I'm having a problem witch a SPA509G, the UC560 has a PRI card, is possible to manage 2 incoming calls on the phone, but a third one is not allow, it's like there's no more lines free.
How can I configurate the other bottons for allow more incoming calls.
You may configure three ephone-dn with the same number and assign them to three buttons on the phone.
Under the ephone-dn you should include no huntstop and you may use preference under the ephone-dn to specify from which dn the hunt should start. Only after the last one you should have huntstop and configure the forwarding to the desired number.
button 1:13 2:14 3:15
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EDIT: This can be accomplished in CLI only.