Cisco 8851 User Manual - Page 28

Browse online or download pdf User Manual for IP Phone Cisco 8851. Cisco 8851 29 pages. Mpp
Also for Cisco 8851: Release Notes (24 pages), User Manual (15 pages), User Manual (16 pages), Quick Reference Manual (7 pages), Features (16 pages), Quick Start Up Manual (2 pages), Quick Reference Manual (2 pages), Quick Manual (2 pages), User Manual (24 pages), Quick Reference Manual (2 pages), User Manual (20 pages), Quick Start Manual (2 pages), User Manual (28 pages), Firmware Migration Master Manual (31 pages), User Manual (30 pages), Manual (44 pages), Manual (13 pages), Manual (14 pages), Quick Start Manual (2 pages), Installation Manual (39 pages), Manual (5 pages), Quick Start Manual (2 pages), Short Manual (2 pages), Quick Reference Manual (3 pages), User Manual (11 pages), Quick Start Manual (2 pages), Reconfiguration Manual (2 pages), Quick Start Manual (2 pages), Quick Start Manual (6 pages), Manual (22 pages), Manual (22 pages), Quick Start Manual (2 pages), Getting Started (2 pages), Manual (48 pages), User Manual (40 pages), Quick Reference Manual (7 pages), Quick Start (2 pages), Quick Reference Manual (8 pages)

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Check the connection from the handset to the router/switch, to ensure it's receiving a signal.

•

Swap out Cat 5 cables and check ports, as well as connections on all wires.

Plug the handset into a different port that you know definitely works.

•

If none of these work, call our support team.

The handset displays an "SOS Recovery Mode" message

This means the handset has become corrupted whilst updating its firmware. This could be due to a

power issue, for example, which has caused the service to pick up a bug and disconnect. It's a

common issue on Cisco devices and a fix exists at https://supportforums.cisco.com/docs/DOC-

10011.

If you can't follow this guide or encounter more problems, call our support team. They'll either offer

more advice or send out a replacement device.

The handset has an obvious defect or physical fault

If one of your handsets has been physically damaged, for example it has a broken screen or

receiver, call our support team. They'll ask for more details and send you out a replacement if the

phone is still within its warranty period.

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