December 1 .

November 3 – active till end-January, following complaints about the company’s customers facing problems in porting out.

on Monday , Trai asked RCom to keep "all UPCs expiring on December 31, 2017, valid till 23:59:59 hours of January 31, 2018 , in the interest of the company’s subscribers”.

Monday , starting January 1, 2018, till the month end.

The telecom regulator, following fresh customer complaints, has yet again asked Reliance Communications (RCom) to smoothen the process of customers wanting to exit the carrier’s network in circles where it switched off services fromIt has asked RCom to keep the unique porting codes (UPCs) -- issued following the regulator’s earlier direction datedThe Telecom Regulatory Authority of India (Trai) had originally asked the company to keep these UPCs active till December 31.However, the regulator said it had received many complaints from RCom subscribers regarding their inability to port out due to non-receipt of UPCs.In a notice issuedRCom had shut its wireless business at the end of November.The regulator has asked RCom to apprise customers with latest information on active UPCs via text messages, especially those who have been unable to move out of the carrier’s network. This involves RCom customers hit by the sudden closure of its 2G services in 8 circles and stoppage of CDMA services in 9 circles, post-upgradation to 4G networks.Trai has also asked RCom to submit a compliance report everyLast week, RCom inked binding agreements to sell its wireless infrastructure assets, including spectrum, towers, optic fibre cable network and media convergence nodes to Reliance Jio Infocomm. The deal is likely to be completed between January and March 2018.RCom has said it will use the proceeds of the cash deal solely for prepayment of debt. The company, weighed down by Rs 45,000 crore of loans and the failed merger with Aircel, had been in the midst of a strategic debt restructuring (SDR) programme with the lenders.