multiple lines not working with S20 & Panasonic KX-TGP600

I have configured a S20 to work with a Panasonic KX-TGP600 and line 1 works and connects fine with the default extension 1001, but when I try to program line 2 the same way, the Yeastar S20 doesn't seem to be able to connect or vice versa. Does anyone have any ideas?

These settings are for the non-working line 2, but are the same as working line 1 (except for local SIP port being 5070 which is set auto as I assume it is because 5060 is being used by line 1?).


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