Mitel MIVOICE OFFICE 250, Руководство по установке и администрированию

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Phones
515
• Use any angle your 8500-series phone supports as the angle makes very little difference to
levels and performance even though the microphone is “hidden” when vertical.
• Avoid using the speakerphone as a “conference room” speakerphone. Conference room speak -
erphones, such as a Polycom
®
, typically have as many as three to five microphones that stretch
10 feet or more end-to-end to pick up the voices of all people in the room. A phone has just one
microphone and works best when you and or other parties are within four feet of the phone. If
you are in a conference room where there are multiple parties farther than four feet from the
phone, it is best to use a stand-alone speakerphone designed specifically for that purpose.
• Avoid using the standard mode when the far-end party is in a “noisy” environment — typical with
cell phone callers.
• Avoid using the standard mode when the call is a conference call with multiple parties because
the likelihood of one or more of the parties having background noise is high.
• Standard speakerphone operation is half-duplex or “switched” and switches to the “loudest”
party. Half-duplex means that if both parties talk at the same time, only one party—the loudest
one—will be heard.
• The far-end talk “level” is based on your speaker volume setting (1–8). The louder you set the
volume, the more difficult it becomes to interrupt the far-end party.
• As a general rule, the far-end talk level is “louder” than the near-end talk level giving the far-end
party priority when talking.
• The farther away you are from the phone, the lower the talk level.
• The speakerphone adjusts to ambient “noise” level in the room, which is why you need to keep
the phone away from noise generators such as PC fans and talk within four feet of your
speakerphone.
Keep in mind the following guidelines when using the enhanced mode:
• Follow the same guidelines as those listed for the “standard” speakerphone, and, in addition to
the guidelines for an enhanced speakerphone.
• Inform the far-end party about the burst of white noise before you enter the enhanced mode.
• Use volume levels 1–3 for full-duplex operation.
• Avoid using the enhanced mode on calls with significant delay.
• Avoid using the enhanced mode on volume levels 4–8 since the speakerphone transitions back
to half-duplex operation.
• The enhanced speakerphone provides full-duplex operation at lower volume settings (1–3) but
transitions to half-duplex operation at higher volume settings (4–8). Full-duplex means both
parties can talk at the same time and hear each other.
• The enhanced mode does
not
perform acoustic echo cancellation, so the far-end party will
always hear their own acoustic echo.
• The far-end party will hear all near-end background noises.
• The far-end party must be on a handset for full-duplex operation.