vPanel 2.0 - "SIP Address" vs. "Softphone / BYOD"?

[Tooth]

The new vPanel 2.0 now has a new feature section called "SIP Address". It references the use of "xxxxxxxxxx@incoming.voipwelcome.com" while the Softphone/BYOD feature section references the use of "xxxxxxxxxx@sip.voipwelcome.com" instead. I've successfully registered my iOS device using the Softphone/BYOD settings, but I'm not sure what the SIP Address settings are for? Anyone?

[Bink]

Your SIP address is your SIP phone number—meaning, anyone using SIP should be able to call you directly using that address and bypass the Public Switched Telephone Network (PSTN).