Fixed cellular terminals Premicells. A Fixed cellular Terminal is a box, which contains a number of SIM cards, depending on your requirements. It sits neatly along side your telephone exchange, diverting calls made from fixed lines to mobiles through the SIM cards, making them mobile to mobile calls.ow it can benefit your business. The benefit of a fixed cellular terminal is purely cost. The average cost of a call from a fixed line to a mobile is 12.5p per minute however with a Fixed Cellular Terminal this cost can be cut to an average of 6p per minute.
Ovulation can be calculated by starting with the first day of the last menstrual period (LMP) or by calculating 12-16 days from the next expected period. Most women ovulate anywhere between Day 11 â Day 21 of their cycle, counting from the first day of the LMP.
1 21 day periods: If you have a shorter menstrual cycle, ovulation will occur on day 7 and your most fertile days are days 5, 6, and 7. 2  If your menstrual cycle is regular, but it does not fall within these periods, you can use an online fertility calculator to determine your fertility window.