Grandstream
How To Upgrade And Provision the Grandstream GXP IP Phone
The GXP1610/GXP1615/GXP1620/GXP1625/GXP1628/GXP1630 can be upgraded via TFTP, HTTP/HTTPS, FTP or FTPS by configuring the URL/IP Address for the TFTP/HTTP/HTTPS/FTP/FTPS server and selecting a download method. Configure a valid URL for TFTP or HTTP/HTTPS or FTP/FTPS; the server name can be FQDN or IP address.
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