Polycom SPIP 335 Directory Problems

[Spottyjarl]

I have recently bought heaps of Polycom SPIP 335 and provisioned them
How I can't figure out how to change the directory as it still has the previous owners contacts on there
Thanks in advance

 

[SweetAction]

Step 1 of buying used equipment: factory reset them. Also step 2 in the 3CX provisioning guide here: https://www.3cx.com/sip-phones/polycom-soundpoint-320-321-330-331-335/#h.t1bqrzr3bieo

How to reset: https://www.3cx.com/sip-phones/factory-reset-polycom-soundpoint/