Grandstream HT802 to Yeastar
Setup Yeastar User
In Yeastar admin portal, add user for the ATA and configure as below:
Disable Voicemail
User name: admin
Password: admin
Go to Accounts 1
Make Account Active: Yes
SIP server address/Outbound Proxy is YOUR URL for the Yeastar instance.
User name is the extension number and the password is the password
Subscribe registration to 120
NAT Transversal :Keep Alive
Goto Status and confirm it is registered and active
Make test calls
Helpful fax settings
Scroll down and configure the following options: