reply to idbit
Re: Choppy sound quality. Connecting IP phone directly to modem. If you haven't already tried this, try powering down the modem, disconnecting your current router, then power up the modem and connect your phone.
Does your current router get a public WAN address at the moment?
DPC3825 (bridged mode) - WRT610N + Tomato - Panasonic KX-TGP500 - Asterisk 11.0.2 on Virtual Server
Anveo - FreePhoneLine - Voxbeam - Numbergroup - Callcentric - VoIP.MS - Localphone - UKDDI