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The Cisco 8851 phone without 18/36 Key Expansion Module included supports Session Initiation Protocol (SIP) for signaling, Session Description Protocol (SDP), IPv4, and IPv6. The phone is optimized for use with Cisco Unified Communications Manager. This Cisco 8851 phone is a modified version that connects to your network like any other 8851 phone. The difference is the addition of Positive Disconnect On-Hook Security. Approved for use in SCIF and SAPF environments, the phone also allows the on-hook security features to be engaged while in a call providing enhanced “Hold” and “Mute” security. Speakerphone functionality is enabled on the device and is protected with the on-hook security of the positive disconnect electronics, but can be administratively disabled in the Unified Communications Manager.
| Functionality |  |
|---|---|
| Cosmetics | |
All refurbished items are restored to full functionality, and their grades reflect only cosmetic condition. Lower-grade products may have more visible blemishes but are rigorously tested and cleaned to ensure identical performance and warranty coverage.
| Phone Type | IP Phone |
|---|---|
| Lines | 10 |
| Connection | Gigabit Ethernet |
| Display | Yes |
| SIP | Yes |
Rest assured, if you order the wrong items, don't like the model, or just don't need it anymore we accept returns with NO restocking fees. Whether you want something different or just a credit, we have you covered! This policy goes hand in hand with our company culture of delivering outstanding customer satisfaction.
If you need assistance finding a different product our awesome staff is ready to help. Contact us for expert support.
All products purchased from us are covered by a 1-year warranty from the date of purchase, covering manufacturing defects and functional failures under normal business use.
Please note that batteries are an exception to this policy. Batteries are covered by a 90-day warranty due to their consumable nature.
This warranty does not cover damage caused by misuse, unauthorized modifications, or improper handling. For any warranty claims, please contact our support team with your purchase details and a description of the issue.
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