Cisco 6901 IP phone model is used for creating inexpensive communication networks in places like elevators, hotel or restaurant corridors etc (UC Phone 6901, Standard handset).
Persia Telecom Co. is a subsidiary of IOEC (Iranian Offshore Engineering & Construction Company) in Islamic Republic of Iran that was established in 2004.
IOEC is the 1st Iranian general contractor in the Oil & Gas industry.