Tech•Food•Horsepower

TeleVantage makes using an E.164 format VoIP provider (like Bandwidth.com) really simple if you know what box to check. When creating your SIP Server(s), point to Number Formatting > SIP URI Rules and check the “Include URI parameter ‘user=phone’ box and “Prefer number in global format” sub box.

Ta da! Pluses with no goofy routing rules (which won’t work, probably why you’re here). Since you’re probably wondering, I’m using TeleVantage for a couple enterprise class IVR systems.