Glad to hear it's still a relevant thread & sorry you didn't find it earlier - I didn't have time to put it up until after my final exams.
700 is about how many first round interviews have been offered for the last few years. JCU gets thousands of applications because of the lack of UMAT requirements. For 2015 they have 2,920 total applications for JCU MBBS with 1,957 of them being first preference applications via QTAC. This data is available here:
https://www.qtac.edu.au/ArticleDocuments/196/All_Tables_Semester_1_2015.xlsx.aspx under Table 3B / JCU Continued / Health / Medical Studies / Bachelor of Medicine & Surgery
There were a total of 213 offers with 169 acceptances last year and the remainder of the ~200 cohort total made up by international students who are offered earlier in the year + deferrals from previous years offers & students repeating first year. I had some specific stats on the percentages that metro/outer regional/rural/remote students make up from a Government report but I seem to have forgotten what the document is called.
I'm unsure how many second round interviews they offer but I think it's around 150 - they offer ~700 over 10 days (70/day) and only have 2 days of second round interviews.
This is correct - usually the Dean of Medicine or the Vice Chancellor makes the calls themselves. I am hesitant to give a strict date because all it does is makes people reading the forum stress out more than they need to and the dates are very fluid. They WILL leave a message and you CAN call them back at which point they'll be happy to talk to you. The phone call is supposed to be a helpful/comforting part of the JCU admissions process & I'm very wary that a lot of people read this thread so am not going to give exact dates. I will say that if they've said they call before Christmas then that's very, very early - in previous years it's typically been early-mid January.
OP results come out on the 19th of December and most other states also come out that week. Keep in mind that they still need to conduct the second round interviews for students with better than predicted results before they can figure out their cut-offs. Second round interviews are held on the 7-8th of January as per this document on Page 2 at the bottom right:
https://www.jcu.edu.au/__data/assets/pdf_file/0013/122215/jcu_106048.pdf
Here is the thread from 2015 JCU offers and the page when calls were first noted:
JCU 2015 Med offers !!!