Cisco 7937G User Guide - Page 10
Finding Additional Information, Safety and Performance Information - power supply
UPC - 882658165283
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Finding Additional Information You can access the most current conference station documentation on the World Wide Web at this URL: http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/index.htm You can access the Cisco website at this URL: http://www.cisco.com/ You can access international Cisco websites from this URL: http://www.cisco.com/public/countries_languages.shtml Safety and Performance Information Refer to these sections for information about the impact of power outages and other devices on your conference station. Power Outage Your accessibility to emergency service through the phone is dependent on the phone being powered. If there is an interruption in the power supply, Service and Emergency Calling Service dialing will not function until power is restored. In the case of a power failure or disruption, you may need to reset or reconfigure equipment before using the Service or Emergency Calling Service dialing. Using External Devices The following information applies when you use external devices with the conference station: Cisco recommends the use of good quality external devices (such as headsets) that are shielded against unwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of these devices 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 shielded cables for the external device, or use cables with a better shield and connector. • Shorten the length of the external device cable. • Apply ferrites or other such devices on the cables for the external device. 2 OL-11559-02