Exhibit 12.1

Ratio of Earnings to Fixed Charges Syniverse Holdings, Inc. (dollars in thousands)



|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|----------------------------------------------------- |  | -------------------------- | ------- | -------------------------- | - | ------- | -------------------------- |  | -------------------------- | ------ | -------------------------- | - | ------ |  | - | ------- | -
|                                                      |  | Year EndedDecember 31,2007 |         | Year EndedDecember 31,2006 |   |         | Year EndedDecember 31,2005 |  | Year EndedDecember 31,2004 |        | Year EndedDecember 31,2003 |  
|Net Income (loss)                                     |  | $                          | 52,419  |                            | $ | 89,724  |                            |  | $                          | 9,804  |                            | $ | 15,063 |  | $ | (57,926 | )
|Provision for (benefit from) income taxes             |  |                            | 31,310  |                            |   | (39,574 | )                          |  |                            | 9,041  |                            |   | 8,729  |  |   | 10,057  |  
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Income (loss) before income taxes                     |  | $                          | 83,729  |                            | $ | 50,150  |                            |  | $                          | 18,845 |                            | $ | 23,792 |  | $ | (47,869 | )
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Fixed charges:                                        |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Interest expensed                                     |  | $                          | 25,061  |                            | $ | 26,788  |                            |  | $                          | 32,406 |                            | $ | 44,577 |  | $ | 46,235  |  
|Amortization of deferred financing costs and discount |  |                            | 542     |                            |   | 540     |                            |  |                            | 2,241  |                            |   | 8,351  |  |   | 11,893  |  
|Estimated interest factor on operating leases         |  |                            | 1,037   |                            |   | 1,006   |                            |  |                            | 1,010  |                            |   | 1,016  |  |   | 871     |  
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Total fixed charges                                   |  |                            | 26,640  |                            |   | 28,334  |                            |  |                            | 35,657 |                            |   | 53,944 |  |   | 58,999  |  
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Earnings:                                             |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Income (loss) before income taxes                     |  |                            | 83,729  |                            |   | 50,150  |                            |  |                            | 18,845 |                            |   | 23,792 |  |   | (47,869 | )
|Fixed charges                                         |  |                            | 26,640  |                            |   | 28,334  |                            |  |                            | 35,657 |                            |   | 53,944 |  |   | 58,999  |  
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Total earnings                                        |  | $                          | 110,369 |                            | $ | 78,484  |                            |  | $                          | 54,502 |                            | $ | 77,736 |  | $ | 11,130  |  
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |  
|Ratio of earnings to fixed charges                    |  |                            | 4.14    |                            |   | 2.77    |                            |  |                            | 1.53   |                            |   | 1.44   |  |   | 0.19    |  
|                                                      |  |                            |         |                            |   |         |                            |  |                            |        |                            |   |        |  |   |         |