A:
Really depends on what BRIGHTHOUSE will support.
Get in touch with them and find out what version of the DOCSIS specification they currently support. This modem will support version 2 and 3.
So, if your ISP will support DOCSIS v2.0 or 3.0 this modem/router/WiFi access point will work for you. IT may NOT support your telephone, if the phone has its own modem. If your current service has two separate devices, this device will only support internet activities; web browsing/TV/file downloads/uploads, etc. It will support Voice over IP [VoIP] telephone services like SKYPE.
Some service providers like Comcast have a separate modem for the VoIP telephone service that they provide. So, check with your provider before you buy this - expecting that it will cover everything.