With this config and no vlan ‘pushed’ back to the switch from ISE the phone will be put in the auth vlan 160.
As the vlan 260 on the switch is tagged on all ports and voice is set, your phone will probably use lldp-med to find the voice vlan and use a tagged vlan, if no MAC auth is active on the port.
You need to setup the ISE server (or use ClearPass 🙊) to answer in the radius request with a tagged vlan 260.
Good luck