTT recipe is triggered
 In my previous post I explained how to run a custom script triggered by an IFTTT reipe.  In this post I will explain how to get a SIP call when an IFTTT action is triggered.   I assume you have created the recipe, linked Dropbox and configured incrontab as explained here .   Requirements:  -A cli SIP client, pjsua (from the pjsip library) is perfect for this job  -expect package (in order to "talk" to pjsua with spawn)  -festival package (this includes text2wave for text-to-speech)   I didn't find pjsip as a package for Debian, so I had to download it from  http://www.pjsip.org  and compile it manually, it's straightforward (configure-make dep-make).  pjsua is located inside the /pjsip-apps folder so you may either copy it somewhere convenient or create a soflink in order to run it.   Create your pjsip conf file (this may depend on your SIP provider) and paste:    --null-audio --registrar sip:your.sip.provider.com --realm=* --id sip:sipuser@your.sip.provider.com --us...