Tata Communications and Airtel are the two dominant internet leased line (ILL) providers for Indian businesses. Both offer guaranteed bandwidth, uptime SLAs, and dedicated support. This comparison helps IT managers choose the right ISP for their office connectivity.
| Feature | Tata Communications ILL | Airtel ILL (Internet Leased Line) |
|---|---|---|
| Coverage | Pan-India + international MPLS | Pan-India — strong Tier 1 + Tier 2 city reach |
| Uptime SLA | 99.95% – 99.99% | 99.95% – 99.99% |
| MTTR (fault resolution) | 4 hours (metro) / 8 hours (Tier 2) | 4 hours (metro) / 8 hours (Tier 2) |
| Pricing (10 Mbps ILL, metro) | ₹12,000 – ₹20,000/month | ₹10,000 – ₹18,000/month |
| Bandwidth Options | 2 Mbps to 10 Gbps | 2 Mbps to 10 Gbps |
| SD-WAN Services | Yes — Tata IZO SD-WAN | Yes — Airtel SD-WAN |
| MPLS for Multi-Branch | Industry-leading — Tata MPLS VPN | Strong MPLS offering |
| IPv6 Support | Yes | Yes |
| NOC Support | 24/7 NOC (dedicated enterprise) | 24/7 NOC |
| Cloud On-Ramp (AWS/Azure) | Tata NxtPort — direct cloud connect | Airtel Direct Connect to cloud |
Most ISPs including Tata and Airtel offer leased lines starting from 2 Mbps (guaranteed, symmetric). The practical minimum for a 10-person office doing video calls is 10 Mbps. For offices with Zoom/Teams + cloud apps, we recommend at least 50–100 Mbps.
Metro cities (Delhi, Mumbai, Bengaluru): 2–4 weeks. Tier 2 cities: 4–8 weeks. The provisioning time depends on last-mile infrastructure — if the building has existing fibre, it's faster. We handle ISP coordination as part of our connectivity services.
Yes — we commonly deploy dual-ISP setups using Tata as primary and Airtel as secondary (or vice versa), with an SD-WAN or firewall managing failover. This provides genuine redundancy since Tata and Airtel have different submarine cable and last-mile infrastructure.
Get the best leased line quote for your office — we work with Tata, Airtel, and Jio to get you the right connectivity at the best price.