Wireless Tata Telecom Infrastructure (WTTL), the infrastructure arm of Tata Teleservices, has finally decided to merge its tower business with Quipo Telecom Infrastructure (QTIL), a member of the SREI Group. As per the deal, Quipo's 5000 odd towers would be merged with Tata's 10,000 towers. In addition Quipo will also pay Rs 3500 crore for a 49 per cent stake in the merged tower company.