Yealink Sip-T48s
Question about Yealink Sip-T48s
What extra settings do I need with Sunrise/the Fritzbox in order to operate this device? Since it works directly with Swisscom/the Swisscom box when connecting via LAN.
If the Fritzbox does not offer PoE, first get a power supply for the telephone.
Then I assume that you want to use your Sip account. Then you have to open port 5060 on the Fritzbox and assign it to the phone. It may be that Sunrise uses its own port. Hope to have helped further