It would appear that all links for the SCSIP plugin on the board have either
been removed or are broken, also if you search for the author you will also have no joy (smartercontrol). The SCSIP plugin did have a awfull lot of online tutorials which were or are if they are still on the net excellent.
Duncan also provided excellent support. In the early days of the plugin there were several issues which were by and large where in Duncans control sorted very quickly both feature requests and bugs.
Would suggest if haven't already read through the posts do so and come to your own conclusions.
If you do spend time reading the it may well give you pointers to what you wish to do.
Although I do not currently use caller ID for anything as I am running on my legacy Panasonic KXTD 1232 at the moment when I get my Elastix box up and running in production I will be using caller ID.
This will be worked on when HS is rebuilt so it will be a while.
At the moment I can dial out on a trunk of the panasonic into a way2call and use features on HS I don't think this is possible with the SCSIP plugin although as they say don't quote me on that.
I use Grandstream GXP2000 on my Elastix. What I would like to do is use a speedial button on the phone and use the CID as a reference or variable to indicate which room the phone is in to trigger events.
Something like Speedial button+access code+CID+event to be triggered which depends on where the phone is located(CID) and which speedial button is pressed on a specific phone. Button 1 Ceiling lights on off, Button 2 table lamp on off, Button 3 TV on off, Button 4 Awake asleep,
Don't think the plugin can do this as it acts like an FXS, think I might still have to keep the way2call to do this which sadly is a lot of plumbing and no CID pass through.
I also have 2 Grandstream GXW3140 to play with, a little old now but surely worth a tinker. Not sure if HS Touch will work.
I do know someone on the board asked for a feature to show the 10 last number be available in a virtual device and pretty sure this was working, although once again have a search.
What I can tell you is, if you google the author you will get his new web site which is under construction although the SCSIP plugin version 22.214.171.124. is available to download although no documentation.
Hope this is of help and please share your projects as I like to see what others are doing.