An alternative may be to change the plan so as to align the number lengths of fixed and mobile services. This would have the additional benefit of enabling the first digit of fixed services to be different from the first digit of mobile services. However while this would be intuitively attractive it the graphical representation at Appendix 1c shows that it does not represent a gain over the proposal of Appendix 1b. The approach of Appendix 1c is not required to meet numbering needs, has no intrinsic advantage over the proposal of Appendix 1b.