Ways To Provide Power To Your Phone; Phone Behavior During Times Of Network Congestion; Compliance Statements; Compliance Statements For The European Union - Cisco 3905 User Manual

Ways to Provide Power to Your Phone

Cisco cannot guarantee the performance of external devices, cables, and connectors.
Caution In European Union countries, use only external speakers, microphones, and headsets that are fully compliant
with the EMC Directive [89/336/EC].
Ways to Provide Power to Your Phone
You can provide power to your phone in one of two ways:
• Use the power adapter that comes with your phone.
• If your network supports Power over Ethernet (PoE), you can plug your phone into the network. Plug
If you are not sure whether your network supports PoE, check with your administrator.

Phone Behavior During Times of Network Congestion

Anything that degrades network performance can affect phone voice and video quality, and in some cases,
can cause a call to drop. Sources of network degradation can include, but are not limited to, the following
activities:
• Administrative tasks, such as an internal port scan or security scan
• Attacks that occur on your network, such as a Denial of Service attack

Compliance Statements

Compliance Statements for the European Union

CE Marking

The following CE mark is affixed to the equipment and packaging.
Cisco Unified SIP Phone 3905 User Guide for Cisco Unified Communications Manager 10.0 (SIP)
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an Ethernet cable into the Ethernet phone port
Product Safety and Security
and into the network.