Telecommunications Act
(TCA)

The com­pet­ent au­thor­ity may, sub­ject to any in­ter­na­tion­al ob­lig­a­tions to the con­trary, pro­hib­it tele­com­mu­nic­a­tions ser­vice pro­viders or­gan­ised un­der for­eign law from us­ing ra­dio fre­quen­cies or ad­dress­ing re­sources un­der Art­icle 4 para­graph 1 un­less re­cip­roc­al rights are gran­ted.