Chapter 3 Setting Up the Cisco IP Phone
Before You Begin
If you use external microphone or speakers, be sure to use devices that meet the recommendations described in the “Using External Devices with Your Cisco IP Phone” section on page 3-8 .
To prevent users from using these external devices when the phone is using in-line power, the ports (see Figure 3-1) have a sticker plug over them. You must remove this sticker before using these external devices.
Additionally, the Cisco IP Phone 7970 has end-user configurable settings for controlling the sound output to these external devices (Settings > User Preferences > Audio Preferences). When the phone is using in-line power, the sound settings for external devices are disabled. However, if the phone is using external power, and you want to use external sound devices, be sure to help users choose the appropriate settings. Details about these settings are included in the Help available on the phone (via the ? button).
If the phone loses power, it will restart. If the external power supply is available after the restart, the external devices remain available. If the external power supply is unavailable and the phone switches to in-line power, the external devices are disabled, regardless of the current audio settings. When sufficient power is provided by the external power supply, the phone will restart again and the external devices will be available.
External Speakers
You can plug a PC-compatible powered speaker into the 3.5 mm Speaker jack on the left side of the phone. External speakers can enhance the quality of the sound that you hear from your phone.
Be sure to use speakers that meet the guidelines described in the “Using External Devices with Your Cisco IP Phone” section on page 3-8 .
To use an external speaker, you must configure the appropriate setting on the Speakers menu on the phone (choose Settings > User Preferences > Audio Preferences > Speakers). For more information, refer to the Help available on the phone via the ? button.
External Microphone
You can plug a PC-compatible microphone into the 3.5 mm Microphone jack on the left side of the phone (see Figure 3-1). This microphone jack supports stereo microphone input, and it is compatible with monophonic or single channel
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