New Delhi, July 08: Convinced there would be no shortage of set-top boxes for the first phase, government is likely to issue a notification in a day or two for a zone-wise roll-out of CAS from September one in three metros even as it may be implemented in Chennai in one go. South Delhi, South Mumbai, one zone of Kolkata and the whole of Chennai are likely to get the first taste of CAS, Information and Broadcasting Ministry sources said today. The information and broadcasting ministry is likely to issue one notification for the zone-wise roll out for Delhi, Mumbai and Kolkata and another for Chennai. Sources said the zone to be notified in Kolkata for the first phase was still being worked on. In Chennai, where estimates show a low demand for set-top boxes because of Hindi pay channels not being popular, its availability has been put at 50,000 which may be enough. While South Delhi has 2.4 lakh cable homes and an estimated requirement of 40,000-45,000 set-top boxes, South Mumbai has 4.10 lakh cable subscribers and the requirement of set-top boxes could be as high as 80-90 per cent. Sources said nearly three lakh set-top boxes were expected to arrive by July end taking care of the first phase and of this 1.25 lakh have already been imported. Meanwhile, star is understood to have conveyed to the government that it was ready to fall in line with the proposal of Rs 72 plus taxes to all consumers from August one and beyond for three months in non-CAS notified zones in the four metros. However, other broadcasters have yet to come around. Bureau Report