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Cisco 9800 Serie Mode D'emploi page 10

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Statement 1094 Read Wall-Mounting Instructions
Before Installation
Warning
Read the wall-mounting instructions carefully before beginning installation. Failure to use the
correct hardware or to follow the correct procedures could result in a hazardous situation to
people and damage to the system.
Statement 2005 Using External Devices with Your
Cisco IP Phone
Caution
The following information applies when you use external devices with the Cisco IP Phone.
Cisco recommends the use of good quality external devices (speakers, microphones, and headsets) that are
screened against unwanted RF and AF signals.
Depending on the quality of these and their proximity to other devices such as mobile phones or two-way
radios, some audio noise may still occur. In these cases, Cisco recommends that you take one or more of the
following actions:
• Move the external device away from the source of the RF or AF signals.
• Route the external device cables away from the source of the RF or AF signals.
• Use screened cables for the external device, or use cables with a better screen and connector.
• Shorten the length of the external device cable.
• Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of the system because Cisco has no control over the quality of external
devices, cables, and connectors. The system will perform adequately when suitable devices are attached using
good quality cables and connectors.
Regulatory Compliance and Safety Information - Cisco Desk Phone 9800 Series
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Regulatory Compliance and Safety Information Cisco Desk Phone 9800 Series

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