HYDERABAD, April 15: The Pakistan Telecommunication Company has clarified that its digital system in Mirpurkhas had not totally collapsed as had been reported in the press and its digital exchanges were working perfectly.

A PTCL spokesman, in a statement issued here the other day, however, said that there had been a failure at the Mirpurkhas Satellite Town exchange at 14:35pm on Thursday due to heavy fluctuations in the Hesco power supply.

The fluctuation, he said, damaged the airconditioning system of the switch room of the digital transit exchange, Mirpurkhas, resulting in an increase of temperature there.

He said the functioning of 1,400 telephones and some trunk lines was disturbed but the remaining 5,512 telephones had remained operational.

He said the affected circuits were restored at 17:39pm on the same day.

The spokesman further clarified that the NWD system was only partially disturbed without disturbing the transmission of messages as they were passed on through alternative routing arrangements.