| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | S-1/A | S-1/A | S-1/A | 20-F | 20-F | 20-F | 20-F | 20-F |
| Revenues: |
| Product line “B” | 2.3 | 2.3 | 2.6 | 3.0 | 3.2 | | | |
| Product line “A” | 11.5 | 12.1 | 12.0 | 13.6 | 14.9 | | | |
| Product line "C" | 7.7 | 12.0 | 8.7 | 6.1 | | | | |
| Billing and related services | 13.9 | 14.4 | 14.6 | 16.5 | | | | |
| Total revenues [+] | 21.6 | 26.3 | 23.4 | 22.7 | 18.1 | 18.1 | 18.1 | 20.9 |
| Products | | | | | | | | 3.9 |
| Services | 20.9 | 24.8 | 22.0 | 20.4 | 16.0 | 15.6 | 14.1 | 17.0 |
| Net interest income | 0.3 | 0.1 | 0.2 | 0.2 | 0.3 | 0.2 | 0.2 | 0.2 |
| Revenue growth [+] | -18.2% | 12.7% | 3.1% | 25.0% | 0.4% | 0.1% | -13.7% | -16.4% |
| Product line “B” | 2.5% | -13.5% | -10.6% | -8.0% | | | | |
| Product line “A” | -4.3% | 0.7% | -11.8% | -8.9% | | | | |
| Product line "C" | -36.0% | 36.9% | 43.0% | | | | | |
| Billing and related services | -3.3% | -1.9% | -11.6% | | | | | |
| Messaging | -36.0% | 36.9% | 43.0% | | | | | |
| Cost of goods sold [+] | 10.0 | 12.5 | 11.2 | 10.1 | 6.1 | 7.0 | 6.8 | 8.6 |
| Cost of product sales | | | | | | | | 0.4 |
| Cost of services | | | | | | | 6.5 | 8.2 |
| Gross profit | 11.5 | 13.9 | 12.2 | 12.5 | 12.0 | 11.0 | 11.2 | 12.3 |
| Gross margin | 53.4% | 52.7% | 52.3% | 55.3% | 66.1% | 61.1% | 62.2% | 58.8% |
| Selling, general and administrative [+] | 2.5 | 3.0 | 2.8 | 3.3 | 2.9 | 2.9 | 2.5 | 2.9 |
| Sales and marketing | 1.0 | 1.4 | 1.0 | 1.2 | 1.3 | 1.3 | 1.1 | 1.2 |
| General and administrative | 1.6 | 1.6 | 1.9 | 2.1 | 1.6 | 1.7 | 1.4 | 1.8 |
| Research and development | 3.5 | 4.0 | 4.0 | 4.2 | 3.7 | 3.4 | 3.5 | 2.9 |
| Other operating expenses | 0.0 | 0.0 | 0.0 | | | -0.9 | | |
| EBITDA [+] | 5.7 | 7.0 | 5.7 | 5.2 | 5.4 | 5.7 | 5.4 | 6.6 |
| EBITDA growth | -18.6% | 24.0% | 9.1% | -4.5% | -4.4% | 5.9% | -18.5% | -14.3% |
| EBITDA margin | 26.5% | 26.7% | 24.2% | 22.9% | 30.0% | 31.5% | 29.7% | 31.5% |
| Depreciation and amortization | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.2 | 0.2 |
| EBIT [+] | 5.5 | 6.8 | 5.5 | 5.0 | 5.4 | 5.6 | 5.2 | 6.4 |
| EBIT growth | -19.1% | 25.0% | 8.4% | -5.8% | -4.1% | 7.2% | -18.9% | -14.0% |
| EBIT margin | 25.6% | 25.9% | 23.4% | 22.2% | 29.5% | 30.9% | 28.8% | 30.7% |
| Non-recurring items [+] | | | | | | 0.9 | | |
| Loss (gain) on sale of business | | | | | | 0.9 | | |
| Interest expense | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Interest expense | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Other income (expense), net | 0.1 | 0.1 | 0.4 | 0.5 | 0.2 | 1.5 | 0.2 | -0.1 |
| Pre-tax income | 5.6 | 6.9 | 5.8 | 5.5 | 5.6 | 6.2 | 5.4 | 6.3 |
| Income taxes | 0.3 | 0.9 | 0.5 | 0.5 | 0.4 | 0.6 | 1.2 | 1.3 |
| Tax rate | 5.9% | 13.6% | 7.9% | 8.3% | 7.9% | 9.6% | 21.8% | 20.4% |
| Net income | 5.3 | 5.9 | 5.4 | 5.1 | 5.1 | 5.6 | 4.2 | 5.0 |
| Net margin | 24.5% | 22.6% | 23.0% | 22.3% | 28.3% | 31.1% | 23.3% | 24.0% |
| |
| Basic EPS [+] | $0.26 | $0.30 | $0.27 | $0.26 | $0.27 | $0.29 | $0.22 | $0.26 |
| Growth | -11.5% | 9.9% | 5.4% | -3.4% | -8.8% | 33.1% | -16.5% | -9.6% |
| Diluted EPS [+] | $0.26 | $0.29 | $0.27 | $0.25 | $0.26 | $0.29 | $0.22 | $0.26 |
| Growth | -11.7% | 9.8% | 5.3% | -3.3% | -8.5% | 31.8% | -16.3% | -9.7% |
| |
| Dividends per share [+] | $0.26 | $0.26 | $0.24 | $0.26 | $0.30 | $0.32 | $0.27 | $0.30 |
| Growth | 0.0% | 8.3% | -7.7% | -13.3% | -6.3% | 18.5% | -10.0% | 25.1% |
| |
| Shares outstanding (basic) [+] | 20.1 | 20.0 | 19.9 | 19.7 | 19.3 | 19.3 | 19.2 | 19.2 |
| Growth | 0.5% | 0.5% | 0.8% | 2.1% | 0.3% | 0.3% | 0.3% | 1.2% |
| Shares outstanding (diluted) [+] | 20.4 | 20.3 | 20.1 | 20.0 | 19.6 | 19.6 | 19.3 | 19.3 |
| Growth | 0.6% | 0.7% | 0.9% | 2.0% | 0.0% | 1.3% | 0.1% | 1.3% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |