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What channel is used for voice calls, the B- or D-channel?

April 26, 2017B- channel D-channel Used Voice

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What channel is used for voice calls, the B- or D-channel?

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There are three types of voice calls that can be placed on Meridian HomeOffice II, whether it is digital voice or analog voice. They are: * The voice call made while the digital telephone set is “online” to the PBX * The voice call made while the digital telephone set is “offline” to the PBX * The voice call made via the FAX port on the HomeOffice Router. In any of these scenarios, the call is placed across one of the B-channels. The D-channel is used only for ISDN BRI B-channel call setup and tear down. Nortel Networks authorized distributor channels can contact 1-800-4 Nortel for further assistance with questions. For more information visit www.nortel.com.