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I use a GPRS connection in my laptop from my cell phone , Motorola C350. My service provider is Airtel.
How should I know what is my Router ? And how I can set it up to a speific port ?

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: When you use a phone as a GPRS modem the phone normally acts as a simple PPP/modem device — it is not a full-featured router with port‑forwarding settings you can change. Two practical things to check:

  • Find the gateway/router your laptop actually sees. On Windows open a Command Prompt and run ipconfig /all; on macOS/Linux use ip route or netstat -rn. Look for the default gateway address. That is the device your PC sends outbound traffic to (often the phone when tethered), but it may still be behind another NAT operated by Airtel.
  • Test whether inbound ports can reach your laptop. From the laptop, run a simple TCP listener on the port you want (for example with nc -l 12345) and use an external port-scanner or another internet host to attempt a connection to the public IP you observe (see whatismyip.org). If the connection fails while outbound connections work, your connection is behind carrier NAT and you cannot forward ports from Airtel to your laptop.

If the phone is acting merely as a modem and the carrier uses NAT (common on mobile data), there is no way to configure port forwarding on the carrier side. Workarounds:

  • Use a VPN or reverse SSH tunnel to a server with a public IP and then forward traffic through that tunnel.
  • Use a third‑party service (ngrok, Pagekite, etc.) that creates an externally reachable tunnel to your laptop.

’s suggestion to search is on point for getting tutorials specific to your phone and provider. For configuring an actual home router like a D‑Link DIR‑615 (as asked), you would log into its web UI, locate “Port Forwarding”/“Virtual Server,” and map the external port to the laptop’s LAN IP. But for a phone-tethered GPRS link, check for carrier NAT first; if present, use a VPN/tunnel solution.

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airtel connection motorola c350 laptop

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How do i configure d link dir-615 router to dialup internet phone

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