Tehran public telephone lifetime is five years

”A Tehran public telephone lifetime is five years and is replaced afterwards,” Ramin Aram told Mobna news agency.
”The telephones are installed by Tehran Telecommunication Company and second public phone operator,” he said.
”The operator of public telephone is required to maintain the installed devices and there are around 4,000 of them in each region,” he added.
Some 80 percent of public telephones in Tehran are card-operated.
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