Multiple extensions can be configured simultaneously. When the list of extensions for configuration include both analogue and SIP extensions, only those fields that are not unique to any individual extension can be configured:
When only SIP extensions are included in the list, only those fields not unique to any of the SIP extensions can be configured. This includes the SIP codec configuration.
Note that, since multiple extensions may have different values for shared fields, these fields default to disabled during a multiple-edit, i.e. the form is not a reflection of the underlying configuration when first opened.
Simply accepting this form will set all the extensions’ values to disabled. Canceling the form will leave all extensions’ configurations unchanged. Enabling one of the fields will enable the field for all of the extension being edited.