nexMatrix Telecom, Inc.
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855-639-6287 press 2 for support
Field Upgrade - Protel v.3 to Protel v.4
Why upgrade to version 4?
Preparation steps for field upgrade
Field Upgrade Process
Port Forwarding Requirements
Local SIP port assignments for IP phones
Changing Network settings
Finding the power switch on a Protel 2106 or 3510
Backup file installation
Modifying PBX BIOS for automatic reboot after power failure