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software:linphone

What?

linphone is a SIP software

issue description

After dialling, the line gets established, but no voice from the other side can be heard.

environtment

  • several linuxes
  • NAT environment

problem

The other communication partner is sending packets which the local NAT gateway does not send to the system on the LAN, where the SIP call originates from.

resolution

  • variant 1: configure a “stun” server. You have to have one available to use, or can run an own stun service.
  • variant 2:
    • configure forwarding for the involved ports. With this, the NAT gateway will forward UDP 5060, 7078, 9078 to your LAN system
    • additionally you have to hint which IP your NAT gw on the internet is using in the linphone preferences, and check “Behind NAT/Firewall”.
software/linphone.txt · Last modified: 2015/08/11 20:32 (external edit)