Overview:
The 140 series numbers are designated for telemarketing and are subject to strict regulations defined by TRAI (Telecom Regulatory Authority of India). These regulations are enforced by telecom providers and must be adhered to when using 140-series numbers for outbound calls.Functional Hours:
| Day | Allowed Time Window |
| Monday–Saturday | 10:00 AM to 7:00 PM |
| Sunday | Not Allowed |
Key Points:
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Outbound calls are allowed only between 10:00 AM and 7:00 PM from Monday to Saturday.
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No calls are allowed on Sundays.
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Inbound calls are not supported on 140-series numbers.
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Attempting calls outside allowed hours may result in rejections or service errors.
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These restrictions are enforced by telecom providers to comply with TRAI regulations.