Please note that para 17 mentions that in most cases, shares are included in the weighted average number of shares from the date the consideration is receivable, for example: equity shares issued in exchange for cash are included when cash is receivable. It does not mentioned the word received....in your example, calls are receivable although they are not received. So, your next step is to refer to para 19.
Hope this solves your query.
Para 19 mentions that Partly paid equity shares are treated as a fraction of an equity share to the extent that they were entitled to participate in dividends relative to a fully paid equity share during the reporting period.
For your Illustration, the number of shares for eps caclulation will be as follows-
Fully Paid Shares (A) = 800 fully paid shares
Number of partly paid shares (B) - 960
(Assuming that partly paid shares are entitled to participate in the dividend to the extent of amount paid, number of partly paid equity shares would be taken as 160 for the purpose of calculation of earnings per share. Rs 8 paid up for 200 shares, i.e. 80% of value for 200 shares which is equal to 160 shares.)
As the calls are due and not received, during the period into consideration, these shares would be entitled to dividend to the extent of paid up value. See bold + underlined words mentioned above.