Using Exetel Internet. Can't see WiFi calling Option when connected to this Modem. How can I activate wi-fi calling in my internet ? When connected with my friedns wifi in a different location I can d

HI, how can we setup the VoIP service in VR400 Modem. Does it support VoIp ?? Checked the Modem for Telephony setup, cant find it. Exetel has given sip details. password service number. How can I setu