Cisco 7975G Administration Guide - Page 57

Chapter 3 Setting Up the Cisco Unified IP Phone Understanding the Cisco Unified IP Phone 7975G Components Audio Quality Subjective to the User Beyond the physical, mechanical and technical performance, the audio portion of a headset must sound good to the user and the party on the far end. Sound is subjective and Cisco cannot guarantee the performance of any headsets or handsets, but some of the headsets and handsets on the sites listed below have been reported to perform well on Cisco Unified IP Phones. Nevertheless, it is ultimately still the responsibility of customers to test this equipment in their environments to determine suitable performance. For information about headsets, refer to: http://www.vxicorp.com/cisco http://www.plantronics.com http://www.jabra.com Connecting a Headset To connect a headset to the Cisco Unified IP Phone, plug it into the Headset port on the back of the phone. Press the Headset button on the phone to place and answer calls using the headset. You can use the headset with all of the features on the Cisco Unified IP Phone, including the Volume and Mute buttons. Use these buttons to adjust the ear piece volume and to mute the speech path from the headset microphone. Disabling a Headset You can disable the headset by using Cisco Unified Communications Manager Administration. If you do so, you also will disable the speakerphone. To disable the headset from Cisco Unified Communications Manager Administration, choose Device > Phone and locate the phone that you want to modify. In the Phone Configuration window for the phone, check the Disable Speakerphone and Headset check box. Using External Devices with Your Cisco Unified IP Phone The following information applies when you use external devices with the Cisco Unified IP Phone: Cisco recommends the use of good quality external devices that are shielded (screened) 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. 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. OL-14640-01 Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 6.1 3-5