The Digium 1TELD007LF is a 5v power supply which is an optional accessory for Digium IP Phones. All Digium IP Phones are PoE, but if you don't have a PoE switch, you will need the 1TELD007LF to power your Digium phone.
Like the previous 1TELD005LF power supply, the 1TELD007LF carries a range of approvals, including UL, CE and A-Tick. Additionally, the 1TELD007LF carries NOM (Mexico) certification.
Digium Power Adapter for Digium IP Phones Features and Functions: