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InterTel Userguides
Inter-Tel single line user guide
Inter-Tel 8520 user guide
Inter-Tel 8560 / 8660 user guide
Inter-Tel IP Softphone user guide
Inter-Tel 8600 / 8620 / 8622 / 8662 user guide
Xarios Phone Manager quick reference user guide
Interactive IP Handset User Guides

Model 8662
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user guide |
Inter-Tel Model 8662 and Model 8660
Models 8662 and 8660 are multiprotocol endpoints, ideal for professionals who require information about the calls they handle, as well as advanced functionality. Featuring a six-line, Liquid Crystal Display (LCD) and eight one-touch "soft keys", users can reduce the time it takes to initiate and receive calls, retrieve and manage messages, access features and set Do-Not-Disturb messages.
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Model 8622
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user guide |
Inter-Tel Model 8622 and Model 8620
These cost-effective, multiprotocol endpoints enable users to quickly handle calls and access features. The convenient, two-line LCD shows number called, Caller ID and more. Programmable buttons and the message waiting lamp help you respond to important business matters in a timely manner. This endpoint also features a second LAN port for peripheral devices such as a computer or IP printer.
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Model 8600
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user guide |
Inter-Tel Model 8600
The Model 8600 is a cost-effective, multiprotocol endpoint ideal for users who require standard functionality such as hold, transfer, DND conference and more.
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Model 8602
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user guide |
Inter-Tel Model 8602
The Model 8602 (IP softphone) is designed to run on a PC, allowing mobile and remote workers to connect to the phone system without losing key features. As a full-featured extension, the Model 8602 can be employed as a user’s primary or secondary phone.
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Inter-Tel Digital Endpoint User Guides

Model 8560
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user guide |
Inter-Tel Model 8560
This powerful phone features a six-line by 16-character, alphanumeric (LCD) with menu-driven soft keys, which act as a built in user guide to lead you through system features and capabilities.
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Model 8520
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user guide |
Inter-Tel Model 8520
The Inter-Tel Model 8620 incorporates a two-line by 16-character LCD to provide the information you need for enhanced productivity. With programmable keys, you can customize your endpoint to match your work style—maximizing your efficiency.
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Model 8500
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user guide |
Inter-Tel Model 8500
This cost-effective endpoint combines important features and ease-of use, delivering powerful functionality, flexibility and affordability.
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Model 8416
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user guide |
Inter-Tel Model 8416
Perfect for small office attendants or anyone who requires additional, programmable buttons, the Inter-Tel Model 8416 Mini-DSS expansion module connects to Inter-Tel Models 8520 and 8560 display phones, adding 16 user-programmable buttons.
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Model 8450
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user guide |
Inter-Tel Model 8451
The Inter-Tel Model 8450 is a Direct Station Select/Busy Lamp Field (DSS/BLF) expansion module that connects to Inter-Tel Models 8560 and 8520 digital display phones for one-button access to 50 additional extensions and other features or resources.
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