https://www.trend.az/business/it/983997.html
Azerbaijani Mobile Operator Extends Subscriber Option Calling Line Identification Restriction to 30...
Aug 27, 2007 - Azerbaijan, Baku / corr Trend Azercell Telekom JV has designed SOCLIR (Subscriber Option Calling Line Identification Restriction) service, the company said....
calling line identificationmobile operator