Yealink SIP-T48G

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
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4) Click Upload to upload the certificate.
e) If you select EAP-PEAP/GTC:
1) Enter the user name for authentication in the Identity field.
2) Enter the password for authentication in the MD5 Password field.