Using different Extension Number & AUTH User ?

DOLMark

New Member
Feb 26, 2026
1
0
0
57
Hi All

(New to FusionPBX, so please forgive silly questions which I've not found answers to in docs yet :-)

I need to configure a system so that an extension number is not the same as the SIP User Auth. (Migrating over legacy SIP system and trying hard not to reconfigure everything). So ideally I'm after something like:

Extensions
User: 11
SIP Auth: ABC-XYZ-11
Pass: somepassword

So that the SIP account registers with the ABC-XYZ-11 credentials but rings when someone dials extension 11.

Is this doable in the standard extension config? I've seen mention of extension having an auth user but not sure if thats bad AI, old docs or people confused, as I cant find it :)

One possibility I was looking at creating the extensions as ABC-XYZ-11, with local CLI as 11. Then adding a dialplan / destination to catch 11 and send it to ABC-XYZ-11. Will that work?

Can this be done? If so what's the best way to do this?

Thanks
Mark