Just for clarification: I tried connecting the Phone (ESI 60 ABP 10/100 IP), entered the installers password (on the phone), entered the next extension number (on the phone) ... But it says "extension was invalid". How do I to add the extension first (to the phone system )?
I am a Network/PC administrator. I need help installing a refurbished ESI 60D on a IP900. I have available licenses on my IP 900. It is a segregated network without a vlan. I tried connecting the 60D, entered the installers password, entered the next extension number... But it says "extension...
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