Bharati-AirTel is a GSM mobile phone service provider in Delhi and the surrounding areas. It offers various pre-paid and post-paid plans, as well as value added services.

Manufacturers and suppliers of mobile and cellular telephone accessories.

Offering WAP and text messaging services to businesses.

Providing electronic security products and telecom, software, networking and broadband services.

Information on telecommunication, basic telephone, mobile phone and internet service provider, leased circuits, intelligent network, INET, phone plus services, information on Delhi tourism.

Makers and suppliers of PABX systems. Describes own brand products, and lists other makes available for distribution.

Offers call center services to foreign customers. Describes infrastructure and facilities.