Comdial IPrimo Speakerphone Station User Guide
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iPrimo Speakerphone Station User’s Guide October, 02 Comdial 131 APPENDIX D - SPEAKERPHONE CHARACTERISTICS When using your speakerphone, the microphone and loudspeaker are farther away from you than when you use a handset. Both the signal from the loudspeaker and the signal to the microphone must be strengthened. When microphones and loudspeakers are close together (such as in a speakerphone), additional amplification typically gen - erates a ringing sound (public address systems do this if the volume is too high or the microphone is too close to a loudspeaker). The 8900-IP speakerphone can function in a full-duplex or half- duplex mode. Full-Duplex Speakerphone Guidelines The 8900-IP speakerphone uses the latest full-duplex speakerphone technology. (Full-duplex technology enables both parties on a speak - erphone call to speak simultaneously—half-duplex speakerphones carry only one person’s voice at a time.) and will operate in either full-duplex or half-duplex mode depending on the current line condi - tions. For example, satellite calls or calls with a delay involved may prevent the telephone from operating in full-duplex mode. To operate in full-duplex mode, the telephone must perform a “speech training” test at the beginning of each call. To achieve optimum per - formance from the full-duplex speakerphone, Comdial recommends that each user in turn speak about 10 consecutive words to allow the telephone to “train” itself. Note that during the “speech training” test, the speakerphone is operating in half-duplex mode. Depending on the telephone line conditions and the type of speaker- phone at the other end, it may not be possible to operate in full-duplex mode. If the speakerphone at the other end is a half-duplex speaker - phone and both parties are in speakerphone mode, the half-duplex speakerphone is the controlling factor preventing full-duplex mode.
132 Comdial October, 02 To maximize the usefulness of your full-duplex speakerphone, take note of these following observations about full-duplex speakerphone operation. • The full duplex operating mode requires a small amount of time to adapt to changes in echo; therefore, you should avoid making any movements in the vicinity—about a one-foot radius—of the speakerphone. • There are certain echo limits beyond which the speakerphone cannot effect canceling. These limits are as follows: room echoes beyond 39 milliseconds (standard configuration) and line echoes beyond 24 milliseconds (standard configuration). • The speakerphone may automatically reduce the volume in each direction when both you and the distant party talk at the same time (double-talk). This volume reduction is necessary to control the echoes at high volume levels. It is possible for surrounding conversations and other sounds to trigger double- talk even when you are not speaking. This condition may lower the loudspeaker volume at your speakerphone. • You must adjust the loudness of your voice to match that of the distant party’s voice. This action is necessary to cause full- duplex operation to take place. Sustained double-talk or excessive echo may cause the speakerphone to drop back into half-duplex operation. This happens because the speakerphone’s echo cancel circuits cannot adapt during the double-talk situation. Note: Pressing any button (mute, hold, etc.) on the speaker- phone while in full-duplex mode causes the system to perform the “speech training” test again. For example, if you press MUTE while in full-duplex mode, when you release the call from mute, the system will perform the entire “speech train - ing” test.
iPrimo Speakerphone Station User’s Guide October, 02 Comdial 133 • If both you and the distant party are using full-duplex speakerphones, the sensitivity to both echo path changes and volume reduction during double-talk is doubled from the sensitivity when just one full-duplex speakerphone is involved. Half-Duplex Speakerphone Guidelines The speakerphone user guidelines in this section do not apply when your speakerphone is operating in full-duplex mode. However, they are applicable when operating in half-duplex mode or in “speech training” mode. • Background noise may prevent the sound-activated switches from operating properly. Avoid placing the speakerphone where it will detect sounds from typewriters, keyboards, printers, paging systems, and other equipment. • Speak slightly louder than normal and in a clear voice. For the microphone to best detect your voice, speak within three feet of it and face the telephone. • Raising the volume of the loudspeaker makes it easier for the sound-activated switches in your telephone to select the distant party’s voice. Lowering the volume of the loudspeaker makes it easier for the switches to select your voice. • Since the system takes several seconds to provide the best switching, constant sound patterns—such as elongating your words and playing externally-supplied music—may prevent the sound-activated switches from operating properly. • Place the telephone on a hard surface and away from table edges. Do not place the telephone in corners or enclosures. Do not let obstructions come between you and the microphone. Rooms with hard, flat surfaces that reflect sound may affect the sound-activated switches. • If you are using a handset and the other party is using a speakerphone, avoid breathing heavily into your microphone. Avoid other sounds that may affect the distant telephone’s sound-activated switches.
134 Comdial October, 02 In some situations, such as when either you or the distant party is in a noisy environment, you may have to lift your handset to ensure a clear conversation. When using your speakerphone, the microphone and loudspeaker are farther away from you than when you use a handset. Both the signal from the loudspeaker and the signal to the microphone must be strengthened.
iPrimo Speakerphone Station User’s Guide October, 02 Comdial 135 APPENDIX E - FEATURE NETWORKING SUPPORT The system that your IP speakerphone works into can be either a local stand-alone system or part of a system-to-system network. System-to- system networking connects several systems together in an arrangement that allows unified communications throughout the network. Depending upon the networked system to which your IP speakerphone connects (either the host system or one of the node systems) feature set capability differs. For a complete list of features and their properties see Appendix E, Feature Networking Support. Contact your installer to determine whether your system connection is to a hub or a node system. The table below identifies the features to which Comdial provides remote networking support and identifies whether each feature is for a local stand-alone system or for a system-to-system network. Feature Name Ty p e Network Originate Terminate Both Remote Network SupportFeature ParametersProgram Feature Abandoned Hold ReleaseTerminatingNoneAcross Network Account CodeBothNoneAcross NetworkNode/COS AlarmsLocalNode A-leadLocalNode Alternate AttendantTerminatingComdialLocalNode
136 Comdial October, 02 ANI (passed across the network but must be enabled per node)TerminatingComdial/ QSIGLocal (display telephones)Node ANI DNIS (passed across the network but must be enabled per node)OriginatingComdial/ QSIGLocal (display telephones)Node ANS DetectOriginatingComdialAcross Network ARSBothComdialAcross NetworkNode ASRN/ANoneLocalNode Attendant ProgramingBothComdialLocalNode Authorizati on CodeOriginatingNoneLocalNode Auto HoldTerminatingNoneAcross NetworkNode Auto PauseTerminatingNoneAcross NetworkNode Feature Name Ty p e Network Originate Terminate Both Remote Network SupportFeature ParametersProgram Feature
iPrimo Speakerphone Station User’s Guide October, 02 Comdial 137 Auto RedialOriginatingNoneAcross NetworkNode Aux LineAcross NetworkNode Aux RingLocalNode Block ProgramAcross NetworkIncoming DID Node Button, Programma bleBothComdialAcross Network (with limitations)Node/ Station Call CostingOriginatingNoneAcross Network (with limitations)Node/ Station Call DivertTerminatingComdialLocalNode/ Station Call Forward Default ForwardTerminatingComdialAcross NetworkNode/ Station Call Forward All ImmediateTerminatingComdialAcross NetworkNode/ Station Call Forward All RNATerminatingComdialAcross NetworkNode/ Station Feature Name Ty p e Network Originate Terminate Both Remote Network SupportFeature ParametersProgram Feature
138 Comdial October, 02 Call Pickup DirectedTerminatingComdialAcross NetworkNode/ Station Call Pickup GroupTerminatingNoneLocalNode/ Station Call TimeOriginatingNoneAcross NetworkNode/ Station Call TransferBothComdialAcross NetworkNode/ Station Call Waiting To n eTerminatingNoneLocalNode/ Station Camp OnTerminatingNoneLocalNode/ Station CFOSBothNoneLocalNode/ Station Clock SetLocalNode ConferenceBothComdial/ QSIGAcross Network (with limitations)Station COSLocalNode Day Night Class of ServiceBothComdialLocalNode Delay Hot LineTerminatingNoneLocalNode/ Station Feature Name Ty p e Network Originate Terminate Both Remote Network SupportFeature ParametersProgram Feature
iPrimo Speakerphone Station User’s Guide October, 02 Comdial 139 Dist RingTerminatingNoneLocalNode/ Station Dial by NameOriginatingNoneLocalNode/ Station Directed Station HoldBothNoneLocalNode/ Station Disable StationLocalNode/ Station Disconnect NotificationBothNoneAcross Network DND/ inhibit/ overrideTerminatingComdial/ QSIGLocalNode DNIS (passed across the Network but must be enabled per node)BothComdialLocal (display phones)Node DSS/BLFBothComdialAcross Network (with limitations)Node/ Station DTMF SignalingBothNoneAcross Network Feature Name Ty p e Network Originate Terminate Both Remote Network SupportFeature ParametersProgram Feature
140 Comdial October, 02 Enhanced Night ModeTerminatingNoneAcross NetworkNode Enhanced RingingTerminatingNoneAcross NetworkNode Executive OverrideBothNone Extended DTMF Feature NumberingLocalNode Group ListenTerminatingNoneAcross NetworkNode/ Station Hands FreeBothNoneAcross NetworkNode/ Station HoldTerminatingComdial/ QSIGAcross NetworkNode/ Station Hunt Group (can access Hunt group across Network but members must be local to each other)TerminatingComdialAcross NetworkNode Hunt ListTerminatingNoneLocalNode/ Station Feature Name Ty p e Network Originate Terminate Both Remote Network SupportFeature ParametersProgram Feature