Dynalink RTA770 - Manual (Page 108)

ADSL Router User Manaul
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5. Make sure that User certificate
request: User Certificate is selected,
and click Next.
6. Click Submit in this dialog.
7. Now, you'll see status messages on the
screen, then your certificate will be
returned to you. Click Install this
certificate.
8. You'll receive a confirmation message
about accepting the certificate, click
Yes