sulasok2|@sulasok

sulasok2|@sulasok : Pilipinas 49.7K members. @sulasok. Open a Channel via Telegram app. Preview channel. Don't have Telegram yet? Prior to the development of customer-dialed toll-free service many telephone companies provided the service by operator assistance for telephone subscribers without dial telephones (manual service).Operator-assisted toll-free calling included the Zenith number service introduced in the 1930s in the U.S. and Canada, as well as the manual .