Spousal Contribution Guidelines. You and your spouse must file a joint tax return to take advantage of IRS guidelines for spousal contributions. Under the IRS spousal IRA rules, both spouses can make contributions to their accounts even if only one has earned income.Spouses can also make contributions to each otherâs IRAs.ou and your spouse must file a joint tax return to take advantage of IRS guidelines for spousal contributions. Under the IRS spousal IRA rules, both spouses can make contributions to their accounts even if only one has earned income. Spouses can also make contributions to each otherâs IRAs.
sigmet SIGMET, or Significant Meteorological Information, is a weather advisory that contains meteorological information concerning the safety of all aircraft. There are two types of SIGMETs, convective and non-convective.
SONET defines optical signals and a synchronous frame structure for multiplexed digital traffic. It is a set of standards that define the rates and formats for optical networks specified in ANSI T1.105, ANSI T1.106, and ANSI T1.117.oth SONET and SDH are based on a structure that has a basic frame format and speed. The frame format used by SONET is the Synchronous Transport Signal (STS), with STS-1 as the base-level signal at 51.84 Mbps.