I am migrating my aging ShoreTel system to RC and going through the onboarding process. After configuring my network switches and firewall according to the Network Requirement for Ring Central MVP, I've tried booting up my first three phones, all of which give a "No Service" warning on the display. I opened a ticket with support but only got a few suggestions before I was asked to take the phone home and try it there.
The phones in question are Yealink model T42s
On the phone itself, in the status menu, the message is "Account Unregistered", and in the admin console, the icon next to the phones changed from Order in Progress to Offline, so I know the phone is communicating, at least to some degree. A packet capture from the phones web interface shows this as well. Also from the web interface, I am able to ping the provisioning server "yp.ringcentral.com" and the Outbound Proxy Server "sip131-1111.ringcentral.com", but the Account Status says Register Failed.
All web filtering, IPS, SIP ALG, etc are turned off for the Ring Central rules.
Using Juniper switches with LLDP to push the phone into the VoIP VLAN, and Sophos XG firewall.
Anything else can I look at here?
