Hello All, can someone advise me if the Sip proxy manager could resolve the below mentioned issue. Issue: Android and IOS devices attempting to register remotely cannot register. my determination is that my FQDN resolves to the VOIP (SIP) IP address provided by my ISP and this IP is not internet facing. so only SIP traffic can traverse the link. so remote devices cannot reach the PBX to register. Any assistance or Ideas will be helpful.