Hi Chaz,
By default it should be admin admin, this is for the web interface though.
If on the other hand you are referring to the user/pass that is requested on the screen of the phone after you set it up as STUN, then you need to type the following:
Username: the extension number you assigned this too i.e 100
Password: the Voicemail PIN number of the extension.
Thanks I was trying to log into the phone to set up the FQdn to provision the phone remotely, Or would it be best to take it to the land to register it first
The procedure is described here in our handy guide:
https://www.3cx.com/sip-phones/grandstream-grp26-series/#h.38hbc0jjsw9n
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